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Olin [163]
3 years ago
14

What is this pole made of

Chemistry
1 answer:
Margaret [11]3 years ago
3 0
It seems like its some sort of polished plastic
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Plz answer thx<br><br><br> ​How many moles are in 2.5 x 10^18 grams of water?
alex41 [277]

Answer:

1.39\times 10^{17} moles of water in 2.5\times 10^{18} g of water.

Explanation:

Mass of water = m = 2.5\times 10^{18} g

Molar mass of water = M = 18 g/mol

Moles = n = \frac{m}{M}

n=\frac{2.5\times 10^{18} g}{18 g/mol}=1.39\times 10^{17} moles

So, there are 1.39\times 10^{17} moles of water in 2.5\times 10^{18} g of water.

3 0
3 years ago
How many significant figures are in the mass 3.0047 g?
Rudik [331]

Answer:

5 significant figures

5 0
3 years ago
When magnesium (mg) metal is placed in hydrochloric acid (hcl), it forms magnesium chloride (mgcl2) and a gas. what gas is forme
Delvig [45]
Magnesium in hydrochloric acid forms H2 (hydrogen) gas according to the balanced chemical equation:
Mg + 2HCl→H2 + MgCl2
6 0
3 years ago
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Which phase groups the chromosomes of the daughter cells into new nuclei?
FinnZ [79.3K]
The answer is the telephase.<span />
3 0
3 years ago
Hi um whats a single and double reaction
abruzzese [7]
A single-replacement reaction is a chemical reaction in which one element is substituted for another element in a compound, generating a new element and a new compound as products.

A double-replacement reaction occurs when parts of two ionic compounds are exchanged, making two new compounds. A characteristic of a double-replacement equation is that there are two compounds as reactants and two different compounds as products.

The key difference between single displacement and double displacement reaction is that, in single displacement reactions, one chemical species replaces a part of another chemical species whereas, in double displacement reactions, exchange of two ionic species between two molecules occur.

Hope this helps you.
3 0
3 years ago
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