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Free_Kalibri [48]
3 years ago
5

Reaction B could produce a substance with a pH of... 14. 4. 10. 7.

Chemistry
2 answers:
Marta_Voda [28]3 years ago
7 0

14?i think...Explanation:

scoundrel [369]3 years ago
4 0

Answer:

Explanation:

14: Sodium Hydroxide

4: lemon juice.

10: milk of magnesia ; The great Salt Lake

7: pure water

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the hcp ordered 0.2 mg of methylergonovine, and the vial contains 0.8 mg/ml. how many ml of methylergonovine should the nurse dr
olasank [31]

The volume (in mL) of methylergonovine the nurse should draw up in the syringeis is 0.25 mL

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the concept of density, we can obtain the volume of methylergonovine. Details below

<h3>How to determine the volume </h3>

The following data were obtained from the question:

  • Mass of methylergonovine = 0.2 mg
  • Density of methylergonovine = 0.8 mg/mL
  • Volume of methylergonovine =?

Density = mass / volume

Cross multiply

Density × volume = mass

Divide both sides by density

Volume = mass / density

Volume = 0.2 / 0.8

Volume of methylergonovine = 0.25 mL

Learn more about density:

brainly.com/question/952755

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8 0
2 years ago
Particles of Substance X are dispersed in water to form a colloid. Which describes the electrical charges on the particles of Su
Novay_Z [31]

The correct answer is option A.

All the particles carry the same charge, which could be either positive or negative.

All the particles of substance X will have same charge on its surface, which is balanced by the oppositely charged ions in the water.

For example, soap solution (sodium palmitate) dissociates into ions:

C₁₅H₁₁COONa --> C₁₅H₁₁COO⁻ + Na⁺

The cations (Na⁺) passes into the water while the anions (C₁₅H₁₁COO⁻) form aggregates or colloids.

3 0
3 years ago
Which greenhouse gas is emitted when people burn fossil fuels for energy?
Volgvan
It would be carbon dioxide because carbon dioxide makes up the vast majority of greenhouse gas .
5 0
3 years ago
Calculate the number of moles of O2 gas held in a sealed 2.00 L tank at 3.50 atm and 25 ℃.
Leviafan [203]

Answer:

n=0.286mol

Explanation:

Hello,

In this case, we consider oxygen as an ideal gas, for that reason, we use yhe ideal gas equation to compute the moles based on:

PV=nRT\\\\n=\frac{PV}{RT}

Hence, at 3.50 atm and 25 °C for a volume of 2.00 L we compute the moles considering absolute temperature in Kelvins:

n=\frac{3.50atm*2.00L}{0.082\frac{atm*L}{mol*K}(25+273)K} \\\\n=0.286mol

Best regards.

6 0
3 years ago
What is saturated solution and how it is prepared
Dimas [21]
Hope my answer helped you
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3 years ago
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