Please help me with 17 & 18!!
Thankss in advance!! :) ​

Answer:

it expands

Explanation:

this is because when it get warmer it runs out of room and makes it got up the tube.

Answer: How is climate change affecting the ocean? 

Is it climate change, global warming, or global climate crisis?

Step 1: Write the chemical equation:

2Cu + AgNO₃ → Cu(NO₃)₂ + Ag

Step 2: Calculate the moles of Cu:

n(Cu) = mass/Ar

n(Cu) = 52 / 63.546

n(Cu)= 0.818 mol

Step 3: Find the mole ratio between Cu an Ag and figure out the moles of Ag

   Cu : Ag

    2   :   1

0.818 : 0.818 / 2

0.818 : 0.409

Thus, n(Ag) = 0.409 mol

Step 4: Find the mass of Ag:

Mass of Ag = moles × Ar.

Mass = 0.409 × 107.8682

Mass = 44.11g

Answer:

pH is a measure of hydrogen ion concentration, a measure of the acidity or alkalinity of a solution. The pH scale usually ranges from 0 to 14. Aqueous solutions at 25°C with a pH less than 7 are acidic, while those with a pH greater than 7 are basic or alkaline. A pH level of 7.0 at 25°C is defined as "neutral" because the concentration of H3O+ equals the concentration of OH− in pure water. On the other hand, electrical conductivity is a non-specific measurement of the concentration of both positively and negatively charged ions within a sample. So the short answer to the question is as follows, the presence of any hydrogen ions present in a substance will impact the pH level and most probably influence conductivity levels. However, hydrogen ions make up only a small part of the ion concentration measured by a conductivity meter.

This problem is providing the equilibrium reaction whereby SO3 is produced and asks for the value of the equilibrium constant. After the calculations, the answer turns out to be 0.124.

In chemistry, when a chemical reaction attempts to go to completion, it might experience a limitation known as equilibrium; a condition where it is not able to proceed any further.

In such a way, for the given reaction:

[tex]2SO_2(g)+O_2(g)\rightleftharpoons 2SO_3(g)[/tex]

We can write the equilibrium expression as:

[tex]K=\frac{p_{SO_3}^2}{p_{SO_2}^2p_{O_2}}[/tex]

Hence, given the total pressure at equilibrium, we can add the pressures of all the species at equilibrium including the reaction extent, x:

[tex]P_{eq}=p_{SO_3}+p_{SO_2}+p_{O_2}\\\\3.80=(2x)+(2.98-2x)+(1.18-x)[/tex]

Thus, we solve for x to obtain:

[tex]3.80-2.98-1.18=2x-2x-x\\\\-0.36=-x\\\\x=0.36bar[/tex]

Hence, we plug it in into the equilibrium expression to obtain the equilibrium constant as follows:

[tex]K=\frac{(2x)^2}{(2.98-2x)^2(1.18-x)}\\\\K=\frac{(2*0.36)^2}{(2.98-2*0.36)^2(1.18-0.36)}\\\\K=0.124[/tex]

Learn more about chemical equilibrium: https://brainly.com/question/26453983

Answer:

yes, because water is reacting with air and heat and creating a boiling effect.

Explanation: kracken doge

Answer: Freezing and boiling are considered to be examples of chemical reactions. This depends on their conception of substance. If students regard ice as a different substance from liquid water they are likely to classify the melting of ice as a chemical change.

Explanation:

Boiling water, boiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O). No, boiling water is NOT a chemical reaction, but it is a physical change.

Answer:

Breaking down of food substances without oxygen

Explanation:

The release of energy by breaking down food substances in the absence of oxygen

Answer:

Double-stranded DNA consists of two polynucleotide chains whose nitrogenous bases are connected by hydrogen bonds. Within this arrangement, each strand mirrors the other as a result of the anti-parallel orientation of the sugar-phosphate backbones, as well as the complementary nature of the A-T and C-G base pairing.

Explanation:

Answer:

I think it's thermal energy. c:

Answer

Thermal energy transfers occur in three ways: conduction, convection, and radiation. Conduction is when thermal energy is transferred between molecules in contact with one another.

Thermal is the answer.

Answer:

the answer is c

Explanation:

Answer:

Explanation:

Crustal deformation builds landforms when two tectonic plates start to push into each other they can rise up and build mountains, or when they sink under, they create valleys.

Tectonic pressure in a crust can cause folding. Folding can end up with  the formation of valleys and mountains so we can conclude that when two tectonic plates start to push into each other they can rise up and build mountains, or when they sink under, they create deep valleys.

Learn more about plates here: https://brainly.com/question/16939139

Answer:

i think it is c. At the boiling point

Explanation:

hope this helps

Answer:

PROOF ITS MELTING POINT

Explanation:

Answer:

1 grams H2SO4 is equal to 0.010195916576195 mole.

Explanation:

Answer:

Mercaptan is the additive that is added to natural gas to make it easier to detect in case of a leak. The most important thing to know about mercaptan is that it stinks. Some people compare it to the smell of rotten eggs.

Explanation:

Answer:

The main source of energy is the sun. The sun has a big part in the water cycle because it turns the water into water vapor. This cause the water cycle to start over again once it rains. Therefore, making the sun ne of the biggest parts in the water cycle.

In a chemical reaction, reactant which is present in the lesser amount gets consumed after sometime and after that no further reaction takes place whatever be the amount of the other reactant present.

Explanation:

A limiting reagent is the reactant that gets consumed early in a chemical reaction

During a chemical reaction the reactant that gets consumed early in the reaction limits the quantity of product which will be produced in the chemical reaction. therefore the reactant that gets consumed early in a chemical reaction is a limiting reagent.

Hence we can conlcude that A limiting reagent is the reactan that gets consumed early in a chemical reaction.

Learn more about limiting reagent : https://brainly.com/question/14225536

#SPJ5

Answer:

1. Find the number of moles of solute dissolved in solution,

2. Find the volume of solution in liters, and.

3. Divide moles solute by liters solution.

Hope this helps you solve the problem.

Answer:

3

Explanation:

motion means movement, none of the others show movement

Answer:

a mother going to market

Explanation:

going is a motion

Answer:

Compound

Explanation:

This is because it made up of two elements that's is hydrogen and oxygen in the ratio of 2:1 respectively

Answer:

Compound

Explanation:

H2O isn't on the periodic table so it's not an element. H2O isn't a molecule because it's water. H2O isn't a mixture because it can't be seperated. So, it must be a copound.

Answer:

0.010204583427424 per 1 gram.

0.01 moles Phosphoric Acid ⇒ 1.0000000000000153 gram(1 gram of acid)

I hope this answers your question! Have a great day.

Answer:

Diamonds are very important in our daily lives ,so therefore it has many uses

1.They are used ad beauty products

2.They are used in automative industry

3.They are used in making windows

4.They are used as medicine

Answer:

Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products.

Answer:

Chemical reactions that absorb (or use) energy overall are called endothermic. In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products.

Answer:

B) ethanol

Explanation:

that is the answer I got it in my test

Answer:

When the cart gets to down-hill drop, for a moment it is at rest, until gravity (a force) acts upon the cart and causes it to accelerate downward.

Explanation:

Newton's second law says that when a constant force acts on a massive body, it causes it to accelerate, i.e., to change its velocity, at a constant rate. In the simplest case, a force applied to an object at rest causes it to accelerate in the direction of the force.

Answer: 0.5 grams of acetic acid

Explanation:

Just find 5 percent of 10 grams

5/100x10=0.5