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Strike441 [17]
3 years ago
11

A solid that form from liquid in a chemical reaction is called

Chemistry
1 answer:
lesantik [10]3 years ago
3 0

precipitate is the answer

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Suppose three neutrons are released when an atom in a sample of fissionable nuclei undergoes fission. Each of these neutrons has
Eddi Din [679]

Answer:

13 nuclei

Explanation:

From the question, the fission of one nucleus produces three neutrons which causes  more nuclei to undergo fission.

This implies that, after the first fission, three neutrons cause three nuclei to undergo fission. The three nuclei that underwent fission produces nine neutrons which causes the fission of nine nuclei.

All together we the number of nuclei that underwent fission as;

1 + 3 + 9 = 13 nuclei.

3 0
3 years ago
How many moles are in 128.9 grams of Cr2(SO3)2?
Dominik [7]

Answer: 0.5 moles

Explanation:

Cr2(SO3)2 is the chemical formula for chromium sulphate.

Given that,

Amount of moles of Cr2(SO3)2 (n) = ?

Mass of Cr2(SO3)2 in grams = 128.9g

For molar mass of Cr2(SO3)2, use the atomic masses:

Chromium, Cr = 52g;

Sulphur, S = 32g;

Oxygen, O = 16g

Cr2(SO3)2 =

(52g x 2) + [(32g + 16g x 3) x 2]

= 104g + [(32g + 48g) x 2]

= 104g + [80g x 2]

= 104g + 160g

= 264g/mol

Since, n = mass in grams / molar mass

n = 128.9g / 264g/mol

n = 0.488 mole [Round the value of n to the nearest tenth which is 0.5

Thus, there are 0.5 moles in 128.9 grams of Cr2(SO3)2

7 0
3 years ago
A student runs two experiments with a constant-volume "bomb" calorimeter containing 1500.g of water.
muminat

Answer:

See explaination

Explanation:

Please kindly check attachment for the step by step solution of the given problem

3 0
3 years ago
Complete the balanced equation for the reaction that occurs when formic acid (hcooh) dissolves in water. please include the stat
nignag [31]
Your balanced equation for this reaction is:

HCOOH (aq) + H2O (aq) → HCOO- (aq) + H3O+ (aq)

So from the reaction, we can see when formic acid dissolved in water so H3O+ ions will be formed.
and we can see that it is a balanced equation as:
we have H atoms = 4 on both sides of the reaction
and C atoms = 1 atom on both sides of the reaction
and O atoms = 3 atoms on both sides of the reaction
So it is our final balanced equation of the reaction.
8 0
3 years ago
Which is a molecule?<br> A. Ne<br> B. NaCL<br> C. Trail Mix<br> D. graphene
elixir [45]
B) NaCl is a molecule.
5 0
3 years ago
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