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andrezito [222]
3 years ago
15

What is the answer please and why is this answer

Chemistry
1 answer:
Ad libitum [116K]3 years ago
5 0
The answer is c it was 1510 is 1950 and in 1990 it was 16000

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What is the difference between matter, mass, and volume?​
Serga [27]
<h2>The difference between matter, mass, and volume is that:</h2>

<u>Matter</u> is a physical substance which can be touched, seen, smelled, and sometimes heard. It comes in different states: liquid, solid, gas, and plasma.

<u>Mass</u> is the measure of how much <u>matter</u> is in an object.

<u>Volume</u> is the measure of how much space is inside of a 3D object.

7 0
3 years ago
I need to know the answer to this question ?‍♀️
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This is the pattern formed in a fluid when heating causes part of the fluid to rise and then cooling causes it to sink again. Within Earth's mantle they circulate heat and drive plate tectonic processes. Within the atmosphere and oceans, they drive winds and weather patterns:Convection Cell
8 0
4 years ago
While burning coal and charcoal, you notice that coal releases more heat than charcoal. That means that the... 1. elastic energy
Dafna11 [192]

Answer:

3). Chemical potential energy

1). lower in charcoal than in coal.

Explanation:

Chemical potential energy is defined as the energy that can be absorbed or stored in a substance's chemical bonds. It can be released when there is a change in the number of particles of the substance.

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4 0
3 years ago
In terms of chemical bonds and electrons, what kinds of changes occur between atoms when substances undergo chemical reactions?
STALIN [3.7K]
In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
<span>www.middleschoolchemistry.com/lessonplans/chapter6/lesson1</span>
8 0
4 years ago
How many grams of potassium bromide, KBr, are in 100mL of a 0.50 M solution?
VMariaS [17]

Answer:

5.95g

Explanation:

1 dm^{3} = 1000 mL

∴ 100 mL = 100 ÷ 1000 = 0.1 dm^{3}

Volume = <u>0.1 </u>dm^{3}<u />

Concentration = <u>0.5 M</u>

Concentration = \frac{No. of moles}{volume}

0.5 = \frac{x}{0.1}

No. of moles = 0.5 x 0.1 = <u>0.05 moles</u>

No. of moles = \frac{mass}{mass. in. 1. mole}

Mass in 1 mole of KBr = 39 + 80 = 119g (39 is the mass of potassium and 80 is the mass of bromine)

0.05 = \frac{x}{119}

x = 119 × 0.05 = 5.95g

4 0
3 years ago
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