A 4,000 mL solution of AgNO3 contains 17.00 g of solute in water. Calculate the molar concentration of the solution.

Answers

Answer 1

Answer: The molarity is moles/liters.

First, convert 4,000 mL to L:

4000 mL --> 4 L

Now, you must convert the 17 g of solute to moles by dividing the number of grams by the molar mass. The molar mass of AgNO3 is 169.87 g/mol:

17 / 169.87 = .1

Now that you have both the number of moles and the liters, plug them into the initial equation of moles/liters:

.1/4 = .025

Answer 2

Answer: The answer is 0.03 M

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What is the pressure (in atmospheres) of the sample of gas trapped in the closed-tube mercury manometer shown below if h = 23.6 cm?

Answers

Given:

Height of the mercury manometer, h = 23.6 cm

To determine:

The pressure of gas trapped in the closed-tube mercury manometer

Explanation:

In the case of a closed tube mercury manometer, the pressure of the gas is equal to the height difference of the mercury levels in the two arms of the manometer.

i.e. P(gas) = P(h)

in this case, h = 23.6 cm = 236 mm

i.e. Pgas = 236 mmHg

Since, 1 atm = 760 mmHg

The corresponding Pgas(atm) = 236 mmHg * 1 atm/760 mmHg = 0.311 atm

Ans: The pressure of the gas is 0.311 atm

Final answer:

The pressure of the gas in the closed-tube mercury manometer is approximately 0.31 atmospheres, calculated by converting the height of the mercury column into atmospheres.

Explanation:

The pressure of a gas in a closed-tube mercury manometer can be determined using the known height of the mercury and the concept of hydrostatic pressure. Firstly, it's important to note that the pressure on either side of the mercury column in the tube is equal. The pressure of the gas is the same as the hydrostatic pressure due to a column of mercury of the given height in the tube.

In the reference solution provided, the height is given as 26.4 cm. However, according to the question, the height is provided as 23.6 cm. Assuming the height is indeed 23.6 cm, we need to convert this to a pressure value. It is known that 1 atm at sea level is equivalent to a column of mercury that is about 760 mm high.

Therefore, we can convert the height of 23.6 cm or 236 mm into atmospheres. To do this, divide 236 mm by 760 mm to find the pressure in atmospheres. Therefore, the pressure of the gas in the manometer is approximately 0.31 atmospheres.

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Why do we not know yet if we live in multiverse

Answers

The people of he world believe and they don't believe.

I,myself, think we do land don't live in multiverse.

Why: Because in science I hear that there are many universes out there that need to b explored.

Not: Because if we did, don't you think that Astronauts and the U.S. would try and find different universes.

I hope I helped you!:)

This occurs when the cells in a multicellular organism have specific jobs

Answers

Cell division. Hope this helps :)

Cell division would be it :)

What causes a gas to exert pressure when confined in a container

Answers

the molecules in gas are always trying to expand

Final answer:

When a gas is confined in a container, it exerts pressure due to the collision of its particles with the walls of the container. This is explained by the kinetic theory of gases, which states that gas particles are in constant random motion. Temperature also plays a role in gas pressure.

Explanation:

For example, if you squeeze a balloon, the gas inside it gets compressed, and the particles collide with the surface of the balloon more frequently, resulting in an increase in pressure.

Another factor that influences gas pressure is the temperature. According to Charles's Law, when the temperature of a gas increases, its particles move faster, leading to more frequent and energetic collisions with the container walls, thereby increasing the pressure.

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Which substance cannot be broken down by a chemical change?(1) ammonia (2) mercury (3) propane (4) water

Answers

The substance that cannot be broken down by chemical change is $\boxed{\left( 2 \right){\text{ mercury}}}$ .

Further Explanation:

Substance is the pure form of matter while a combination of atoms or molecules is termed as mixture.

Types of substances:

1. Element

The simplest form of substance that cannot be further decomposed by any chemical means is called an element. Carbon, sulfur, and cobalt are some of the examples of elements.

2. Compound

When two or more different elements are held together by chemical methods, compounds are formed. These can further be decomposed into their corresponding constituents. The properties of compounds are very different from those of their constituent elements. NaCl, ${\text{C}}{{\text{H}}_{\text{4}}}$ and ${{\text{H}}_{\text{2}}}{\text{O}}$ are examples of compounds.

(1) Ammonia is composed of one nitrogen and three hydrogen atoms so it is a compound. Therefore it can be broken down by chemical change.

(2) Mercury is an element so it is the simplest form in which it can exist. Therefore it cannot be broken down by chemical change.

(3) Propane is composed of three carbon and eight hydrogen atoms so it a compound. Therefore it can be broken down by chemical change.

(4) Water is composed of one oxygen and two hydrogen atoms so it is a compound. Therefore it can be broken down by chemical change.

Learn more:

Which sample is a pure substance? brainly.com/question/2227438
Which must be a mixture of substances? brainly.com/question/637791

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Elements, compounds, and mixtures

Keywords: substance, mercury, propane, water, ammonia, element, compound, chemical change, decomposed, simplest form, NaCl, CH4, carbon, sulfur, cobalt.

The substance which cannot be broken down by a chemical change is mercury as it is an element, hence option 2 is correct.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

Thus, option 2 which is mercury is correct as it is an element.

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Which statement best describes the conductivity of weak electrolytes, such as weak acids and bases?A) Weak electrolytes do not dissolve in water and can not conduct electricity.
B) Weak electrolytes dissolve and partially dissociate in water providing charged ions to conduct electricity.
C) Weak electrolytes dissolve and completely dissociate in water providing charged ions to conduct electricity.
D) Weak electrolytes dissolve and does not dissociate in water providing no charged ions to conduct electricity.

Answers

Answer: B) Weak electrolytes dissolve and partially dissociate in water providing charged ions to conduct electricity.

Explanation: Weak electrolytes are those substances which do not dissociate completely when dissolved in water. They dissociate but then associate back and thus their dissociation is shown by an equilibrium sign. Example: $CH_3COOH$

$CH_3COOH\rightarrow CH_3COO^-+H^+$

The charged species formed helps in the conduction of electricity.

Strong electrolytes are those substances which dissociate completely when dissolved in water. Their dissociation is shown by a forward arrow. Example: $NaOH$

$NaOH\rightarrow Na^++OH^-$

The charged species formed helps in the conduction of electricity.

B. Weak electrolytes are weak because they only partially dissociate into ions in water.

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