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Kisachek [45]
3 years ago
9

What family on the periodic table has ad least one solid, one liquid and one gas.

Chemistry
1 answer:
const2013 [10]3 years ago
5 0

Answer:

FLUORINE, CHLORINE, BROMINE, IODINE, ASTATILE AND TENNESINE

Explanation :

Florine and chorine=gas

Bromine=liquid

ASTATILE and TENNESINE =solid

HOPE IT is right

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Considering all types of aerosols, what is their net effect on the climate system:
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<span> aerosols are </span><span><span>compressed gases and </span>hydrocarbons, such as nitrous oxide, as propellants. the aerosols are green house gases, that contributes to the heating of the surface of the earth. this is why global warming is one of the greatest environmental problem to date </span>

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3 years ago
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What is the ratio (in the form of a decimal) of the root-mean-square speed of 238UF6 to that of 235UF6 at constant temperature?
NNADVOKAT [17]

Answer:

ratio=0.996m/s

Explanation:

RMS=\sqrt{\frac{3RT}{M} }; M= molecular weight of compound;

RMS speed is inversly proportional to the molecular weight hence compound having less molecular weight will have more rms speed value.

V1 for 238 UF_{6}; M1=238+114=352g/mole

V1 for 235 UF_{6}; M1=238+114=352g/mole

V1=\sqrt{\frac{3RT}{352} };

V2=\sqrt{\frac{3RT}{349} };

\frac{V1}{V2}=ratio of 238UF_{6} F6 to 235UF_{6}=\sqrt{\frac{349}{352} };

\frac{V1}{V2} =0.9957m/s;

\frac{V1}{V2} =0.996m/s;

4 0
3 years ago
How does mechanical advantage help in doing work?
Lostsunrise [7]

Answer:

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  • Mechanical advantage is a measure of the ratio of output force to input force in a system, used to analyze the forces in simple machines like levers and pulleys.

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Explanation:

<h3>Hope it helps you!! </h3>
3 0
2 years ago
What mass of ch4 is consumed when 587. 9 kj of energy is evolved from the combustion of a mixture of ch4(g) and o2(g)? show the
katen-ka-za [31]

Mass of CH₄ is 10.591 g.

The molar mass is a crucial characteristic of the material that is independent of sample size. The coherent unit of molar mass in the International System of Units (SI) is kg/mol. However, molar masses are usually generally given in g/mol due to historical considerations.

A chemical compound's molar mass is calculated by dividing its mass by the number of moles of the substance that make up the sample.

Δg = 587.9 KJ

CH₄ Molar mass = 16.05 g/mol

mol CH₄ = Δg / ΔH°

              = 587.9 / 890.3 KJ/ mol

              = 0.6603 mol CH₄

Mass CH₄ = 0.6603 × 16.05 g/mol

                = 10.591 g

Therefore, the mass of  CH₄ is 10.591 g.

Learn more about molar mass here:

brainly.com/question/24236159

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8 0
1 year ago
Plaster casts, CaSO4 Spell out the full name of the elements in alphabetical order separated by commas.
Olenka [21]
Calcium, oxygen, sulfur
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3 years ago
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