Sodium and lithium have similar chemical properties. What characteristic of these elements explains why they are chemically similar?.

Answers

Answer 1

Sodium metal (Na) has properties with lithium metal (Li) because the two metals are located in the same group, namely group IA.

What are the physical and chemical properties of group IA?

All elements in group IA are included in the alkali metals, except hydrogen, because the character possessed by hydrogen is "different" and does not match the character of other alkali metals.

Physically properties, all alkali metals are shiny white (silver), except for cesium which is golden yellow. The texture of this metal tends to be soft. If we try to burn this metal, the resulting flame will be different, namely lithium (red), sodium (yellow), potassium (purple), rubidium (red), and cesium (blue).Chemical properties, alkali metals are the most reactive metal group. That is, the more reactive a metal is, the easier it is to lose electrons. In addition, if we order from top to bottom on the periodic table, the electronegativity, ionization energy, melting point, and boiling point properties will be smaller.

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Related Questions

Which play borders the philippine plate

Answers

The plates which borders the great philippine plate are the:

The Pacific platesThe Sunda platesThe Eurasia plates

How are the Pacific, Sunda and Eurasia plates borders the philippine plate.

It follows that all the plates which have the sea Philippines plates bordered have one thing in common. They are all defined by means of convergent boundaries. In order words, the Pacific, Sunda and Eurasia plates border the philippine plate are produced by different plates which are converging towards each other in several directions.

In conclusion, we can now know that one of the major plates which borders the sea philippines plate is the Pacific plates.

Complete question:

Which plates borders the philippine plate?

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the molar concentration of a sugar solution in an open beaker has been determined to be 0.5m. calculate the solute potential at 26 degrees celsius.

Answers

The solute potential at 26 degrees Celsius of the molar concentration of a sugar solution in an open beaker has been determined to be 0.5m is -12.4 bar.

Solute potential can be calculated by using:

Ψ = -iCRT

As we know,

i = 1

C = 0.5 (mol/L).,

R = 0.0831 L·bars/mol·K

T = 299K

Ψ = - 0.5*0.0831*299 = - 12.4 bar

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which of the following best summarizes the composition of hydrocarbon molecules in this outcrop of tar sand? choose one: a. small, simple hydrocarbon molecules b. moderate-length chain hydrocarbon molecules c. large, complex chain hydrocarbon molecules

Answers

The Correct answer is A) small, simple hydrocarbon molecules the following best summarizes the composition of hydrocarbon molecules in this outcrop of tar sand.

Crude oil, natural gas, and coal all contain hydrocarbons, which are organic molecules made of hydrogen and carbon. Humans have modified them to be utilized as an energy source, such as in the production of gasoline and jet fuel.

The simplest organic molecules, hydrocarbons are composed exclusively of hydrogen and carbon atoms.

Fuel is the most significant application of hydrocarbons. Among the most widely used hydrocarbon fuels include gasoline, natural gas, fuel oil, diesel, jet fuel, coal, kerosene, and propane. Plastics and synthetic fabrics like polyester are made using hydrocarbons as well.

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PLEASE ANSWER FAST
In an ionic bond between 2 sodium atoms and an oxygen atom, what resulting charge would each atom have?

Answers

Answer:

Explanation:

Ionic bonds form between two or more atoms by the transfer of one or more electrons between atoms. Electron transfer produces negative ions called anions and positive ions called cations. These ions attract each other.

Explanation: An ionic bond is formed because sodium is a part of the Alkali metals and Oxygen is a non-metal and a gas. 4Na + O2 → 2Na2O (s) OR Na + O2 → NaO2 (s).

Answer:

Explanation:

Ionic bonds form between two or more atoms by the transfer of one or more electrons between atoms. Electron transfer produces negative ions called anions and positive ions called cations. These ions attract each other.

What is the frequency of a wave whose wavelength is 5.67 x 10^-7

Answers

Answer is 20.34





Explanation:

saline solutions are often administered intravenously to patients. if a saline solution is 0.450% sodium chloride by mass, what is the molarity of na in the saline solution? assume the saline solution has a density of 1.005 g/ml.

