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grandymaker [24]
3 years ago
10

True or False. Explain the false statements:

Chemistry
1 answer:
juin [17]3 years ago
8 0
A. true
b. false
c. true
d. false
e. false
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How many moles of boron<br> (B, 10.81 g/mol) are in 37.8<br> grams of boron?<br> [?] moles
madreJ [45]

Answer:

37.8g/ 10.81g/mol = 3.4968...moles

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2 years ago
There are two different compounds of sulfur and fluorine.
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What's your question......................
5 0
3 years ago
1. How many molecules are in 240g of sulfuric acid?
Soloha48 [4]

Answer:

14.8 × 10²³ molecules

Explanation:

Given data:

Mass of sulfuric acid = 240 g

Number of molecules = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of moles of sulfuric acid

<em>Number of moles = mass/ molar mass</em>

Number of moles =  240 g/ 98 g/mol

Number of moles = 2.45 mol

Number of molecules:

1 mole = 6.022 × 10²³ molecules

2.45 × 6.022 × 10²³ molecules

14.8 × 10²³ molecules

3 0
3 years ago
What is vaporization A: a gas becoming a liquid B: a liquid becoming a solid C: a gas becoming a solid D: a liquid becoming a ga
maxonik [38]
A liquid becoming a gas. For instance water (liquid) turns into steam (gas).
5 0
3 years ago
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The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows: 2C8H18 (l) 25 O2(g) --&gt; 16 CO2
Svet_ta [14]
The ratio of mole number of the reactants and products is equal to the coefficients. So the answer is a. 18.75 mol. b. 35.1 g. c. 1.38 * 10^5 g.
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3 years ago
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