why do we see only one side of the moon from earth?

Answer:

(B)

Explanation:

Silver chloride is a simple ionic compound consisting of the silver cation (Ag+) and chloride anion (Cl-).

Answer: It is an unsaturated solution

Explanation: This is because it has more solute than a normal solution.

Answer:

A

Explanation:

First, let's find the molar mass of CO₂. This is 12 + 2(16) = 44 g/mole.

Now we can write 100g * (1 mole / 44g) = 2.27 mol, or A. Hope this helps!

Answer: B. Motor oil that is in the refrigerator

Explanation:

Viscosity can be defined as the resistance provided by the fluid against its movement or flow. It restricts the resistance to change in shape or movement of fluid.  The water has high viscosity as the water molecules do not restrict movement on the surface.

According to the given problem, motor oil has lowest viscosity because it may contain heavy hydrocarbons, which may restrict its flow also when kept in refrigerator, the bonds between hydrocarbons get compact hence, viscosity decreases.

Answer:

Option C, .Liquid mercury at room temperature

Explanation:

The viscosity of liquid mercury at room temperature is 1.526 cP. While the visocsity of lemonade at room temperature ranges between 15.10 to 17.44 cP. Viscosity of Motor oil kept in the refrigerator is equal to 1328.0 cP. And Viscosity of Pancake syrup at room temperature  is 5,000 cp. Hence, out of all the four liquids, mercury has the lowest viscosity

Hence, option C is correct

Answer:

C. equal to, elements, products

Explanation:

I took a quiz and it said this was right

Answer:

B

Explanation:

Answer:

Mass will be equal to 874.56 gram

Explanation:

Molar mass of sulfur = 32 u

Molar mass of Florine = 19 u

Therefore molar mass of [tex]SF_2[/tex] [tex]=32+2\times 19=70u[/tex]

So mass of [tex]6.023\times 10^{23}[/tex] particle is 70 gram

Therefore mass of 1 particle

[tex]=\frac{70}{6.023\times 10^{23}}=11.62\times 10^{-23}g[/tex]

Therefore mass of [tex]7.525\times 10^{24}[/tex] particle is

[tex]7.525\times 10^{24}\times 11.62\times 10^{-23}=874.56gram[/tex]

Answer:

539.76 moles of O₂

Explanation:

Equation of reaction:

4Al + 3O₂ → 2Al₂O₃

From the equation of reaction above, 4 moles of Al will react with 3 moles of O₂

We can use mole-concept to find the number of moles of O₂.

4 moles of Al = 3moles of O₂

719.68 moles of Al = x moles of O₂

X = (3 × 719.68) / 4

X = 2159.04 / 4

X = 539.76 moles

539.76 moles of O₂ will react with 719.68 moles of Al

Answer:

[tex]n_{O_2}=959.57molO_2[/tex]

Explanation:

Hello,

In this case, given the reaction:

[tex]4Al (s) + 3O_2(g) \rightarrow 2Al_2O_3(s)[/tex]

Since aluminum and oxygen are in a 4:3 molar ratio, we compute the moles of oxygen that completely react as shown below:

[tex]n_{O_2}=719.68molAl*\frac{3molO_2}{4molAl} \\\\n_{O_2}=959.57molO_2[/tex]

Best regards.

Answer:

C.

Explanation:

Because it decreases from October trough december

Answer:

The density is 6

Explanation:

p = m × v

p = 3 × 2

p = 6

Hope this helped! :)

The density of the substance depends on the mass and the volume of the substance or object. It is given by the ratio of mass and volume. The density of 3 gm solid is 1.5 g/cm³.

In chemistry and physics, density is a quantitative measurement that tells about the tightness of the substance packed in an area. It relates to two parameters that include mass and volume.

The density can be said to have a proportion of mass to the volume of the substance. The mass can be in grams or kilograms, while volume can be in a liter, cubic meter, and cubic centimeter.

Given,

Mass of solid (M) = 3 gm

The volume of solid (V) = 2 cm³

Density (ρ) is calculated as:

ρ = M ÷ V

= 3 ÷ 2

= 1.5 gm/cm³

Therefore, 1.5 gm/cm³ is the density of 3 gm solid.

Learn more about density here:

https://brainly.com/question/19642139

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Answer:

13 carbon and 24 hydrogen

Explanation:

There are 24 hydrogen atoms.

There are 13 carbon atoms.

Answer:

C, A, A, B, B

Explanation:

Question 5: C. continental drift

Question 6: A. new rock forms

Question 7: A. happens at deep-ocean trenches

Question 8: B. convection currents in the mantle

Question 9: B. convergent boundary

Answer:

a) Increasing the toll for non carpoolers will motivate people to carpool and therefore will decrease the number of cars in the road burning fossil fuels.

b) Tax breaks for buildings that use solar panels for energy. This reduces fossil fuels burned for electricity.

c) The city can increase the amount of city transportation available. While this may seem counterproductive because the amount of buses or trains or boats burning fossil fuels increases, by doing this more people will have easy access to public transportation and it has been shown that public transportation is more effective in reducing fossil fuel usage per head. Providing more options of public transportation will increase their usage and therefore will over decrease the amount of fossil fuel burned by individiuals which will overall decrease fossil fuels burning.

Answer:

254.7 g

Explanation:

Hg(ONC)2 -----------> Hg + N2 + 2CO

In every problem of stoichiometry, we must commence with writing the balanced reaction equation as a guide to our calculation. Once we have written the reaction equation, we can now proceed with the solution.