Answers

The the the molarity of na in the saline solution of nacl in the saline solution was 0.077 M.

Molar concentration is a measure of the concentration of a chemical species, especially of a solute in a solution, in terms of the amount of substance according to the unit quantity of the solution. In chemistry, the most normally used unit for molarity is the variety of moles according to liter, having the unit symbol mol/L or mol/dm³ in the SI unit.

Calculation:-

0.45% NaCl by mass

Density = 1.005 g/ml

0.45g NaCl in a total mass of 100 g

100 g in ml = 100/1.005 mL

                  = 99.50 ml

0.450 g NaCl in moles = 0.450 /M nacl

                                     = 0.450/58.44

                                     = 7.70 × 10⁻³ mol

Molarity of NaCl = 7.70 × 10⁻³ /99.50 × 100

                           = 0.077 M

Molarity (M) is the quantity of a substance in a sure volume of answer. Molarity is defined because the moles of a solute according to liters of a solution. Molarity is also called the molar awareness of a solution.

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Why would a thermometer be considered a speedometer for atoms? Explain with at least 2 sentences.

Answers

Apply to a gas molecule's kinetic energy is not the same as telling you the speed, so calling a thermometer a speedometer for atoms is deceptive.

Why would a thermometer be considered a speedometer for atoms?

Uniformly, if a sample of water is put down in the freezer, its molecules begin to move slower (with a lower speed) and this is thought the back by a lower thermometer reading. It is in this feeling that a thermometer can be thought of as a speedometer. As John Rennie broaches in the comments, thermometers work for solids, liquids, and gasses, whereas the temperature is comparable to the average. A thermometer would be an average speedometer for the primary molecules of a substance or structure, not specifically separate atoms.

So we can conclude that thermometers compute the average velocity of atoms in a given material or order volume.

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reactions that generate products enriched in one enantiomer are said to be . multiple choice question.

Answers

Enantioselective are reactions that generate products that are enriched in one enantiomer.

What are enantiomers?

Enantiomers are pairs of molecules that exist in two forms that are mirror images of each other but are not superimposable. The enantiomers are chemically identical in all other respects. Enantiomeric pairs are distinguished by the direction in which they rotate polarized light when dissolved in solution, either dextrorotatory (d or +) or levorotatory (l or -). Hence the term optical isomer.

The enantioselectivity of a chromatography system is defined as the preferential interaction of one enantiomer with a chiral selector. It is usually determined as the ratio of the retention factors of the two enantiomers in a chiral chromatography or electrophoresis system.

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:

A. What is Newton's First Law of Motion?
B. Do objects move by themselves? Why or why not?

Answers

Answer:

A:

Newton's First Law of Motion is the law of inertia. It states that an object at rest will remain at rest, and an object in motion will remain in motion, unless acted upon by an unbalanced force.

B:

No, objects do not move by themselves. They require a force to move them.

Explanation:

Which of the following elements is the LEAST reactive?

Fluorine, Rubidium, Cesium, and Gold

Answers

answer : Gold


explanation:

Gold is the most non-reactive of all metals and is benign in all natural and industrial environments. Gold never reacts with oxygen (one of the most active elements), which means it will not rust or tarnish. Yet this is precisely what Russian commercial precious metal trading company, International Reserve Payment System, discovered on thousands of (allegedly) 999 gold coins "St George" issued by the Central Russian Bank (reference).

Answer:

The least reactive metals would be Platinum, Gold, Palladium, Osmium and Silver and in the decreasing order.

Of the following elements: Fluorine, Rubidium, Cesium, and Gold  is the LEAST reactive:

Gold


How many moles are equal to 4.0 x 10^25 atoms of tungsten

Answers

Explanation:

the answer was already on here

a nucleoside triphosphate containing a 5 carbon deoxyribose sugar and the nitrogenous base thymine would be called:

Answers

A nucleoside triphosphate containing a 5-carbon deoxyribose sugar and the nitrogenous base thymine would be called a thymidine monophosphate.

