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Mariana [72]
3 years ago
15

Pls help

Chemistry
2 answers:
Zanzabum3 years ago
7 0
You’re answer is B a liquid becomes a gas
aalyn [17]3 years ago
4 0
The answer to the question is B......
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An undergraduate weighed out 20grams of sodium hydroxide pellets. If Na =23, O = 16 andH = 1, What is the mole of this sodium hy
tatuchka [14]
The answer would be .5 mols because you take the total amount of grams, which is 20, and you had up the molar mass of sodium hydroxide, which would be 40. After you have this you would set this up as a stochiometry equation. With 1 mol on top you dived 20/40 to cancel out your grams. This leaves you with .5 mols

3 0
3 years ago
please help 13 points!!! cell wall chloroplasts mitochondria small vacuoles eukaryote cells How would you change the characteris
Angelina_Jolie [31]

Answer:

A.

Explanation:

It’s just right

4 0
2 years ago
The radioactive atom R 88 210 a is an alpha emitter. What nucleus does it produce?
olasank [31]

Answer:

X 86 206

Explanation:

Radioactive atoms are nuclei that can under go disintegration to emit either an alpha particle, beta particle or gamma radiation. The process could be spontaneous or stimulated.

When a radioactive atom R 88 210 emits alpha particle, it would produce an element with atomic number 86 and mass number 206 i.e X 86 206. An alpha particle is usually a helium nucleus.

                     R^{210} ⇒ x^{206} + He^{4} + energy

5 0
3 years ago
11 The cross section compares the densities of different Earth layers. Which Earth layer is most dense?
Naily [24]

Answer:

b

Explanation:

i took the quiz

8 0
2 years ago
What does it mean to say B is representing the dominant gene
Degger [83]

Answer:

Dominant genes are always represented by a capital letter which in this case is the letter B whereas recessive genes will be represented by a lower case letter like b.

You only need one copy of a dominant gene or allele to inherit it. A dominant allele is always expressed even if only one copy is present.

But you need two copies of genes or alleles to inherit the recessive gene. There also can't be a dominant allele of the gene if you are to inherit this.

Allele - Different forms of a gene

8 0
3 years ago
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