All categories

2 years ago

Used to measure an exact volume of liquids

Chemistry

1 answer:

irakobra [83]2 years ago

6 0

Breaker measures a large amount and graduated cylinder measures a small amount

You might be interested in

Chemistry problem, just need an explanation to why this is the answer

ICE Princess25 [194]

Answer:

Filtration

Explanation:

Evaporation could work, but it would take too long and might be harmful to the environment. This is not the answer.

Distillation is used to purify a substance. It is generally only used when separating two liquids. This is not the answer.

Filtration is where you would pour the liquid through a filter and collect the solid. This is the answer.

Chromatography is technique that is used to test whether something is pure. You would not be able to separate the two substances using this technique. This is not the answer.

6 0

2 years ago

A student was titrating the calcium and water solution and notice the formation of bubbles in the flask. which description would

labwork [276]

Hi!

When titrating Calcium and Water solution, if there is some CaCO3 in the solution, the following reactions may occur in acid solution:

CaCO₃ + H⁺ → Ca⁺² + HCO₃⁻

HCO₃⁻ + H⁺ ↔ H₂CO₃ → CO₂ (g) + H₂O

The bubbles are from CO₂ that is being developed from an acidic solution of CaCO₃

4 0

2 years ago

How many number of moles are present in 200. g of sodium bicarbonate (NaHCO3)

nikdorinn [45]

You can solve this problem through dimensional analysis.

First, find the molar mass of NaHCO3.

Na = 22.99 g

H = 1.008 g

C = 12.01 g

O (3) = 16 (3) g

Now, add them all together, you end with with the molar mass of NaHCO3.

22.99 + 1.008 + 12.01 + 16(3) = 84.008 g NaHCO3. This number means that for every mole of NaHCO3, there is 84.008 g NaHCO3. In simpler terms, 1 mole NaHCO3 = 84.008 g NaHCO3.

After finding the molar mass of sodium bicarbonate, now you can use dimensional analysis to solve for the number of moles present in 200. g of sodium bicarbonate.

$200. g NaHCO_3 * \frac{1 mole NaHCO_3}{84.008 g NaHCO_3}$

Cross out the repeating units which are g NaHCO3, and the remaining unit is mole NaHCO3

200. * 1 = 200

200/ 84.008 = 2.38

Notice how there are only 3 sig figs in the answer. This is because the given problem only gave three sig figs.

Your final answer is 2.38 mol NaHCO3.

8 0

2 years ago

Examine the chemical equation Al + O2 Al2O3

AURORKA [14]

I think it is aluminum oxide

5 0

3 years ago

11. What is the maximum number of electrons that an atomic orbital can contain?

Arada [10]

Answer:

Explanation:

Each orbital can hold two electrons. One spin-up and one spin-down.

6 0

3 years ago