Nucleotides are comprised of three components: a nitrogenous base, a pentose sugar, and one or more phosphate groups. Each of these elements is referred to as an "n" (nucleotide), so when we combine them all together, we get nucleotides like dATP and dTTP.

Thymidine is the name of the parent nucleotide from which derivative nucleotides are made. Thymidine monophosphate contains thymine and a phosphate group, which makes it different from other nucleotides. In this case, it has one phosphate group attached to its 5-carbon deoxyribose sugar, which is also called deoxyribonucleic acid (DNA).

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the ability of sim agar to test for hydrogen sulfide production is based on the addition of which of the following substrates? the ability of sim agar to test for hydrogen sulfide production is based on the addition of which of the following substrates? ferrous sulfate sodium thiosulfate peptone peptones, sodium thiosulfate, and ferrous sulfate submit request answer part b hydrogen sulfide gas has a characteristic odor that is similar to what smell? hydrogen sulfide gas has a characteristic odor that is similar to what smell? rotten eggs garden soil body odor baking bread

Answers

The ability of sim agar to test for hydrogen sulfide production is based on the addition of which of the following substrates - Peptones, Sodium Thiosulphate, Ferrous Sulfate.

What is Sim agar ?

An example of a multi-test medium is SIM (sulfide, indole, motility) media, which examines multiple aspects of the bacterium's metabolism simultaneously. In this instance, motility, indole synthesis, and hydrogen sulfide generation.

Motility, indole, and sulfur. This media is differential. It examines an organism's capacity to reduce sulfur, make indole, and move through the agar (be motile). SIM is frequently used to distinguish between Enterobacteriaceae species.

Pancreatic digest of casein, peptic digest of animal tissue, ferrous ammonium sulfate Fe(NH4)2(SO4), sodium thiosulfate Na2S2O3, agar (3.5 g/L), and distilled water are all ingredients in SIM Medium.

The colorless gas hydrogen sulfide (H2S) has a pungent smell of rotting eggs. The eyes and respiratory system may get irritated after being exposed to hydrogen sulfide.

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an aqueous solution contains 0.331 m hydrocyanic acid. how many ml of 0.268 m potassium hydroxide would have to be added to 150 ml of this solution in order to prepare a buffer with a ph of 9.230?

Answers

564.930995917 ml of potassium hydroxide would have to be added .

What is pH ?

The pH of a food is a direct function of the free hydrogen ions present in that food. Acids in food release free hydrogen ions. Hydrogen ions give acidic foods their characteristic sour taste. Therefore, pH can be defined as a measure of free acid. More specifically, pH is defined as the negative logarithm of hydrogen ion concentration. The pH range is 0 to 14. The pH of pure water is exactly 7, so pH 7 is neutral. Values ​​less than 7 are acidic. Values ​​above 7 are basic or basic.

Foods are generally classified as “acidic foods” (low pH, pH 4.6 or less) or “weakly acidic foods” (high pH, ​​pH 4.6 or higher). Safe food storage is determined by the pH of the food. Acidic foods such as fruit and pickles can be safely canned in a tin can with a hot water bath. A combination of acid and hot water (212°F) destroys perishable organisms such as mold and yeast. Proper cooking water canning processes are important to prevent the growth of acid-tolerant molds and yeasts that can lead to elevated pH levels. The pH of borderline foods such as figs and tomatoes can easily exceed 4.6, so lemon juice or citric acid should be added before canning with boiling water. Low-acid foods such as vegetables and meat should be processed in a pressure preserver for safety.

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3. using the 1h nmr spectrum shown below. a) confirm the identity of the compound using the nmr provided. is this consistent with acetophenone (starting material) or the benzoic acid (product)? b) using the table below list the 4 signals shown. include chemical shift in ppm, multiplicity and number of protons. for calculating the number of protons, use the integration curves provided in the nmr and a ruler. c) support your answer in a) using the data obtained from the nmr. explain using the peak(s), or absence of peak(s), that sustain the identity of the compound.

