CHEMISTRY HIGH SCHOOL

Based on bond type, which compound has thehighest melting point?
(1) CH3OH (3) CaCl2
(2) C6H14 (4) CCl4

Answers

Answer 1
Answer: Based on bond type, CaCI2 has the highest melting point.

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A material is ductile, conducts electricity, and is magnetic. The material is a _____. metal nonmetal metalloid impossible to tell

Answers

The answer is metal. Metals are substances generally considered to be good conductors of electricity. They are also considered to be ductile and malleable which means they can be bent or stretched into think wires without breaking. Lastly, some metals like iron, cobalt, and nickel are strongly magnetic. 

the answer your looking for is metal

Which compound has the highest percent composition by mass of strontium?

Answers

Assuming all the compounds of interest are given. We proceed on the theoretical way of answering this question. Assume 1 gram of each compound. Multiply it by the reciprocal of the molar mass of the compound. Then multiply it by the molar ratio of the Strontium to the compound. Then, multiply it by the molar mass of strontium. Finally divide this answer by 1 gram and multiply by 100. 

Chemical changes ________ involve the breaking and making of chemical bonds.A) Always
B) Never
C) Sometimes

Fill in the blank

Answers

The correct answer that would best complete the given statement above would be option A. Chemical changes ALWAYS involve the breaking and making of chemical bonds. When there is chemical change, a new compound is being formed. If a new compound is not formed, then it is not considered as a chemical change. When a new compound is formed, therefore, there is the breaking and making of chemical bonds. Hope this helps.

Answer:

A:  Always.

Explanation:

Got it correct on Oddesyware

Researchers have now been able to cool substances to absolute zero.
a. True
b. False

Answers

Answer:

The correct option is B) false.

Explanation:

Absolute zero is the point where it is not feasible to cool further.

The lowest possible temperature is 0 kelvin which is also known as absolute zero. In degrees its corresponds to –273.15 degrees Celsius.

it is not possible to reach or cool a substance to absolute zero although nearby temperatures can be reached.

Consider the provided statement.

Researchers have now been able to cool substances to absolute zero is a false statement.

The correct option is B) false.
This Answer Is False.

Which rigid cylinder contains the same number of gas molecules at STP as a 2.0-liter rigid cylinder containing H2(g) at STP?(1) 1.0-L cylinder of O2(g)
(2) 2.0-L cylinder of CH4(g)
(3) 1.5-L cylinder of NH3(g)
(4) 4.0-L cylinder of He(g)

Answers

When we say STP that means the system is at its standard temperature and pressure. Both systems is having the same condition hence temperature and pressure is constant. We then set the amount of gas in both cases to be equal. Hence from the ideal gas law, 
PV=nRT we can say that with everything constant, volume must also be constant. 

The answer is (2) 2 L of methane gas. 

2.0-L cylinder of CH₄ (g) contains the same number of gas molecules at STP as a 2.0-liter rigid cylinder containing H₂(g) at STP.

What is ideal gas equation?

It is a hypothetical approximation of the behavior of many gases under many condition, and expressed as PV = nRT.

As in the question it is given that rigid cylinder have the same temperature and pressure i.e. have a standard temperature and pressure. According to the Avogadro's Law, under the same temperature and pressure if equal amount of gas is taken then no. of moles of gases are same.

Ideal gas equation PV = nRT justifies the above statement.

So, from the given 2.0-L cylinder of CH₄ (g) contains the same number of gas molecules at STP.

Hence, option (2) is correct i.e. 2.0-L cylinder of CH₄ (g) contains the same number of gas molecules.

To learn more about ideal gas, visit below link:

brainly.com/question/25290815

3.3 kg aluminum chromate

Answers

this is not a question
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