A student states that ALL Substances that are uniform throughout are pure substances. Why is this false?

Answers

Answer 1

Answer:

The statement is false because a solution, which consists of two or more substances, is also uniform throughout. An example is sugar in water.

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Question 1 of 152 PointsWhat is another name for a pure substance?Answer here

Using the following equation:Fe2O3(s) + 3 H2(g) → 2 Fe(s) + 3 H2000)
a) How many grams of iron can be made from 6 moles H2

Answers

223.4 g of iron can be formed from 6 moles of hydrogen gas.

Explanation:

Fe₂O₃(s) + 3 H₂(g) → 2 Fe(s) + 3 H₂O(l)

Since the given equation is the balanced one, we need 3 moles of hydrogen gas to make 2 moles of iron, so the molar ratio is 3:2. So, from 6 moles of hydrogen gas, we can make few moles of iron as,

$$ (2* 6)/(3) = 4 moles of iron$

Molar mass of iron = 55.85 g

So amount of iron produced = 4 moles × 55.85 g/mol = 223.4 g of iron

What types of atoms release nuclear radiation

Answers

Neutrons is the answer

Aqueous solutions of chromium(III) iodide and potassium hydroxide react to give a chromium(III) hydroxide precipitate and aqueous potassium iodide.Express your answer as a chemical equation. Identify all of the phases in your answer. Enter noreaction if there is no reaction.

Answers

CrI₃ (aq) + 3 KOH (aq) → Cr(OH)₃ (s) + 3 KI (aq)

Explanation:

The chemical reaction between chromium (III) iodide (CrI₃) and potassium hydroxide (KOH):

CrI₃ (aq) + 3 KOH (aq) → Cr(OH)₃ (s) + 3 KI (aq)

where:

(aq) - aqueous

(s) - solid

The reaction will produce solid chromium(III) hydroxide (Cr(OH)₃) and KI aqueous potassium (KI).

Learn more about:

problems with chromium(III) salts

brainly.com/question/9821533

#learnwithBrainly

A bowling ball is pushed with a force of 22.0 N and accelerates at 5.5m/s. What is the mass of the bowling ball

Answers

Hello!

Data:

F (force) = 22.0 N
m (mass) = ? (in Kg)
a (acceleration) = 5.5 m/s²

We apply the data to the Resultant Force formula, we have:

$F =m*a$

$22 = m*5.5$

$5.5 m = 22$

$m = (22)/(5.5)$

$\boxed{\boxed{m = 4\:Kg}}\end{array}}\qquad\checkmark$

I hope this helps. =)

The reaction between zinc and hydrogen chloride produces zinc chloride, hydrogen gas, and heat. If more heat is removed from the reaction, how does the rate of reaction change to counter the action?

Answers

Answer:

The rate of reaction increases to counter the action of removing heat.

Explanation:

The reaction between zinc and hydrogen chloride produces zinc chloride, hydrogen gas, and heat.
The reaction is exothermic reaction. Heat is produced in the reaction.
It means the temperature of system increase when reaction proceeds. When heat is removed from system, it stimulates the reaction to fast to produce more heat.
Due to fast reaction rate of reaction increases.

How can the boiling point of a liquid be raised without adding soluble impurity?

Answers

insoluble impurities donot raise the boiling point of a solution. it could be explained from raoults law that vapor pressure of the solution is affected by the partial vapour pressure of components in the solution.
That is if the solute is not dissolved in a solution then how could it raise the boiling point. It wont affect its boiling point at all.

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