Answers

Since 2 2.60 PPM singlet was seen for the /C-CH, Proton, and IHNMR data clearly showed the presence of acetophenone. IHNMR chemical with a multiplicity of 2.60 PPM is singlet, and there are 3 photons in total.

IHNMR chemical with a multiplicity of multiple number of photons of 7.49 to 7.45 PPM and a Proton number of 1. acetophenone number of photons in an IHNMR chemical with a multiplicity of 7.60 - 7.55PPM is multilaterally 2. IHNMR Chemical of multiplicity 7:98 - 7.94 PPM is multiplet no. of Proton is 2. So, Acetophenone chemical will be administered. Only one at proton comparatively shielded opposition and miter will give multiple in the benzene ring according to the IHNMR value of one singlet observed at 2–6 1 PPM. OxfordCryosystems.

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4. How is a straight average different from a weighted average?

Answers

When calculating the straight average or arithmetic average, all numbers are treated equally and are weighted equally. Weighted averaging, however, assigns a weight that predetermines the relative importance of each data point. Weighted averages are most often calculated to even out the frequency of values ​​in a data set.

What are straight average and weighted average ?

The straight average is calculated by adding the earned totals and dividing by the possible totals using points or percentages for the current grading period assignment. The weighted average assigns an importance (or weight) to each number. Weighted averages are more useful than regular averages because they provide more nuance. Less important data are given less weight, so more important data have more impact on results

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When a chlorine atom reacts weith a sodium atom to form an ion, the chlorine atom will
Select one:

a.
gain one electron

b.
gain two electons

c.
lose two electrons

d.
lose one electon

Answers

Answer:

a) gain one electron

Explanation:

When the chlorine atom reacts with the sodium atom, it creates NaCl. Sodium would be your cation and chlorine would be your anion. A sodium atom (Na) has a 1+ charge while the chlorine atom (Cl) has a 1- charge. As a result, sodium would lose a valence electron causing chlorine to gain a electron.

A university class has 12 students enrolled, 2 of whom are graduate students.
What is the probability that a randomly chosen student will be a graduate
student?
Write your answer as a fraction or whole number.
P(graduate student)
=

Answers

Answer:

Answer 1/6

Explanation:

what is the voilume of a solution that would result by diluting 50.0 mlof 0.101 m naoh to a ocfncentration of 0.0505m

Answers

The volume of the solution that would result by diluting 0.1M solution to 0.05M is 100ml.

The molarity of the substance is defined as the number of moles of solute per unit volume of solution in liters.

Hence, if we can write,

Molarity = moles/volume

Moles = molarity x volume

Moles are always constant, so,

initial molarity x initial volume = final molarity x final volume

The initial volume is 50ml and initial molarity is 0.1M, after diluting, the final molarity is 0.05M.

Putting values,

50 x 0.1 = Volume of NaOH after dilution x 0.05

Volume of NaOH after dilution = 100 ml.

So, the volume of the resulting solution after dilution is 100ml.

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Sodium can combine with element "X" so that
the chemical formula is Na₂X. What element
could element "X" be?

A)Phosphorus
B)Helium
C)Magnesium
D)Sulfur

Answers

Sodium can combine with element "X" so that the chemical formula is Na₂X. element "X" be Sulphur and compound is Na₂S - sodium sulfide.

Ionic bond involves the attraction in positive charge , cation and negative charged anion . The charge of amount of atoms balance to become a neutral compound. Sodium is a metal and have tendency to donate electron and become Na⁺ and Sulphur is a non metal and have tendency to accept electron and form S²⁻. The both combine and for a ionic compound. the 2 negative charge of sulfur atom may be neutralize by 2 Na⁺ atom.

2Na⁺   +   S²⁻   ------>    Na₂S

Thus, Sodium can combine with element "X" so that the chemical formula is Na₂X. element "X" be Sulphur and compound is Na₂S - sodium sulfide.

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calculate the pH of 10 g dm-3 HCL​

Answers

The pH of 10 g dm -3 HCL​ is 3. The pH scale determines how acidic or basic water is. The range is 0 to 14, with 7 representing neutrality.

