A pure solvent has a freezing point _________ the freezing point of a solution.a. equal to
b. lower than
c. higher than

Answers

Answer 1

Answer: The correct answer is B. A pure solvent has a freezing point lower than the freezing point of a solution. This can be explained by one of the colligative property of a solution called the freezing point depression. A colligative property is a property of a solution which is affected when a solute is being added. This includes, boiling point elevation, vapor pressure lowering and osmotic pressure.

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Consider the following unbalanced redox reaction:MnO4- (aq) + SbH3 (aq) ---> MnO2 (s) + Sb (s) What is the oxidizing agent in the reaction? A.) MnO4- B.) SbH3 C.) MnO2 D.) Sb Help please?
The solid form of a substance is usually more dense than its liquid and gaseous forms. Similarly the liquid form is usually more dense than the gaseous form. Which of these breaks this general density rule?A. ice floating in a glass of waterB. vapor rising from a hot cup of teaC. cooled magma sinking in a lava flowD. a hot air balloon falling as the gas inside cools

What is the number of pairs of electrons that are shared between the nitrogen atoms in a molecule of N2?(1) 1(2) 2(3) 3(4) 6

Answers

The answer is (3) 3. The sharing of electrons is important to help elements get 8 electrons in the outer shell to be stable. To achieve this aim, the nitrogen needs to share three pairs of electrons.

The number of pairs of electrons that are shared between nitrogen atoms in a molecule of ${{\text{N}}_{\text{2}}}$ is $\boxed{\left( 3 \right){\text{ 3}}}$ .

Further explanation:

Covalent Bond

It is a type of chemical bond where electrons are mutually shared between the bonded atoms. This bond is also known as a molecular bond. The compounds formed as a result of this bonding are covalent compounds.

Octet Rule

It is a thumb rule that describes the tendency of elements to bond with other elements in order to acquire eight valence electrons. As a result, elements tend to achieve stable noble gas configuration.

The atomic number of nitrogen is 7 and it has an electronic configuration of $1{s^2}2{s^2}2{p^3}$ . Nitrogen has five valence electrons in it and is three electrons short of the stable noble gas configuration of neon. So it can share three electrons with another nitrogen atom to complete its octet. As a result, three covalent bonds are formed between two nitrogen atoms. In other words, nitrogen atoms have a triple bond between them in molecule (For structure, refer to the attached image).

Learn more:

Identification of ionic bonding: brainly.com/question/1603987
Chemical bonds in NaCl: brainly.com/question/5008811

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords:covalent bonds, triple bond, nitrogen, 7, five, three, octet rule, covalent compound, molecular bond, electrons.

Describe how chemistry is a part of your morning routine?

Answers

Explanation:

There are many examples of chemistry in daily life showing how important chemistry is. For example digestion is based on chemical reaction. In our morning routine we brush our teeth by paste that is a chemical, the soap or shampoo we use is also a chemical. The process of making food is also chemistry that involve chemical reaction.

brushing your teeth uses a chemical to dissolve bacteria, the milk you drink or eat with your cereal is treated with a series of chemical reactions in order for it to sit in tour frindge

Which of the following environmental risks is most likely to lead to digestive health issues?a. meat contamination
b. air pollution
c. fertilizer use
d. none of the above

Answers

Meat contamination because humans do not eat air or fertilizer so meat contamination is the only logical answer.

meat contamination is following environmental risks that is most likely to lead to digestive health issues.
- - Answer: A

Which iron pot has the least thermal energy?A. A5 kg pot at 130°C
B. A 2 kg pot at 120°C
C. A 5kg pot at 25°C
D. A 2 kg pot at 25°C

Answers

Final answer:

The 2 kg pot at 25°C has the least thermal energy because it has both a smaller mass and a lower temperature than the other options.

Explanation:

The thermal energy of an object is related to both its mass and its temperature. In this case, we are considering iron pots of different masses and temperatures. Given the options, the 2 kg pot at 25°C would have the least thermal energy. This is because it has both a smaller mass and a lower temperature than all the other options listed.

The thermal energy is calculated by multiplying the mass, specific heat, and change in temperature. An object with a smaller mass and lower temperature would therefore have less thermal energy.

Learn more about Thermal Energy here:

brainly.com/question/30819997

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Answer: D. A 2 kg pot at 25C.

Explanation:

11x + 13
12x+6 Solve for x

Answers

Answer:

x = 7

Explanation:

Simplifying

11x + 13 = 12x + 6

Reorder the terms:

13 + 11x = 12x + 6

Reorder the terms:

13 + 11x = 6 + 12x

Solving

13 + 11x = 6 + 12x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-12x' to each side of the equation.

13 + 11x + -12x = 6 + 12x + -12x

Combine like terms: 11x + -12x = -1x

13 + -1x = 6 + 12x + -12x

Combine like terms: 12x + -12x = 0

13 + -1x = 6 + 0

13 + -1x = 6

Add '-13' to each side of the equation.

13 + -13 + -1x = 6 + -13

Combine like terms: 13 + -13 = 0

0 + -1x = 6 + -13

-1x = 6 + -13

Combine like terms: 6 + -13 = -7

-1x = -7

Divide each side by '-1'.

x = 7

Simplifying

x = 7

Answer:Simple and best practice solution for 11x+13=12x+6 equation. ... + 6 Reorder the terms: 13 + 11x = 6 + 12x Solving 13 + 11x = 6 + 12x Solving for variable 'x'.

Explanation:

Select all that apply. Which statements correspond to cellular respiration? O 2 is pumped in and forces CO 2 out. CO 2 diffuses passively out of the cell. CO 2 must be pumped out of the cell. CO 2 diffuses passively into the cell. O 2 diffuses passively when converted to CO 2. O 2 diffuses passively when produced inside the cell.

Answers

Answer:

The correct answer is CO2 diffuses passively out of the cell.

Explanation:

Carbon dioxide is one of the end product of cellular metabolism.CO2 is produced as waste material inside the body after cellular respiration.

Carbon dioxide is transported out from the body by passive diffusion process which helps the CO2 gas to move along the concentration gradient from high concentration region(body) to the low concentration region(atmosphere).

Thus CO2 ia being eliminated from our body.

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How many grams of oxygen are required to react with 10.0 grams of octane (C8H18) in the combustion of octane in gasoline?