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Andru [333]
2 years ago
7

Calculate the mass of al2so4)3 in 250ml of solution if the concentration is .48 N​

Chemistry
1 answer:
slamgirl [31]2 years ago
5 0

ddgjooygllfsyyuugffguiiuuhhhhhuccbjji

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2 AICI3 + 3 Ca - 3 CaCl2 + 2 Al
Ivanshal [37]
50 grams of calcium
8 0
2 years ago
Which number is the same as 8.7 x 10^-2?<br><br>A.0.087 <br>B.0.08 <br>C.0.0087 <br>D.0.87
Butoxors [25]
This correct option is C.
10^-2 = 0.001
8.7 * 10^-2 = 8.7 * 0.001 = 0.0087
Thus, 8.7 * 10^-2 is equivalent to 0.0087.
3 0
3 years ago
Read 2 more answers
___________, is the process by which a nucleus of an unstable atom loses energy by
likoan [24]
<span>The answer to this would be radioactive decay. This is also known as "nuclear decay" or "radioactivity".</span>
4 0
3 years ago
Consider these two cases. Case 1: An electron jumps from energy level 5 to energy level 2 in an atom. Case 2: An electron jumps
xenn [34]

Answer:

1.  A photon is emitted by the atom.

2. More energy is emitted or absorbed for case 2

Explanation:

The Bohr's model of the atom was based on quantum mechanics idea. He suggested that electrons move in specific spherical orbits round the nucleus.

The claims of his model emphasized on the premise that electrons only move in permissible orbits or energy levels round the nucleus.

The ground state is the lowest energy state available where n= 1.

The excited state is energy levels of n = 2,3,4 .....

Problem 1

For an electron to return to the ground state from a higher energy level, i.e from  5 to 2 in case 1, energy is emitted in form of photons.

Problem 2

More energy is emitted or absorbed when an electron moves from a higher energy level to a more lower one or jumps from a lower energy level to a more higher one.

8 0
3 years ago
Which of these is a characteristic of warm air?
jeka57 [31]

Answer: B.

Explanation:

Warm air molecules are far apart, while cool air molecules are packed closer together.

7 0
2 years ago
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