What is pH ?

Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. In reality, pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water.

Hydrogen potentials are what PH stands for. It speaks of how many hydrogen ions are present in a solution. This serves as a gauge for the acidity or alkalinity of a solution. On a pH scale, the pH value ranges from 0 to 14.

A solution's pH is a significant indicator of its chemical composition. The pH may affect how readily available nutrients are, how biological processes work, how bacteria behave, and how chemicals behave.

[ H⁺ ] = 10 − 3 M,

pH = − log [ 10 − 3 ],

pH = 3.

Thus, The pH of 10 g dm -3 HCL​ is 3.

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Can buffer happen with a strong acid and a salt?
The question: 0.2 HCl and 0.2 NaCl

Answers

A buffer can not be made from  a strong acid and a salt.

What is a buffer?

We know that the term buffer has to do with the type of solution that we use to prevent any kind of change in the acidity or the alkalinity of a solution. In order words, the buffer is the type of solution that is used to prevent a change in the pH of the system.

Unfortunately, there can not be a buffer that is made from a strong acid and a strong base. Rather we can only have a buffer that is made from a weak acid and its salt  or a buffer that is made from a weak base and its salt.

Since HCl is  a strong acid and NaCl is a salt of  strong acid, it then follows that the combination of HCl and NaCl can never be used as a buffer.

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Outline an alternative method and name equipment you could use to collect gas and work out the
volume produced in a more accurate way.

Answers

The alternative method to collect the gas and measure the volume is by a gas syringe.

What is a gas syringe?

Gas syringe is an equipment used to pump or withdraw gas from a closed container and can measure the volume of the gas produced in any chemical reaction.

The volume of the gas produced can be measured by reading the measuring scale on the gas syringe when the plunger moves in a gas syringe.

Hence, gas syringe is an alternative method to collect and measure the volume of the gas in a chemical reaction.

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the standard gibbs free energy of formation of is zero. (a) h2o(l) (b) k(s) (c) cl2(g) the standard gibbs free energy of formation of is zero. (a) (b) (c) (a) only (b) only (c) only (b) and (c) (a), (b), and (c)

Answers

The standard Gibbs free energy of formation of is zero are option (b) K(s) and (c) Cl₂(g).

Gibbs free energy may be more than zero, much less than zero, and identical to zero. If Gibbs free energy is more than zero the response is a nonspontaneous reaction. If Gibbs free energy is less than zero the reaction is a spontaneous reaction.

The usual Gibbs free energy of formation of a compound is the exchange of Gibbs unfastened energy that accompanies the formation of 1 mole of that substance from its issue elements, of their well known states.

Gibbs free energy, G is a price that defines how spontaneous a response is, with a poor fee which means the reaction is spontaneous, and a advantageous cost that means the reaction is nonspontaneous. This fee is the combination of enthalpy and entropy.

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30.00 ml of a h2so4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 44.45 ml of a 0.1489 m naoh solution. what is the concentration of the h2so4 solution?

Answers

The concentration of the H2SO4 solution should be 0.1101 M.

Calculation of the concentration:

Since

Volume of H2SO4 = 30.00 mL = 0.030 L

Volume of NaOH= 44.45 mL = 0.04445 L

Concentration of NaOH= 0.1489 M

Now

The balanced equation is

H2SO4 + 2NaOH → Na2SO4 + 2H2O

Now the concentration of the H2SO4 solution is

b*Ca*Va = a*Cb*Vb

here,  b = the coefficient of NaOH = 2

Ca = ?

Va = the volume of H2SO4= 30.0 mL = 0.030 L

a = the coefficient of H2SO4 = 1

Cb = the concentration of NaOH = 0.1489 M

Vb = the volume of NaOH = 44.45 mL = 0.04445 L

Now

2*Ca*0.030 = 1* 0.1489* 0.04445

0.060 * Ca = 0.00661

Ca = 0.1101 M

Hence, The concentration of the H2SO4 solution is 0.1101 M.

