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likoan [24]
3 years ago
12

When an ice cube melts what happens to the matter that once made up the cube

Chemistry
1 answer:
Vinil7 [7]3 years ago
3 0
Water is whats left so then that evaporates
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How many sulfur atoms are present in 100 grams of this compound? Report your answer to three significant figures.
kap26 [50]

Answer:

1.88 × 10²⁴ atoms

Explanation:

Step 1: Given data

Mass of sulfur: 100 g

Step 2: Calculate the moles corresponding to 100 g of sulfur

The molar mass of sulfur is 32.07 g/mol. The moles corresponding to 100 g of sulfur are:

100 g × (1 mol/32.07 g) = 3.12 mol

Step 3: Calculate the number of atoms in 3.12 moles of sulfur

We will use Avogadro's number: there are 6.02 × 10²³ atoms of sulfur in 1 mole of sulfur.

3.12 mol × (6.02 × 10²³ atoms/1 mol) = 1.88 × 10²⁴ atoms

7 0
3 years ago
Physical and chemical change
Greeley [361]
physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed. For example, if a piece of paper is cut up into small pieces it still is paper.
5 0
3 years ago
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What is the molecular formula of first 20 elements​
attashe74 [19]

Answer:

H

He

Li

Be

B

C

N

O

F

Ne

Na

Mg

Al

Si

P

S

Cl

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3 0
3 years ago
Name some acids and in what and how we used them
Ne4ueva [31]

Answer:

Acid Uses

Organic acids

Citric acid As a preservative for food As a flavouring agent

Ascorbic acid (also called vitamin C) In the treatment of bone marrow and scurvy diseases

Acetic acid Added to pickles to make them sour

Explanation:

7 0
3 years ago
____B₂Br₆ + ___HNO₃ ---->___B(NO₃)₃ + ____HBr balance them thanks!!!
natita [175]
1, 6, 2, 6
In the order you wrote them in
6 0
3 years ago
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