2 years ago

PLSS HELP!! 50 POINTS AND BRAINLIEST!!

Chemistry

1 answer:

Vladimir [108]2 years ago

7 0

Answer:

The coloring and possibly testing it

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stich3 [128]

Answer:

the second answer

Explanation:

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2 years ago

49.Which of the following statements regarding chemical equilibrium is true?

crimeas [40]

A asystem at equilibrium stops

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3 years ago

How is a line spectra created from a hot gas? a. photons are emitted when the amount of radioactive material in the gas decrease

fiasKO [112]

Answer:

c when electrons drop down from a high energy level they emit a photon.

Explanation:

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11 months ago

50.0 g of NaNO3 are dissolved into enough water to make 250 mL of solution. What is the molarity of this solution?

d1i1m1o1n [39]

Answer:

2.35 M

Explanation:

Molarity is mol/L of solution. We have to convert the g to mol and the mL to L. G to mol uses the molar mass of the compound. The molar mass of NaNO₃ is 85.00g/mol.

$50.0gNaNO3*\frac{1molNaNO3}{85.00gNaNO3} = 0.588molNaNO3$

Then you have to convert mL to L.

$250mL*\frac{1L}{1000mL} = 0.250L$

Now divide the mol by the L.

$\frac{0.588mol NaNO3}{0.250L} = 2.352 M$

Round to the smallest number of significant figures = 2.35M

7 0

2 years ago

Indicate the FULL NAME and TOTAL NUMBER of each element in the chemical formula provided. *

REY [17]

Answer:

4 lead = Pb

2 nitrogen = N

6 oxygen = O

Explanation:

Know the rules of multiplying wth perentheses.

- Hope that helped! Please let me know if you need further explanation.

6 0

2 years ago