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In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 135.0 °C and constant total pressure. Then, she measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of her measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. AH = -107. kJ AS = -194 J K X $ ? AG = kJ C(s) + 2C1, (g) - CC1,(g) Which is spontaneous? this reaction the reverse reaction neither AH = 951. kJ | as=0 AG = 37. kJ Al 0,(s) + 3H2(g) + 2Al(s) + 3H20 (8) Which is spontaneous? this reaction the reverse reaction neither

Answers

To understand the connection between free energy and the equilibrium constant. The sign of a chemical reaction's standard free energy change G° determines whether the reaction will tend to proceed forward or backward. Similarly, the relative signs of G° and S° determine whether or not temperature affects the spontaneity of a chemical reaction, and if so, how much.

How do you determine enthalpy and entropy?

G is only relevant for changes where the temperature and pressure remain constant. Most laboratory reactions are performed under these conditions; the system is usually open to the atmosphere (constant pressure), and the process begins and ends at room temperature (after any heat we have added or which is liberated by the reaction has dissipated.)

The Gibbs function is crucial because it is the single master variable that determines whether a given chemical change is thermodynamically possible.

Thus, if the free energy of the reactants is greater than the free energy of the products, the entropy of the world will increase when the reaction occurs as written, and the reaction will tend to occur spontaneously. In contrast, if the free energy of the products exceeds that of the reactants, the reaction will tend to proceed in the opposite direction rather than the one specified.

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an insulated rigid tank contains 5 kg of air at 15 oc and 100 kpa. an electric resistance heater inside the tank is now turned on and kept on until the air temperature rises to 40 oc. determine the entropy change of the air during this process.

Answers

Answer is Δs=0.3kJ/K

Since, the tank is insulated rigid tank, The process is constant volume process,

Air as perfect gas

Obtain the properties from the table. Consider th state 1. P=100kPa, T, = 15°C

s=6.830kJ/kg-K

v=0.827 m³/kg

Constant volume process,

Consider the state 2. T = 40°C, v, v = 0.827 m²/kg

5,6.890 kJ/kg-K

Calculate the change in entropy,

Δs=m(s, -s) =5(6.890-6.830)

Δs=0.3kJ/K

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The addition of 3. 15 g of ba(oh)2*8H2O to a solution of 1. 52 g of NH4SCN in 100 g of water in a calorimeter caused the temperature to fall by 3. 1 C. Assuming the specific heat of the solution and products is 4. 20 J/g C, calculate the approximate amount of heat absorbed by the reaction, which can be represented by the following equation:

Answers

A solution of 1.52 g of NH4SCN in 100 g of water in a calorimeter decreased in temperature by 3.1 °C when 3.15 g of Ba(OH)28H2O was added. Calculate the approximate amount of heat absorbed by the reaction using the following equation, assuming the specific heat of the solution and products is 4.20 J/g °C:

Ba(OH)2 + 8H2O + 2NH4SCN = 10H2O + Ba(SCN)2(aq), 2NH3(aq), and (l)

What is Absorbed ?

A material in one state is transferred into another substance in a different state through the process of absorption in chemistry (e.g., gases being absorbed by a liquid or liquids being absorbed by a solid).

The process of absorption is how the blood takes in the byproducts of digestion so that it can supply the rest of the body. The mucous membrane allows for the passage of the digested materials into the blood or lymph during absorption. The following mechanisms allow for absorption. basic diffusion

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three samples of an ideal gas, all at the same temperature, occupy identical containers with the same volume. assume that the mass of the particle is proportional to its size. which of the gas samples has the greatest pressure?

Answers

The three samples of an ideal gas, all at the same temperature, occupy identical containers with the same volume. the particle mass is proportional to the  size of particles.  the gas samples has the greatest pressure is in which has greater no. of moles.

The equation for an  ideal gas given as :

P V = n RT

where,

P = pressure

V = volumes in L

T = temperature at K

n = moles

R = 0.082 L atm / mol K = gas constant

since volume and temperature are constant , then :

P = n

therefore greater the number of moles , greater will be the pressure.

