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svetlana [45]
3 years ago
15

Please anyone help please I will pray for you

Chemistry
1 answer:
torisob [31]3 years ago
5 0

Answer:

-pneumonoultramicroscopicsilicovolcanoconiosis

-pneumonoultramicroscopicsilicovolcanoconiosis

Explanation:

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Copper chloride cannot be produced by reacting copper with hydrochloric acid, why?
tatiyna
The equation that you’re looking at is Cu (copper) + HCl (hydrochloric acid) —> CuCl (copper chloride). This doesn’t work because copper chloride doesn’t contain hydrogen. The equation would only work if the reactants were chlorine and copper only.
5 0
2 years ago
Room temperature is usually considered to be 25°C. What is that in kelvins?
kotegsom [21]

Answer:

298.15 K.

Explanation:

Room temperature is generally taken to be 25 °C (around 77 °F). 0 °C is equivalent to 273.15 K, so we add 273.15 to 25 to find that room temperature is around 298.15 K

5 0
3 years ago
What effect does temperature have on reaction rate?
barxatty [35]
The answer for this multiple choice question is C



7 0
2 years ago
Effects to the nutrient cycle if the water cycle, oxygen cycle and carbon cycle are affected
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2 years ago
What is the total number of moles represented by 20 grams of CACO3
Nutka1998 [239]

Answer:

B. 0.2.

Explanation:

  • We can use the relation:

<em>n = mass/molar mass</em>

mass of CaCO₃ = 20 g, molar mass of CaCO₃ = 100.0869 g/mol.

<em>∴ n = mass/molar mass = </em>(20 g)/(100.0869 g/mol) <em>= 0.1998 ≅ 0.2 mol.</em>

<em></em>

<em>So, the right choice is: B. 0.2.</em>

8 0
3 years ago
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