Answer:
Friction, tension, air resistance requires physical contact .
Compare the following sodium atoms in terms of their neutrons and mass numbers 24Na, 23Na
Na-24 and Na-23 have the same number of atoms=11, different neutrons(13 and 12),different mass number(24 and 23)
Further explanationThe elements in nature have several types of isotopes
Isotopes have the same number of protons and having a different number of neutrons.
So Isotopes are elements that have the same Atomic Number (Proton)
₁₁²³Nanumber of atoms = 11
mass number = 23
number of neutrons=23-11=12
₁₁²⁴Nanumber of atoms = 11
mass number = 24
number of neutrons=24-11=13
How do sports drinks differ from energy drinks
Answer:
it depends on the drink
Explanation:
it can depends on the nutritional facts, ingredients used, the time the drink was made and so on and really change the effects still depending on the drink
Sports drinks are flavored beverages often containing carbohydrates, minerals and electrolytes (salts), and sometimes vitamins or other nutrients. On the other hand, energy drinks typically contain stimulants such as caffeine and guarana with varying amounts of sugar protein, vitamins, sodium and other minerals.
Why does reactivity increase going down a group on the periodic table?
Answer:
All group 1 metals have one electron in its outer shell. As we go down the group, the atom gets bigger... Therefore, the attraction between the nucleus and the last electron gets weaker. This makes it easier for the atom to give up the electron which increases its reactivity.
Explanation:
Reactant A illustrates an example of which of the following?
Answer: molecules of an element
The diagram shown in the A section shows molecules of an element because they all look the same, and they are in circular shape.
- Best of Luck!
iron-58 how many protons electrons and neutrons ?
Other than a base and a sugar unit, which of the following is a component of a nucleotide?
A. sulfate group
B. nitrate group
C. phosphate group
D. carbonate group
Answer:
C. phosphate group
Explanation:
took quiz on edg
Answer:
C
Explanation:
EDGE 2022
HURRY PLEASE HELP!
12. Carbon-14 has a half-life of 5,770 years. A 25 gram sample of Carbon-14 was found. The original sample mass was hypothesized to have a mass of 100 grams. How old was the sample based on this hypothesis?
A. 2885
B. 11,540
C. 17,310
D. 23,080
True or false In the periodic table, the atomic number is found above the chemical symbol.
Answer:
In the periodic table, the atomic number is found above the chemical symbolb is true.
) A tank contains helium gas at 490 mmHg, nitrogen gas at 0.75 atm, and neon at 520 torr. What is the total pressure in atm?
A) 2.1 atm
B) 0.55 atm
C) 1.0 × 103 atm
D) 1.5 atm
If an object has a fast velocity, the dots on a ticker tape diagram will be _____. very long far apart very short close together
Answer:
I think it would be close together.
Explanation:
Which change absorbs heat?
O A. Using a laptop computer
O B. Condensing steam
O C. Firing a rifle
O D. Frying an egg
Answer:
Using a Laptop computer
Answer:
Frying an egg I do believe becuase it has to absorb the heat in order to cook.
Explanation:
27. Lithium carbonate and calcium nitrate solutions are mixed. write the complete and NET ionic equations.
Answer:
..........................
(Giving brainliest if u help mee)
What makes a charged object attract an uncharged object?
A) The charge in both objects move around.
B) The charged object is positively charged.
C) The charges move in the uncharged object.
D) The uncharged object becomes negatively charged.
Answer:
I think C)
Explanation:
The reason for this is due to the phenomenon called "Charging by Induction". What that means is that when something with a charge, for example a negative charge, is brought near an uncharged one, it induces the opposite charge onto it (positive in this case) and therefore since opposites attract, it attracts it.
The reason for this is that since, just like a positive magnet rejects and pushed away like charges, the electrons hold a negative charge, they push away any electrons that may be in the neutrally charged item causing only protons to be left, thus creating an oppositely charged object. Or vice versa.
So whatever charge the object has, it induces the opposite charge into the uncharged object, causing the charges to move only in the uncharged one.
A charged object is able to attract an uncharged object because: C. The charges move in the uncharged object.
In Science, like charges attract each other and unlike charges repel one another in accordance with the law of electrostatic forces. Also, the direction of the flow of current (electrons) is typically from anode (positive side) to the cathode (negative side) in an electrical circuit.
As a result of electric induction, opposite charges are produced on the edge of an uncharged object when a charged object is brought near the uncharged object.
Hence, a charged object is able to attract an uncharged object because the charges induced by the charged object move in the uncharged object.
