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Alexeev081 [22]
3 years ago
5

Why does platinum metal make a good catalytic surface for reactant molecules?

Chemistry
1 answer:
d1i1m1o1n [39]3 years ago
3 0

Answer:

it holds reactant molecules in a good position for then to react

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10 points. Please help.
ratelena [41]

Answer:

-191.7°C

Explanation:

P . V = n . R . T

That's the Ideal Gases Law. It can be useful to solve the question.

We replace data:

2.5 atm . 8 L = 3 mol . 0.082 L.atm/mol.K . T°

(2.5 atm . 8 L) / (3 mol . 0.082 L.atm/mol.K) = T°

T° = 81.3 K

We convert T° from K to C°

81.3K - 273 = -191.7°C

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Calcium must lose two electrons to get a full outer shell. what is the name of the group to which calcium belongs
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The answer to this question would be: alkaline earth metal

Alkali earth metal is the second column group of the periodic table. In this group, the element has 2 extra electrons in their outer cells. That is why most of this metal has 2+ charge.
Their neighbor is the alkali metal which was the first column of the periodic table. The name is similar so don't confused and mix them each other.
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2. Because a cumulonimbus cloud is a towering vertical cloud
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Currently this lab is run qualitatively asking only for whether a solution is acidic, neutral, or basic. If quantitative informa
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Answer:

The only PH range which is not covered by any of the given components of the universal indicator is 7.6-8.0

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Which ones are all renewable resources?
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D, they can be renewed quickly rather than non renewables in which nonrenewable take millions of years. Biomass is all around us, so is water (hydro) and the sun is around us too. 
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