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Elina [12.6K]
3 years ago
12

Temperature has no significance during the calculation of numerical .why?? ^_^​

Chemistry
1 answer:
Brums [2.3K]3 years ago
7 0

Answer:

Explanation:

concepts, such as the internal energy of a system; heat or sensible heat, which are defined as types of energy transfer (as is work); or for the characteristic energy of a degree of freedom in a thermal system {\displaystyle kT}kT, where {\displaystyle T}T is temperature and {\displaystyle k}k is the Boltzmann constant.

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What is the mass of arsenic that is contained in a 50.0 g sample if the concentration is 5 ppm?
faltersainse [42]

<u>Answer:</u> The mass of arsenic found in the sample is 0.25 mg

<u>Explanation:</u>

ppm is the amount of solute (in milligrams) present in kilogram of a solvent. It is also known as parts-per million.

To calculate the ppm of oxygen in sea water, we use the equation:

\text{ppm}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 10^6

Both the masses are in grams.

We are given:

Concentration of arsenic = 5 ppm

Mass of sample = 50 g

Putting values in above equation, we get:

5=\frac{\text{Mass of arsenic}}{50g}\times 10^6\\\\\text{Mass of arsenic}=\frac{5\times 50}{10^6}=0.00025g=0.25mg

<u>Conversion factor used:</u>  1 g = 1000 mg

Hence, the mass of arsenic found in the sample is 0.25 mg

5 0
3 years ago
The temperature at which a substance in the liquid phase transforms to the gaseous phase refers to the substance's _______. A. s
murzikaleks [220]
When a substance goes from being a liquid to a gas it evaporates, or boils away. Think of boiled eggs.
3 0
3 years ago
Read 2 more answers
Compare the costs of using renewable resources to the costs of using nonrenewable resources.
Vitek1552 [10]

Answer:

Sample response:

The costs of using both renewable and nonrenewable resources depend on the extent of the use. If renewable resources are managed wisely, the use of the resource will not exceed the rate at which it is replenished. In this instance the cost of using renewable resources can be minimized, if not entirely eliminated. The cost of using nonrenewable resources is harder to minimize because nonrenewable resources cannot be replenished at the rate at which they are used. The environmental impact of using nonrenewable resources such as fossil fuels is greater than just the loss of the resource itself. Other impacts such as acid rain, global warming, and atmospheric pollution can result from the use of nonrenewable resources.

Explanation:

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8 0
2 years ago
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If I added 50 mL of a 1.0 M HCIO2 solution to 50 mL of a 1.0 M NaOH
kozerog [31]

Answer:

pH=7

Explanation:

0.05 L*1.0M= 0.05 mol HClO2  and 0.05 mol NaOH      

HClO2 +     NaOH ---> NaClO2 + H2O

0.05 mol     0.05 mol

As we can see acid and base  react completely,  solution will be neutral, so pH =7

3 0
3 years ago
When a substance is heated ,the kinetic energy of its molecules
Simora [160]

Answer:

When a substance is heated ,the kinetic energy of its molecules also increase.

Explanation:

K.E is directly proportional to T

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3 years ago
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