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dlinn [17]
3 years ago
12

A cube of metal has a mass of 5.05 x 10°g and its density is known to be 12.77 g/mL, what is the volume of this metal?

Chemistry
1 answer:
Usimov [2.4K]3 years ago
8 0

Answer:

Explanation:

option A is correct

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Determine the overall energy change for the reaction between hydrogen and oxygen shown in Question 13. Use Figure 2.
zimovet [89]

Answer:

–500KJ

Explanation:

Data obtained from the question include the following:

Heat of reactant (Hr) = 800KJ

Heat of product (Hp) = 300KJ

Enthalphy change (ΔH) =..?

The enthalphy change is simply defined as the difference between the heat of product and the heat of reactant i.e

Enthalphy change = Heat of product – Heat of reactant

ΔH = Hp – Hr

With the above formula, we can easily calculate the enthalphy change as follow

ΔH = Hp – Hr

ΔH = 300 – 800

ΔH = –500KJ.

Therefore, the overall energy change for the reaction between hydrogen and oxygen shown in the diagram above is –500KJ

5 0
3 years ago
the gravitational force between two objects depends on the distance between the objects and each object? ​
Nina [5.8K]

Answer:

Gravitational force between two objects depends on: a. The weight of the objects c. The mass of each object b. The distance between the objects d. Both b and c Please select the best answer from the choices provided A B C D

✓d

7 0
2 years ago
An atom can be called a particle, but a molecule is never called a particle. True or False ?
ivanzaharov [21]

Answer: False; it contains particles, but that doesn't mean it's a particle itself.

<em>Hope this help. </em>

5 0
3 years ago
A SCUBA diver with a 4-liter lung capacity is at a depth of 135 feet (4 atm.) She ascends to the surface where the
Nostrana [21]

Answer:

16L

Explanation:

Data obtained from the question include:

V1 (initial volume) = 4L

P1 (initial pressure) = 4atm

P2 (final pressure) = 1atm

V2 (final volume) =?

Using Boyle's law equation P1V1 = P2V2, the new volume can be obtain as follow:

P1V1 = P2V2

4 x 4 = 1 x V2

16 = V2

V2 = 16L

Therefore, her new lungs volume is 16L

5 0
3 years ago
Read 2 more answers
In a reaction process a company expected to make 6.8
svetlana [45]

Answer:

1) 61.8%

Explanation:

(4.2/6.8)*100

3 0
3 years ago
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