. Never start a job without knowing the _ and ____ of the chemicals you are working with.

Chemistry

2 answers:

pashok25 [27]3 years ago

8 0

Location,types that is your answer for this one hope i helped

LiRa [457]3 years ago

7 0

Answer:

Explanation:

the blanks will be properties and hazard

Working on chemicals can be a dangerous job so before working on chemicals we should have all the knowledge of the chemicals properties.

And also while working on the chemical you should also have the knowledge of the hazard caused by the chemicals.

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A sample of hydrogen gas, has a volume of 8.56 L at a temperature 0oC and pressure of 1.5 atm. Calculate the number of moles of

erica [24]

P = 1.5atm ≈ 1519.88hPa
V = 8.56L
R = 83.1 [hPa*L] / [mol*K]
T = 0°C =273K

pV = nRT |:RT

n = pV / RT

n = [1519.88hPa*8.56L] / [83.1 [hPa*L] / [mol*K] * 273K]
n ≈ 0.57mol

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3 years ago

2. Stronger intermolecular forces =______ boiling point

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Stronger intermolecular forces = higher boiling point

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3 years ago

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dlinn [17]

The wave-mechanical model of the atom is required to explain the spectra of elements with multi electron atoms.

Explanation:

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Based on many assumptions, scientists began to guess as accurately as possible about the behaviour of electrons at different energy levels around the nucleus. Because all electrons are negatively charged, they tend to push their elbows when they are too close together, moving away and changing direction. Each plane has one or more orbits that have more than one electrons that move around the nucleus in a specific patterns or shape.

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A chemist dissolves 716.mg of pure potassium hydroxide in enough water to make up 130.mL of solution. Calculate the pH of the so

Natasha_Volkova [10]

Answer: The pH of the solution is 13.0

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$