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3 years ago

11

What is a chemical change?

1 answer:

marin [14]3 years ago

5 0

Answer:

I think B

Change into new matter forms

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Salts are composed of ions that form a tightly packed and ordered network, which is called a crystal lattice, and it is held tog

zimovet [89]

This is held together by the charges of anions and cations that are attracted to each other, which is the reason why crystal lattice is being formed beside the fct that it has tightly packed network. The crystal lattice are the crystals which has an arrangement that could be describe with its three dimensional feature.

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4 years ago

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What are two main ways that minerals are classified

Art [367]

1st answer :- The two main methods of mineral formation are cooling and evaporation.

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4 years ago

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PLZ HELP HURRY PLZZZZZ WILL GIVE BRAINLIEST

Amiraneli [1.4K]

Answer:

I think its b

Explanation:

6 0

4 years ago

Sarah measures out 151 grams of SO2. How many miles is this? Express your answer to three significant figures

elena-s [515]

150 g SO₂ = 2.36 mol SO₂

M_r = 32.06 + 2×16.00 = 32.07 + 32.00 = 64.06

Moles of SO₂ = 151 g SO₂ × [1 mol SO₂/64.06 g SO₂] = 2.36 mol SO₂

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3 years ago

A 5.098 mass % aqueous solution of potassium hydroxide has a density of 1.05 g/mL. Calculate the molality of the solution. Give

GarryVolchara [31]

<u>Answer:</u> The molarity of solution is 0.954 M

<u>Explanation:</u>

We are given:

5.098 mass % solution of potassium hydroxide

This means that 5.098 grams of potassium hydroxide is present in 100 grams of solution

To calculate volume of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of solution = 1.05 g/mL

Mass of solution = 100 g

Putting values in above equation, we get:

$1.05g/mL=\frac{100g}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{100g}{1.05g/mL}=95.24mL$

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Given mass of potassium hydroxide = 5.098 g

Molar mass of potassium hydroxide = 56.1 g/mol

Volume of solution = 95.24 mL

Putting values in above equation, we get:

$\text{Molarity of solution}=\frac{5.098\times 1000}{56.1\times 95.24}\\\\\text{Molarity of solution}=0.954M$

Hence, the molarity of solution is 0.954 M

7 0

4 years ago