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alexandr402 [8]

3 years ago

14

When one form of energy is converted to another form in any physical or chemical change, energy input alwasy equals energy outpu

t?

1 answer:

aliya0001 [1]3 years ago

5 0

In the context of chemistry, yes. Energy input is always equal to the energy output.

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In which way would a drought affect how rodents get their energy?

love history [14]

Answer:

<h3>When a drought occurs, their food supply can shrink and their habitat can be damaged. ... Losses or destruction of fish and wildlife habitat. Lack of food and drinking water for wild animals. Increase in disease in wild animals, because of reduced food and water supplies.</h3><h3>While insects and cacti might provide a meagre supply of water, most desert animals survive by being what Price calls "water misers". ... To perform this feat, they have evolved specialized kidneys with extra microscopic tubules for extracting water from urine.</h3>

Explanation:

3 0

2 years ago

A cool, yellow-orange flame is used to heat the crucible. Would this affect the mass of the crucible? If so, how?

s2008m [1.1K]

Answer:

yes

Explanation:

Usually, it would not affect the crucible, but depending on the temperature of the flame the enamel of the crucible may begin to melt and stick to the metal object being used to handle the crucible. This tiny amount that is melted off can cause very small changes in the original mass of the crucible, which although it is almost unnoticeable it is still there. Therefore, the answer to this question would be yes.

5 0

3 years ago

Calculate the number of atoms

erastova [34]

Explanation:

13 are the number of atoms

4 0

3 years ago

Calculate the number of moles of a gas that is present in a 7.55 L container at 45°C, if the gas exerts a pressure of 725mm Hg.

vovikov84 [41]

<u>Answer:</u> The number of moles of gas present is 0.276 moles

<u>Explanation:</u>

To calculate the number of moles of gas, we use the equation given by ideal gas:

PV = nRT

where,

P = Pressure of the gas = 725 mm Hg

V = Volume of the gas = 7.55 L

n = number of moles of gas = ?

R = Gas constant = $62.3637\text{ L.mmHg }mol^{-1}K^{-1}$

T = Temperature of the gas = $45^oC=(45+273)K=318K$

Putting values in above equation, we get:

$725mmHg\times 7.55L=n\times 62.3637\text{ L.mmHg }mol^{-1}K^{-1}\times 318K\\\\n=0.276mol$

Hence, the number of moles of gas present is 0.276 moles

4 0

3 years ago

85g=kg?<br> Unit conversion.

Paraphin [41]

Answer:

0.085 kg

Explanation:

1 g=0.001 kg OR 1 kg=1000 g

so $\frac{85}{1000}$ =0.085 kg

3 0

3 years ago