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sertanlavr [38]
3 years ago
14

Which phrase defines complementary goods?

Chemistry
1 answer:
Andrew [12]3 years ago
7 0

Answer:

goods used in combinations with other products

Explanation:

its a

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If a sample of a substance contains 9.03 x 1023 representative particles, how many moles does this represent?
GaryK [48]
I believe its 10^23 u r saying
then no. of moles= 9.03*10^23/6.02*10^23=1.5mole
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An acid with molar mass 84.48 g/mol is titrated with 0.650 M KOH. What volume of KOH solution is needed to titrate 1.70 grams of
RSB [31]

Answer:

V=0.0310L=3.10mL

Explanation:

Hello.

In this case, since the acid is monoprotic and the KOH has one hydroxyl ion only, we can see that at the equivalence point the moles of both of them are the same:

n_{acid}=n_{KOH}

Thus, since we are given 1.70 g of the acid, we compute the moles of acid that were titrated:

n_{acid}=1.70g*\frac{1mol}{84.48g}=0.0201mol

Which equal the moles of KOH. In such a way, since the molarity is defined as moles over liters (M=n/V), the liters are moles over molarity (V=n/M), thus, the resulting volume is:

V=\frac{0.0201mol}{0.650mol/L}\\\\V=0.0310L=3.10mL

Best regards!

7 0
3 years ago
A substance added in The final stages to remove sulphur from coal is
Deffense [45]

Answer:

calcium oxide is injected into the final stage of the scubber, wich then reacts with the sulfur dioxide to form calcium sulfite.

Explanation:

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3 years ago
In most cases, reactant-favored reactions have:​
vekshin1

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Have negitive values

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