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masha68 [24]
3 years ago
5

In a chemical reaction 300 grams of reactant A combined with 100 grams of reactant B both A and B react to completion what is th

e mass of the product?
1. 200
2. 300
3. 400
4. It cannot be determined given the information
Chemistry
1 answer:
ivann1987 [24]3 years ago
3 0

Answer: 1.2

Explanation:

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8 0
4 years ago
If 30cm³ of 0.45 mol dm3 HCl reacted with NaOH, how many moles of HCl reacted?​
77julia77 [94]

Moles HCl reacted : 0.0135

<h3>Further explanation</h3>

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large {\boxed {\bold {M ~ = ~ \dfrac {n} {V}}}

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

So to find the number of moles can be expressed as

n = V x M

The volume of HCl 30 cm³=3.10⁻² dm³

Molarity of HCl = 0.45 mol/dm³

so moles HCl reacted :

\tt n=3.10^{-2}\times 0.45=0.0135

3 0
3 years ago
Which answer do you this is correct?
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The fourth one: Gain of an electron

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