Find more information on electrostatic force here: https://brainly.com/question/18214726
All elements on the periodic table are neutral because they have the same
number of electrons as what other particle?
A. Neutrons
B. Photons
C. Atomic mass
D. Protons
The answer is D.
I hope this helps! :)
Question 1 (1 point)
What is NOT part of a seismograph?
3
Base
Sonar Pulse
Pendulum
O Recording Instruments
Answer:
Sonar Pulse
Explanation:
A seismometer is a device that captures the surface trembling of the Earth brought on by seismic waves. Sonar Pulse is not part of a seismograph.
What is seismograph ?A seismometer is a device that detects vibrations in the ground brought on by explosions, volcanic eruptions, and earthquakes. A seismograph is typically made up of these together with a timing device and a recording device.
A seismometer is a device that captures the surface trembling of the Earth brought on by seismic waves. The combined seismometer and recording equipment is referred to as a seismograph in most cases.
Geologists utilize a seismometer, sometimes known as a seismograph, to measure and capture seismic waves. Scientists can map the interior of the planet by looking at these records, and they can also quantify or pinpoint earthquakes and other ground tremors.
Thus, option B is correct.
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True or false : Electrons only move when heated.
Answer:
False
Explanation:
Answer:
False
Electrons are constantly moving, but with heat they move a bit faster
I think, I mean Electrons are always moving sooo
Which equation is balanced using the correct formulas and coefficients?
A. NaCl2 + F2 → NaF2 + Cl2
B. 2 NaCl + F2 → NaF + Cl2
C. 2 NaCl + F2 → 2 NaF + Cl2
D. O NaCl + F → NaF + CI
Answer:
answer is gonna be B
Explanation:
NaCl+F2= NaF+Cl2
In what form is carbon found in the atmosphere?
Answer:
In the atmosphere carbon is found as carbon dioxide
Explanation:
What is the chemical structure of coal?
What is the molecular weight of coal?
1) As for its chemical composition, coal is a mixture of high-molecular-weight polycyclic aromatic compounds, such as benzene C6H6, toluene C6H5CH3, xylene C6H4(CH3)2, naphthalene C10H8, anthracene C14H10, pyrene C16H10 and their derivatives with high mass fraction of carbon, as well as of water and volatile substances.
2) The coal asphaltenes have a relatively narrow MWD (full width ≈ 150 amu) with an average molecular weight of ≈340 amu. The petroleum asphaltenes display a broader MWD (full width ≈ 300 amu) and are heavier on average (≈680 amu).
~ I hope this helped, and I would appreciate Brainliest. ♡ ~ ( I request this to all the lengthy answers I give ! )
Which item is made from a basic ingredient?
Soap
Tea
Wine
Vinegar
2
Answer:
vinegar is your answer
Explanation:
i took the test
Question 1 of 1
Which is an example of science?
O studying the universe, including motions, positions, and interactions of celestial objects
O exploring crystals to experience healing or other special powers
O events about people on Earth based on the positions of celestial objects in the universe
O analyzing handwriting gives information about a person's character
An example of science is studying the universe, including motions, positions, and interactions of celestial objects. option A is correct.
What is science?It is a phenomenon to understand the physical world with unbiased observations and systematic experimentation. to understand universe and motion and position physics is there and for interaction of celestial objects chemistry and biology.
The different fields of science are physics chemistry and biology. in physics, the study of motion and position is to be done with the help of different concepts given by science.
In biology, the study of every living thing from bacteria to the whale is to be done with the help of different theories and many more.
In chemistry, the study of all the chemical reactions that are happening in the university is to be done by experimenting with new things and observing the universe.
Therefore, option A is correct.
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The temperature of a 500. mL sample of gas increases from 150. K to 350. K. What is the final volume of the sample of gas,
if the pressure in the container is kept constant?
A) 210. mL
B) 1170 mL
C) 0.0095 mL
D) 0.0470 mL
Select the correct answer
A substance is followed by the symbol
in a chemical equation. What does the symbol represent?
OA. The substance has the least molecules in the equation.
OB.
The substance is in the liquid state.
OC. The substance is produced last in the reaction.
OD
The substance is dissolved in a liquid solution.
O E
The substance is lost at the end of the reaction.
M
Answer:
B. The substance is in the liquid state.
Explanation:
The symbol (l) in a chemical equation tells us that the substance it follows is in the liquid state.
There are some more symbols that tell us what state the substance is in:
(s) - the substance is in the solid state(g) - the substance is in the gas state (aq) - the substance is dissolved in waterThe Molar Mass (g/mol) of an ideal gas whose density is 2.5g/L at 1.8 atm and 30,0 Celsius ?
