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2 years ago

To prevent poisoning, what three items should NEVER be taken into the lab?

Chemistry

1 answer:

Roman55 [17]2 years ago

7 0

The answer of this answer is given in the attached file

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What is the isotope that is formed from the ALPHA decay of Cobalt-57?

Dovator [93]

Nuclide 59Co 57Co
Atomic Mass 58.933 56.936
Natural Abundance 100% 0%
Half Life Stable, non-radioactive 270 days

4 0

2 years ago

Each of the identical volumetric flasks contains the same solution at two different temperatures. There are two identical volume

Montano1993 [528]

Explanation:

We know that molarity is the number of moles of solute present in liter of solution.

Mathematically, Molarity = $\frac{\text{no. of moles}}{\text{volume in liter}}$

As molarity is dependent on volume and volume of a solution or substance is dependent on temperature. So, with increase in temperature there will occur a decrease in volume of the solution. As a result, molarity will increase as it is inversely proportional to volume.

Hence, molarity of both the solutions will be different as temperature of both the solutions is different.

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3 years ago

13. What is the frequency of a wave that has a wavelength of 2.73 x 10-7m?

ella [17]

Answer:

f = 1.09 × 10¹⁵ Hz

Explanation:

Given data:

Frequency of wave = ?

Wavelength of wave = 2.73 ×10⁻⁷ m

Solution:

Formula:

Speed of light = frequency × wavelength

speed of light = 3× 10⁸ m/s

by putting values,

3× 10⁸ m/s = f × 2.73 ×10⁻⁷ m

f = 3× 10⁸ m/s / 2.73 ×10⁻⁷ m

f = 1.09 × 10¹⁵s⁻¹

s⁻¹ = Hz

f = 1.09 × 10¹⁵ Hz

4 0

3 years ago

The reaction of nitrogen monoxide and its rate law are shown below. The concentration of NO is 0.025 M, and the concentration of

DerKrebs [107]

<span>The rate at this temperature for the given concentrations would be..
</span>0.000056 M × s-

4 0

2 years ago

What do we do to increase the surface area of solid reactants to high rate of reaction?

motikmotik

The rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. This is done by cutting the substance into small pieces, or by grinding it into a powder.

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2 years ago