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gtnhenbr [62]
3 years ago
5

In the chemical laboratory, what does a mortar and pestle function as?. .

Chemistry
2 answers:
likoan [24]3 years ago
5 0
B. it is used to crush substances therefore it would be decreasing the surface area 
Eduardwww [97]3 years ago
3 0
In a chemical laboratory, a mortar and pestle function is to decrease surface area of a solute. The correct answer is B.
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When does boiling occur?
butalik [34]

Water boils at 100 Degrees Celsius or 212 degrees Fahrenheit

8 0
3 years ago
Yet a third pair of compounds of manganese and oxygen is 50.48% and 36.81% oxygen respectively. In what small whole number ratio
Mariulka [41]

Answer:

The number ratio is 4:7

Explanation:

Step 1: Data given

Compound 1 has 50.48 % oxygen

Compound 2 has 36.81 % oxygen

Molar mass oxygen = 16 g/mol

Molar mass manganese = 54.94 g/mol

Step 2: Calculate % manganes

Compound 1: 100 - 50.48 = 49.52 %

Compound 2: 100 - 36.81 = 63.19 %

Step 3: Calculate mass

Suppose mass of compounds = 100 grams

Compound 1:

 50.48 % O = 50.48 grams

 49.52 % Mn = 49.52 grams

Compound 2:

36.81 % O = 36.81 grams

63.19 % Mn = 63.19 grams

Step 4: Calculate moles

Compound 1

Moles O = 50.48 grams / 16.0 g/mol = 3.155 moles

Moles Mn = 49.52 grams / 54.94 g/mol = 0.9013 moles

Compound 2

Moles O = 36.81 grams / 16.0 g/mol = 2.301 moles

Moles Mn = 63.19 grams / 54.94 g/mol = 1.150 moles

Step 5: calculate mol ratio

We will divide by the smallest amount of moles

Compound 1

O: 3.155/0.9013 = 3.5

Mn: 0.9013 / 0.9013 = 1

Mn2O7

Compound 2

O: 2.301 / 1.150 = 2

Mn: 1.150 / 1.150 = 1

MnO2

The number ratio is 2:3.5 or 4:7

7 0
3 years ago
I need help with this pls
coldgirl [10]

Answer:

C Is The Correct Answer Because The Deeper The Rock Is The Older It Is So The Top Is The Youngest And The Bottem Is The Oldest

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Which nonmetals in the atmosphere and their combinations are essential for life on earth
geniusboy [140]
Nitrogen, oxegyn, and water are nonmetals in the atmosphere and combinations are essential for life on earth
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3 years ago
Which metal will cool faster in water<br> steel <br> copper<br> brass<br> aluminum
RideAnS [48]

Answer:

Copper!

Explanation:

Hope This Helps

4 0
3 years ago
Read 2 more answers
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