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Irina18 [472]
2 years ago
14

(a) Give one function each of the following equipments

Chemistry
1 answer:
igomit [66]2 years ago
4 0

Functions of the following equipment's are-

1. ASPIRATOR  is a  suction machine .It is a  medical device that is primarily used for removing obstructions  such as  mucus, saliva, blood, or secretions — from a person's airway.

2.Beakes  are useful as a reaction container for holding  liquid or solid samples. They are also used for catching liquids from titrations and filtrates from filtering operations.

3. pipettes are used in laboratory to measure out or transfer small quantities of liquid, in volumes of milliliters (mL), microliters (μL).

4. fire tongs are used for holding hot apparatus.

5. test tubes are used for holding solutions and carrying out the reactions.

refer brainly.com/question/24690874

#SPJ2

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26 grams of CO2 to moles
neonofarm [45]
First, find out how many grams are in one mole of CO2(the two oxygen atoms means you need to multiply oxygen’s amu by 2,then add whatever carbon’s amu is to that). Then divide 26 grams by that number and that will be your moles. There are only two significant figures, so round your answer correctly.
4 0
3 years ago
How many mL of 0.715 M HCl is required to neutralize 1.25 grams of sodium carbonate? (producing carbonic acid)
jonny [76]

Answer:

34 mL

Explanation:

We'll begin by calculating the number of mole in 1.25 g of sodium carbonate, Na₂CO₃. This can be obtained as follow:

Mass of Na₂CO₃ = 1.25 g

Molar mass of Na₂CO₃ = (23×2) + 12 + (16×3)

= 46 + 12 + 48

= 106 g/mol

Mole of Na₂CO₃ =?

Mole = mass /molar mass

Mole of Na₂CO₃ = 1.25 / 106

Mole of Na₂CO₃ = 0.012 mole

Next, we shall determine the number of mole HCl needed to react with 0.012 mole of Na₂CO₃.

The equation for the reaction is given below:

Na₂CO₃ + 2HCl —> H₂CO₃ + 2NaCl

From the balanced equation above,

1 mole of Na₂CO₃ reacted with 2 moles of HCl.

Therefore, 0.012 mole of Na₂CO₃ will react with = 0.012 × 2 = 0.024 mole of HCl.

Next, we shall determine the volume of HCl required for the reaction. This is illustrated:

Mole of HCl = 0.024 mole

Molarity of HCl = 0.715 M

Volume of HCl =?

Molarity = mole /Volume

0.715 = 0.024 / volume of HCl

Cross multiply

0.715 × volume of HCl = 0.024

Divide both side by 0.715

Volume of HCl = 0.024 / 0.715

Volume of HCl = 0.034 L

Finally, we shall convert 0.034 L to mL

This can be obtained as follow:

1 L = 1000 mL

Therefore,

0.034 L = 0.034 L × 1000 mL / 1 L

0.034 L = 34 mL

Therefore, 34 mL of HCl is needed for the reaction.

6 0
3 years ago
I NEED HELP PLEASE! :)
Dmitrij [34]

Answer:

Explanation:

SF4 forms a trigonal bipyramidal shape and its molecular shape is that of a "see-saw".

Since sulfur is in 3rd period, it violates the octet rule and has more than 8 electrons accompanying its valence shell.

Here's a picture of lewis structure and electron geometry.

5 0
3 years ago
For the formula shown, how many sulfur atoms are represented?
mash [69]

Answer:

bh

Explanation:

8 0
2 years ago
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If the absolute temperature of a sample of gas in a glass jar is decreased by a factor of two, how would the pressure of the gas
notka56 [123]
<span>Pressure will be cut in half
hope that help good luc</span>
5 0
3 years ago
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