35 g/mol
64 g/mol
44 g/mol
38 g/mol
Answer:
M = 35 g/mol
Explanation:
Given data:
Density = 2.5 g/L
Pressure = 1.8 atm
Temperature = 30°C (273.15 +30 = 303.15 K)
Molar mass = ?
Solution:
d = PM/RT
M = dRT/P
M = 2.5 g/L × 0.0821 atm.L/mol.K × 303.15 K / 1.8 atm
M = 62.22 atm. g/mol/ 1.8 atm
M = 35 g/mol
Draw the electron dot formula for carbon dioxide, CO2. How many nonbonding electron pairs are in a carbon dioxide molecule
Answer:
O=C=O.
Four nonbonding electron pairs.
Explanation:
Hello!
In this case, as you can see on the attached picture, there are two double bonds between the central carbon atom and those two oxygen atoms because each oxygen shares two electrons to the central carbon for them to attain the octet. Moreover, the enclosed dots represent the nonbonding electron pairs, which are four in total. It is importante to notice that carbon dioxide (O=C=O) has a complete octet whereas carbon monoxide (C=O) does has an incomplete octet for C.
Best regards!
One carbon dioxide molecule consists of ______________ carbon atoms and ____________ oxygen atoms
Answer:
1 carbon 2 oxygen
Explanation:
Hurry PLEASE HELP!
12. Carbon-14 has a half-life of 5,770 years. A 25 gram sample of Carbon-14 was found. The original sample mass was hypothesized to have a mass of 100 grams. How old was the sample based on this hypothesis?
A. 2885
B. 11,540
C. 17,310
D. 23,080
B. 11,540
Further explanationThe atomic nucleus can experience decay into 2 particles or more due to the instability of its atomic nucleus.
Usually radioactive elements have an unstable atomic nucleus.
General formulas used in decay:
[tex]\large{\boxed{\bold{N_t=N_0(\dfrac{1}{2})^{t/t\frac{1}{2} }}}[/tex]
T = duration of decay
t 1/2 = half-life
N₀ = the number of initial radioactive atoms
Nt = the number of radioactive atoms left after decaying during T time
Nt=25 g
No=100 g
t1/2=5770 years
[tex]\tt 25=100\dfrac{1}{2}^{T/5770}\\\\\dfrac{1}{4}=\dfrac{1}{2}^{T/5770}\\\\2=T/5770\rightarrowT=11540~years[/tex]
In the metallurgic industry one of the processes to get pure iron takes tree steps.
a) CaCO3→CaO + CO2
b) CO2 + C → CO
c) Fe2O3 + CO → Fe + CO2
Calculate the kilograms of iron that would be produced from 1340 g of calcium carbonate
Iron produced : 1.5 kg
Further explanationReaction
a) CaCO3→CaO + CO2
b) CO2 + C → 2CO
c) Fe2O3 + 3CO → 2Fe + 3CO2
mol CaCO₃ (MW=100,0869 g/mol) :
[tex]\tt \dfrac{1340}{100,0869}=13.39[/tex]
mol CO₂ = mol CaCO₃ =13.39(reaction a)
mol CO = 2 x mol CO₂ = 26.78(reaction b)
mol CO(reaction c) = 1.5 mol CO from reaction b = 1.5 x 26.78 = 40.17
mol Fe(reaction c) = 2/3 x mol CO =
[tex]\tt \dfrac{2}{3}\times 40.17=26.78[/tex]
Or we can cancel out the same compound in different sides from the sum of the three reactions to find mol Fe
a) CaCO3→CaO + CO2
b) CO2 + C → 2CO
c) Fe2O3 + 3CO → 2Fe + 3CO2
----------------------------------------------+
CaCO3 + Fe2O3 + C + CO + 3CO2 ⇒ CaO + 2Fe
mol Fe = 2 x mol CaCO3 = 2 x 13.39 = 26.78
mass Fe :
[tex]\tt 26.78\times 55.845~g/mol=1495.53~g\approx 1.5~kg[/tex]
Order the structures from smallest to largest. Chloroplast Leaf Glucose molecule Cell Water molecule
Answer:
water molecule...glucose..chloroplast...cell...leaf
The structure of the order from smallest to the largest should be shown below:
The order of the series are as follows:
Water moleculeGlucoseChoroplastCellLeafLearn more: https://brainly.com/question/26115859?referrer=searchResults
As the temperature of a gas increases the pressure it exerts on its container also increases
