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Hitman42 [59]
3 years ago
7

which of the following describes how ice could have once covered warm places such as australia and india

Chemistry
1 answer:
4vir4ik [10]3 years ago
6 0

Answer:

U shaped vallies?

Explanation:

(i dont know if this was one of the options)

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I AMMMM GIVING 45 POINTSSSS PLSSS HELPPPPPPPP
Westkost [7]

Answer:

mNaNO3 =765g

Explanation:

First, we write the balanced chemical equation representing the chemical reaction that happened between aluminum nitrate and sodium chloride.

Balanced chemical equation:

AL(NO3)3+3NaCl ⟶ 3 NaNO3+AlCl3

According to the equation, each mole of aluminum nitrate requires three moles of sodium chloride. Thus, the required number of moles of sodium chloride is

4 Mol ⋅ 3 = 12mol

Based on the data provided in the table, there were 9 moles of sodium chloride used in the reaction, which was not enough for the entirety of aluminum nitrate to react. So, sodium chloride must have been the limiting reactant.

Therefore, we use the number of moles (n) of sodium chloride to calculate the number of moles of sodium nitrate, which has a 1:1 ratio with sodium chloride.

Number of moles sodium nitrate:

nNaNO3=nNaCl

nNaNO3 = 9 mol

We can also calculate the mass (m) of sodium nitrate that was produced by multiplying its number of moles by its molar mass (MM), 85.00g/mol.

Mass of sodium nitrate produced:

mNaNO3 = nNaNO3 ⋅ MMNaNO3

mNaNO3 = 9 mol ⋅ 85.00 g/mol

mNaNO3 =765g

8 0
3 years ago
How many sulfur atoms are there in 400 moles of sulfur?
Savatey [412]

Answer:

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Explanation:

4 0
4 years ago
An organic chemist combines 2-methyl-2-butanol with sodium dichromate in sulfuric acid and water. Which of the following best de
Valentin [98]

Answer:

SN1 = a stepwise loss of a leaving group to form a carbocation followed by nucleophilic attack

Explanation:

Since 2-methyl-2-butanol is tertiary alcohol, the first step will be loss of leaving group to form a 3° carbocation which is very stable and favours SN1, followed by attack of nucleophile

4 0
4 years ago
Read 2 more answers
How many moles of solute are in 300 mL of 1.5 M CaCl2? How many grams fo CaCl2 is this?
tester [92]

Answer:

1. 0.45 mole

2. 49.95g

Explanation:

The following were obtained from the question:

Volume of solution = 300mL = 300/1000 = 0.3L

Molarity = 1.5 M

Mole of CaCl2 =?

1. We can obtain the mole of the solute as follow:

Molarity = mole of solute /Volume of solution

1.5 = mole of solute/0.3

Mole of solute = 1.5 x 0.3

Mole of solute = 0.45 mole

2. The grams in 0.45 mole of CaCl2 can be obtained as follow:

Molar Mass of CaCl2 = 40 + (35.5 x 2) = 40 + 71 = 111g/mol

Mole of CaCl2 = 0.45 mole

Mass of CaCl2 =?

Mass = number of mole x molar Mass

Mass of CaCl2 = 0.45 x 111

Mass of CaCl2 = 49.95g

3 0
3 years ago
Read 2 more answers
A substance that can be separated into two or more substances only by a chemical change is a(n) _____. (1 point) solution elemen
neonofarm [45]
Is a(n) _Compound_.

Hope this helps
5 0
3 years ago
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