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Pepsi [2]
3 years ago
14

Girls are usually completely physically mature by _____ years old.

Chemistry
2 answers:
fomenos3 years ago
6 0

Answer:

17

Explanation:

edge 2020 i just took the topic test

krok68 [10]3 years ago
5 0

Answer:

a 17 bc it is how it works

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What is the term used by particular kind of matter Called??
weqwewe [10]

Answer:

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Explanation:

The term used by particular kind of matter is called substance.

A substance is a particular kind of matter because it has physical properties.

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3 years ago
Which formula represents an ionic compound?<br> (1) NaCl (3) HCl<br> (2) N2O (4) H2O
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NaCl consists of a salt, which is a nonmetal (Na) and Cl, which is a metal. When a nonmetal and a metal are combined, it makes the compound ionic.
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2 years ago
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Here just look at the pic here

Explanation:

7 0
3 years ago
If 28 ml of 5.8 m h2so4 was spilled, what is the minimum mass of nahco3 that must be added to the spill to neutralize the acid?
ipn [44]

First we have to refer to the reaction between the acid and the base: <span>

H2SO4 + 2 NaHCO3 ---> 2 H2O + 2 CO2 + Na2SO4 

From this balanced equation we can see that for every 1 mol of acid (H2SO4), we need 2 mol of base (NaHCO3) to neutralize it. Given 28 ml of 5.8 M acid, we need to find out how many mols of acid that is: 

<span>28mL * (1L/1000mL) * 5.8 mol/L =  0.1624 mol H2SO4</span></span>

<span>
Since we need 2 mol of base per mol of acid, we need:</span>

<span> 2*0.1624 mol = 0.3248 mol NaHCO3 </span><span>

MolarMass of NaHCO3 is 84.01 g/mol 

<span>0.3248 mol*(84.01g/mol) = 27.29 g NaHCO3</span></span>

3 0
2 years ago
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11Alexandr11 [23.1K]

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