Help on identifying the solute and solvent

Answers

Answer 1

Answer:

Solute is Lithium nitrate, and solvent is water.

Explanation:

Lithium nitrate is trigonal crystal which is soluble in water.

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Cholesterol has a formula of C27H46O. What is the mass in grams of one molecule of cholesterol?

Answers

The mass in grams of one molecule of cholesterol, C27H46O is6.43×10⁻²² g

Avogadro's hypothesis

6.02×10²³ molecules = 1 mole of Cholesterol

But,

1 mole of Cholesterol = 387 g

Thus,

6.02×10²³ molecules = 387 g mole of Cholesterol

How to determine the mass of one molecule

6.02×10²³ molecules = 387 g mole of Cholesterol

1 molecule = 387 / 6.02×10²³

1 molecule = 6.43×10⁻²² g of Cholesterol

Thus, the mass of 1 molecule of cholesterol is 6.43×10⁻²² g

Learn more about Avogadro's number:

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The molar mass of cholesterol = 386.654 g/mol = 387 g/mole

3.2 mg cholesterol x 1 g/1000 mg x 1 mole/387 g x 6.02x1023 molecules/mole = 5.0x1018 molecules.

In which type of chemical reaction do two or more reactants combine to form one product, only?a. synthesis
b. decomposition
c. single replacement
d. double replacement.

Answers

A chemical reaction is defined as the process in which two more reactants are converted to form one or more different product.

The chemical reaction in which two more reactants combine to form one product is a synthesis reaction.

Synthesis reactions are defined as the reaction in which two different atoms or molecules react to form a different compound. Synthesis reactions are exothermic reactions, such that the reactions release energy in the form of heat and light.

One of the most common examples of a synthesis reaction is the formation of sodium chloride. It can be expressed as:

Na (Sodium) + Cl (Chlorine) $\rightarrow$ NaCl (Sodium Chloride)

Thus, the synthesis reaction will result in one different compound or product.

The correct answer is Option A.

To know more about synthesis reaction, refer to the following link:

brainly.com/question/24936069

Synthesis is when multiple reactants come together to form one. Decomposition is when one reactant breaks down to form multiple products which are either elements or compounds. Single replacement is when there is an element and a compound and the element switch spots with the other element( metal switch with metal, nonmental with nonmetal, vice versa). The element has to be more reactive than the like element in the compound in order for it to be able to switch. Use the reactivity series to help you with this. Double Replacement is when you have two compounds and like elements switch places.

Air tends to move from _____.a. the equator to the poles
b. conduction
c. cold air rising and warm air sinking
d. radiation

Answers

Answer:

cold air rising and warm air sinking

Explanation:

Convection is well known in nature. During convection, warm particles rise above the surface while cooler particles sink below. Hence a convection current is set up.

Air moves by convection. Hot air rises and moves toward and is then replaced with cooler air. A typical application of convection in nature is land and sea breeze.

i would say a. at the equator to the poles or maybe c. cold air rising and warm air sinking.

An aluminum sample has a mass of 80.1 g and a density of 2.70g/cm3 . According to the date to what number of significant figures should the calculate volume of the aluminum sample be expressed?

Answers

80.1 g* (1 cm^(3)/ 2.70 g)= 29.666666... cm^(3).

The calculated volume should have 3 significant figures, so the final answer is 2.97*10^(1) cm^(3)

Hope this helps~

3 Sig figs because both measurements have three sig figs. In a lab setting, you would round to your least precise measurement. So its useless to use a meter stick and a high precision scale to take measurement because you have to use the amount of Sig figs for your least precise tool

How different are the duck leeches offsprings from their parents

Answers

They are different because their appearance and general genology may differ greatly from the leeches parent.

What is the value of mass of electron?for which has 6.25 × 10^18?

Answers

Answer: the mass of an electron is approximately 9.10938356 × 10^-31 kilograms (kg)

Explanation:

Other Questions

An experiment applies heat to a substance and produces a gas that is a new and different substance. Choose the true statement.A. This represents a physical change only. B. This represents a chemical change only. C. This represents both a physical and a chemical change. D. This represents neither a physical change nor a chemical change.

What is true about Carbon-14 and Carbon-12?a. The mass of the Carbon-14 sample is less than the Carbon-12 sample, but the reactivity of both samples was the same. b. The mass of the Carbon-14 sample is greater than the Carbon-12 sample, but the reactivity of both samples was the same . c. The reactivity of the Carbon-14 sample is less than the Carbon-12 sample, but the mass of both samples was the same. d. The reactivity of the Carbon-14 sample is greater than the Carbon-12 sample, but the mass of both samples was the same.

What type of mixture scatters light and cannot be filtered? a colloid, a heterogeneous mixture a solution, a heterogeneous mixture a colloid, a homogeneous mixture a solution, a homogeneous mixture

A chemical reaction between iron atoms and oxygen molecules can only occur if(1) the particles are heated(2) the atmospheric pressure decreases(3) there is a catalyst present(4) there are effective collisions between the particles