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ladessa [460]
2 years ago
11

The following equation is an example of a ______________ reaction. 2 NaCl + F2 → 2 NaF + Cl2 ???

Chemistry
1 answer:
olga55 [171]2 years ago
3 0

Answer:

double replacement is the answer

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Answer:

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Explanation:

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2 years ago
Explain how a scanning electron microscope (SEM) can be used in combination with an energy dispersive X-ray spectrometer (EDS) t
vfiekz [6]

Answer:

SEM provides detailed high resolution images of the sample by rastering a focussed electron beam across the surface and detecting secondary or backscattered electron signal. An Energy Dispersive X-Ray Analyzer (EDX or EDA) is also used to provide elemental identification and quantitative compositional information.

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3 years ago
Why are measurements important for science?<br> Give two reasons.<br> Please help meeee :(
stepladder [879]

Answer:

-Being in the service of quality, safety, designing and problem solving.

-It plays an importnat part in our lives too, to measure any surface, object, etc.

Explanation:

Measurement is perhaps one of the most fundamental concepts in science. Without the ability to measure, it would be difficult for scientists to conduct experiments or form theories.

4 0
2 years ago
A sample of N2 gas is contaminated with a gas (A) of unknown molar mass. The partial pressure of each gas is known to be 200 tor
Tju [1.3M]

Answer: The molar mass of gas A is 1.75 g/mol

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of effusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

So,

\frac{\text{Rate}_A}{\text{Rate}_{N_2}}=\sqrt{\frac{M_{N_2}}{M_{A}}}

We are given:

Molar mass of nitrogen gas = 28 g/mol

Molar mass of A gas = ? g/mol

Putting values in above equation, we get:

\frac{\text{Rate}_A}{\text{Rate}_{N_2}}=\sqrt{\frac{28}{M_{A}}}\\4=\sqrt{\frac{28}{M_{A}}}

M_{A}=1.75g/mol

Thus molar mass of gas A is 1.75 g/mol

7 0
3 years ago
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2 years ago
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