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jonny [76]
3 years ago
6

What is the smallest substance? 1 .mixture 2 .compound 3 .element

Chemistry
2 answers:
Andrew [12]3 years ago
8 0
Number 3 it’s element
Katena32 [7]3 years ago
8 0
Element!!!!!!!!!!!!!!








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Classify the same processes as exothermic or endothermic.
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Answer:

1.endothermic

2.exothermic

3.exothermic

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19 The coefficients in a balanced chemical equation represent(l ) the mass ratios of the substances in the reaction(2) the mole
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2. The coefficients represent to molar ratios in a balanced equation.
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What is the mass of protons neutrons and electrons PLZ HURRY
Dmitry_Shevchenko [17]

Answer:

Mass of proton neutron and electron

Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.

Explanation:

Hope this helps :)

6 0
3 years ago
What is the identity of a 100. g sample of metal that, upon absorbing 4680 J of heat, increases in temperature by 52.0°C?
krok68 [10]

The metal is aluminium

<u>Explanation:</u>

Given:

Heat, q = 4680 J

Mass, m = 100g = 0.1kg

ΔT = 52°C

sample = ?

We know:

q = mcΔT

On substituting the value we get:

4680 = 0.1 X c X(52)\\\\c = \frac{4680}{5.2} \\\\c = 900 J/Kg^oC

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3 0
3 years ago
If 13 grams of copper sulfate is reacted with zinc how much of each product is produced?
Sladkaya [172]

Answer:

No. Of Moles of zinc = m/Ar

= 13/ 65.38 = 0.198 moles

From balanced equation, Mole ration between CuSO4 and Zn is 1 : 1

So only 0.198 moles of CuSO4 reacts, it is in excess

Mass = no of Moles X Mr

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Volume = mass m denisty

Volume j 31.59 / 3.6 = 8.78 ml

Explanation:

i think this wrong

7 0
3 years ago
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