Amount of CO produced= mass of CO produced/ molar mass of CO

Molar mass of CO = 28 gmol-1

Mass of CO produced= 50.2g

Amount of CO produced= 50.2g/28gmol-1

Amount of CO produced= 1.79 moles of CO

From the reaction equation:

1 mole of Hg(ONC)2 produced 2 moles of CO

x moles of Hg(ONC)2 will produce 1.79 moles of CO

x= 1.79 × 1 / 2

x= 0.895 moles of Hg(ONC)2

Molar mass of Hg(ONC)2 = 284.624 g/mol

Mass of Hg(ONC)2 = number of moles × molar mass = 0.895 moles × 284.624 g/mol

Mass of Hg(ONC)2 = 254.7 g

Answer:t

Explanation:bc

Answer:

C

Explanation:

4× CH2 = C4H8

Answer:

6Fe^2+(aq) -------> 6Fe^3+(aq) + 6e

Explanation:

The balanced oxidation half equation is;

6Fe^2+(aq) -------> 6Fe^3+(aq) + 6e

A redox reaction is actually an acronym for oxidation-reducation reaction. Since the both reactions are complementary, there can't be oxidation without reduction and there can't be reduction without oxidation.

The main characteristic of redox reactions is that electrons are transferred in the process. The number of electrons transferred is usually deduced from the balanced reaction equation. For this reaction, the balanced overall reaction equation is;

Cr2O7^2–(aq) + 6Fe^2+(aq) +14H^+(aq)→ 2Cr^3+(aq) + 6Fe^3+ (aq) + 7H2O(l)

It is clear from the equation above that six electrons were transferred. Thus six Fe^2+ ions lost one electron each in the oxidation half equation as shown in the balanced oxidation half equation above.

Answer:

It is illegal

Explanation:

Fracking involves drilling deep into the earth crust in which a water mixture with high pressure is directed at the rock with the purpose of releasing the gas inside. This process is common in the exploration of natural gas and other hydrocarbons.

It is however illegal because the water are mostly contaminated due to the hydrocarbons present and harmful to life. It is advisable and the best to remove the water and recycle them in treatment plants

Answer:

True.

Explanation:

The higher the 'Mol Concentration', the stronger the acid or base the substance is. For example...

1 Mol of HCl is less concentrated than 6 Mol HCl.

This is the same with bases:

1 Mol of NaOH is less concentrated than 6 Mol NaOH.

Answer:

Nvr XD

Explanation:

Answer:

the world may never know

Explanation:

Answer:

$13.8

Explanation:

Answer:

For a 100 watt bulb it would be around 700.8 USD, (648.53 Euros).

Explanation:

Since you did not specify the wattage of the bulb, this would be it. You could manipulate the wattage, and then do the same to the cost. E.G, a 50 watt bulb would be about 350.4 USD.

Answer:

I think they both need heat.

Explanation:

Answer:

Single Displacement reaction  

In a displacement reaction, a more reactive element replaces a less reactive element from a compound.

Change in colour takes place with no precipitate forms.

Metals react with the salt solution of another metal.

Examples:

2KI + Cl2 → 2KCl + I2

CuSO4 + Zn → ZnSO4 + Cu

Double displacement reaction

In a double displacement reaction, two atoms or a group of atoms switch places to form new compounds.

Precipitate is formed.

Salt solutions of two different metals react with each other.

Examples:  

Na2SO4 + BaCl2 → BaSO4 + 2NaCl

2KBr + BaCl2 → 2KCl + BaBr2

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Answer: mercury

Explanation: I looked up the answer to your question.

Answer:

Mercury

Explanation:

I did this question and I got it right.

Answer:

it's a, acid and base

Explanation:

a neutralization reaction occurs between strong acids and strong bases and result in the formation of a salt and water

Answer:

[tex]T1=166.66K[/tex]

Explanation:

According to Gay-Lussac’s law simply states that the ratio of the initial pressure and temperature is equal to the ratio of the final pressure and temperature for a gas of a fixed provided that the mass is kept at a constant volume.

Given:

Initial pressure, P1 = 1 atm

Final pressure, P2 = 1.5 atm

Final temperature, T2 = 250 K

The law can be applied using the below formula

P1T2 = P2T1

Then,

T1 = (P1T2)/P1 = (1*250)/(1.5) = 166.66 Kelvin.

[tex]T1=166.66K[/tex]

:

Answer:

[tex]T_1=166.7K[/tex]

Explanation:

Hello,

In this case, by applying the Gay-Lussac's law which help us to understand the pressure-temperature gas behavior via a directly proportional relationship:

[tex]\frac{P_1}{T_1} =\frac{P_2}{T_2}[/tex]

In such a way, as we are asked to compute the initial temperature knowing the initial pressure and final both temperature and pressure, so we solve for it:

[tex]T_1=\frac{T_2P_1}{P_2}=\frac{250K*1atm}{1.5atm} \\\\T_1=166.7K[/tex]

Best regards.

Answer:

3,3-dimethyl hexane

Explanation:

                        CH3

         I     I     I     I     I    I

      - C - C - C - C - C - C-

         I     I     I     I     I    I

                        CH3

Answer:

Explanation:

Stoichiometry is based on the conservation of mass.

Answer:

Explanation:

Radiation from the sun heats the ground, then the ground heats the air by process of conduction. When that happens air temp. and density start to change causing air convection currents. Hope I help.