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ipn [44]
3 years ago
12

List 3 Metals in the periodic table.

Chemistry
2 answers:
musickatia [10]3 years ago
6 0
Chromium , silver, zinc...
OLga [1]3 years ago
5 0

Answer:

NUMBER SYMBOL ELEMENT

3 Li Lithium

4 Be Beryllium

11 Na Sodium

12 Mg Magnesium

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You have 41.6 g of O2 gas in a container with twice the volume as one with CO2 gas in another container. The pressure and temper
prisoha [69]

Answer:

The mass of carbon dioxide is 28.6 grams

Explanation:

<u>Step 1:</u> Data given

Mass of O2 = 41.6 grams

Volume of the O2 container = 2V

Volume of the CO2 container = V

Pressure and temperature are the same

<u><em>Step 2:</em></u> Ideal gas law

The ideal gas law = p*V=nRT

For O2: p*2V = n(O2)*R*T

For CO2: p*V = n(CO2)*R*T

n(O2)*R*T / P*2V = n(CO2)*R*T / P*V

Since P, R and T are contstant, we can simplify this to:

n(O2)/2 = n(CO2)

<u>Step 3:</u>  Calculate moles of O2

Moles O2 = mass O2/ Molar mass O2

Moles O2 = 41.6 grams / 32 g/mol

Moles O2 = 1.3 mol O2

The number of moles CO2 = 0.65 mol

Mass of CO2 = Moles CO2 * Molar Mass CO2

Mass of CO2 = 0.65 mol * 44.01 g/mol

Mass of CO2 = 28.6 grams

The mass of carbon dioxide is 28.6 grams

5 0
4 years ago
Why does food have potential energy?
Savatey [412]

Answer:

So that if we feel weak, energy is released through it so we can do work and do stuff like walk or think. It's like stored energy that can do things for the future.

Please give brainliest if it helped.

3 0
3 years ago
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!!!Please Hurry:'))!!! The National Severe Storms Laboratory has created a computer program that simulates a thunderstorm. A loc
svetlana [45]

Answer: The study has too many uncontrollable variables.

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If water was used to rinse the burette used to dispense the hydrochloric acid solution, how would this affect
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Answer:

The concentration of hydrochloric acid would be estimated to be less.

Explanation:

This is because, the hydroxyl ions from water react with the hydrogen ions from the hydrochloric acid, hence decreasing the moles of hydrogen ions which lowers the acidic strength of Hydrochloric acid.

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3 years ago
Which statement is generally true about CaCaI2 ?
erica [24]

Explanation:

"<em>Its bonds are formed by large differences in electronegativity" is the statement among the choices given in the question that is generally true about CaCl2.</em>

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3 years ago
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