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Lelu [443]
3 years ago
5

Which do you think would be safer for heating a flammable liquid sample contained in an open beaker, and Bunsen burner or an ele

ctric hot plate? Why?
Chemistry
1 answer:
Ray Of Light [21]3 years ago
6 0

Answer:

Electric hot plate

Explanation:

Considering that the liquid sample is flammable, it wouldn’t be a good idea to have it near a source of fire which the Bunsen burner provides, rather it would be better to heat through an electric hot plate as its not near a source of flame and instead produces heat through electricity.

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What mass of oxygen (O2) forms in a reaction that forms 15.90 g C6H12O6? (Molar mass of O2 = 32.00 g/mol; molar mass of C6H12O6
Dafna11 [192]

The answer is: the mass of oxygen is 16.95 grams.

The overall balanced photosynthesis reaction:  

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.  

m(C₆H₁₂O₆) = 15.90 g; mass of glucose.

n(C₆H₁₂O₆) = m(C₆H₁₂O₆) ÷ M(C₆H₁₂O₆).

n(C₆H₁₂O₆) = 15.9 g ÷ 180.18 g/mol.

n(C₆H₁₂O₆) = 0.088 mol; amount of glucose.

From chemical reaction: n(C₆H₁₂O₆) : n(O₂) = 1 : 6.

n(O₂) = 6 · 0.088 mol.

n(O₂) = 0.53 mol; amount of oxygen.

m(O₂) = 0.53 mol · 32.00 g/mol.

m(O₂) = 16.95 g; mass of oxygen.

5 0
3 years ago
Read 2 more answers
How many moles of atoms are contained in 15.7 g of Bromine
Vlada [557]
1 mol of Br = 79.9 g

15.7 g / 79.9 g = 0.196 moles of atoms
3 0
3 years ago
How many particles are there in 5.0 moles​
grigory [225]

Answer:

3.01 × 10^24 particles

Explanation:

According to Avagadro, in one mole of a substance, there are 6.02 × 10^23 atoms or particles.

Using the formula: N = n × NA

Where;

N= number of particles or atoms

n = number of moles

NA = Avagadro's constant or number

This means that for 5 moles of a substance, there will be:

5 × 6.02 × 10^23

= 30.1 × 10^23

= 3.01 × 10^24 particles

8 0
3 years ago
Which of the following is an example of kinetic energy?
deff fn [24]

Answer:

A. The energy of moving particles near a fire

Explanation:

7 0
3 years ago
Which is a drawback of agricultural technology?
Umnica [9.8K]

Answer:

B.

Explanation:

Everything else is not a drawback, it is a benefit.

4 0
3 years ago
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