Thus, The three samples of an ideal gas, all at the same temperature, occupy identical containers with the same volume. the mass of the particle is proportional to its size.  the gas samples has the greatest pressure is in which has greater no. of moles.

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Write the formulas of the following binary molecular compounds:
9) nitrogen monoxide
10) diphosphorous pentaoxide
11) chlorine dioxide
12) dinitrogen tetroxide

Answers

Nitrogen monoxide - NO
Diphosphorous pentaoxide - O10P4
Chlorine Dioxide - CIO2
Dinitrogen Tetroxide - N2O3
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you have just received a new hdd so you connect it to your computer. the disk manager software recognizes the disk but when you try to format it, you see an error indicating the disk manager software cannot find location of the tracks and sectors. what is the most likely problem? Please can anyone help meI need a informative-presentational text about smoking and its consequences in human life (200-290 words)Please help me I will give brainliest advocates say that fixed exchange rates can help a country deal with economic crises. true or false lightsey natural dying corporation measures its activity in terms of skeins of yarn dyed. last month, the budgeted level of activity was 14,800 skeins and the actual level of activity was 15,100 skeins. the company's owner budgets for dye costs, a variable cost, at $0.51 per skein. the actual dye cost last month was $8,660. in the company's flexible budget performance report for last month, what would have been the spending variance for dye costs? Explain how carbon capture and international agreements may help to reduce the rate of climate change. (4 marks) the 2s and 2p sublevels are very close in energy, as are the 3s and 3p sublevels. explain how the orbital diagram for sodium confirms that the 3s sublevel is lower in energy than the 3p sublevel what are the functions of the macula densa? check all that apply. synthesize and store contract when stimulated by stretch detect changes in the sodium chloride concentration within the signaling granular cells to release renin the nurse who works on the night shift enters the medication room and finds a coworker with a tourniquet wrapped around the upper arm. the coworker is about to insert a needle, attached to a syringe containing a clear liquid, into the antecubital area. which is the most appropriate action by the nurse? Question 1 of 10Carbon, hydrogen, and oxygen can combine to form monomers called fattyacids. Which type of macromolecule contains many fatty acids?A. LipidB. Nucleic acidC. ProteinD. CarbohydrateSUBMIT Find the values of x and y. The sequence below shows a certain company's expected net worth in millions of dollars after 1, 2, 3, 4 years, etc....8.3, 10.4, 12.5, 14.6,...Which function models the nth term of this sequence? Responsesf(n) = 8.3 + 2.1nf(n) = 8.3 + 2.1nf(n) = 8.3 2.1nf(n) = 8.3 2.1nf(n) = 8.3 + 2.1(n+1)f(n) = 8.3 + 2.1(n+1)f(n) = 8.3 + 2.1(n1) Which expression is equal to 6(r2 3) + 2(r2 + 1)?8r squared - 206r squared -28r squared -166r squared +2r-16pls, help 20 points! Which angles are congruent to Sohan rolled a number cube 90 times. The outcome of ""6"" occurred 18 times. What is the experimental probability of rolling a 6? 7. what is nash equilibrium of this price-setting game? a. grocery store 1: low price grocery store 2: lowprice b. grocery store 1: low price grocery store 2: highprice c. grocery store 1: high price grocery store 2: lowprice d. grocery store 1: high price grocery store 2: highprice Maya bought a new packof trading cards. The cardsoriginally cost $5.00. She had acoupon for 20% off. How muchdid Maya have to pay for thetrading cards after the coupon? A car travels 45 km at a speed of 60 km/h. How long does it take the carto reach its destination? Which of the following people would be most likely to use glittering generalities? a. politicians c. radio personalities b. sports personalities d. teachers Please select the best answer from the choices provided A B C D what happens to the price of a good or service when there is excess demand? a the price stays the same b the price goes up c the government sets the price d the price goes down A salesman earns 9% commissions on all the merchandise that he sells.last month he sold $3000 worth of merchandise.how much commissions in dollars did he earn last month