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Sauron [17]
3 years ago
7

Steel is an example of a pure substance because it is made up of two different metals melted together. (4 points) True False

Chemistry
1 answer:
Lunna [17]3 years ago
3 0

Answer:

false

Explanation:

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What is sound energy?
Delicious77 [7]

Answer:

It is

Explanation:

The reason is because it is giving out waves of sound to create music making energy.

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3 years ago
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2.4 g of a solid is added to 91 g of water. What is the mass % concentration of the solution?
vladimir2022 [97]

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2.64%

Explanation:

mass percent = (grams of solute / grams of solution) x 100

mass percent = (2.4 / 91) × 100

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1 year ago
Which body part MOST LIKELY formed this fossil?<br> blood<br> B<br> bones<br> fur<br> D<br> skin
Inessa [10]

Answer:

Bones are the correct answer.

8 0
2 years ago
An iron chloride compound contains 55.85 grams of iron and 106.5 grams of chlorine. What is the most likely empirical formula fo
mart [117]

Answer:

FeCl_{3}

Explanation:

Moles =\frac {Given\ mass}{Molar\ mass}

mass of Fe = 55.85 g

Molar mass of Fe = 55.85 g/mol

<u>Moles of Fe = 55.85 / 55.85 = 1</u>

mass of Cl = 106.5 g

Molar mass of Cl = 35.5 g/mol

Moles of Cl = 106.5 / 35.5 = 3

Taking the simplest ratio for Fe and Cl as:

1 : 3

The empirical formula is = FeCl_{3}

3 0
3 years ago
A 155 g sample of an unknown substance was heated from 25°c to 40°c. in the process, the substance absorbed 569 calories of ener
Tasya [4]
Energy= 2381 joules
heat= Mass(kg) *change in temperature(K) * Cp
2381=0.155*(15)*Cp
Cp=1024 J/kg K
5 0
3 years ago
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