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MissTica
3 years ago
10

The properties of a rectangular prism are listed below.

Chemistry
1 answer:
VARVARA [1.3K]3 years ago
8 0

Answer:

20 g/cm3 I got this because 120 divided by 6 is 20

Explanation:

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At stp,a certain mass of gas occupies a volume of 790cm3. find the temperature at which the gas occupies 1000cm3 amd has a press
Luden [163]

The temperature : 332.75 K

<h3>Further explanation</h3>

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

volume of gas = 790 cm³ = 0.79 L

mol of gas at STP :

\tt \dfrac{0.79}{22.4}=0.035

Use ideal gas :

\tt PV=nRT

P=726 mmHg=0.955 atm

V= 1000 cm³ = 1 L

\tt T=\dfrac{PV}{nR}\\\\T=\dfrac{0.955\times 1}{0.035\times 0.082}\\\\T=332.75~K

3 0
3 years ago
Explain why the law of conservation of energy can mean that we do not have unlimited sources of energy.
oee [108]
<span>The law of conservation of energy states that energy can neither be created nor destroyed - it can only be converted from one form to another. It basically means that energy can't just appear, but has to be converted from existing energy; for example, the chemical energy in petrol is turned into electrical energy to power a car.Remember the total energy of universe is constant,,and no more energy can be drawn from out if we collect all universe's energy at a single point(its the big bang energy splitted during </span>
5 0
3 years ago
How are magnetic objects able to be
Vadim26 [7]

Answer:

Explorations include static electricity, magnets, electromagnets and permanent magnets.  Examples of cause and effect relationships could include how the distance between objects affects strength of the force and how the orientation of magnets affects the direction of the magnetic force.

Explanation:

4 0
3 years ago
How many molecules are in 0.25 moles of CH4
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The base gram of the compound is 16.042

To find the new amount of grams, you need to multiply the amount of moles by the the base grams

16.042*.25=4.01

So one fourth of the compound is 4.01 grams of Carbon tetrahydride.
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3 years ago
Which of these is a result of selective breeding? A. apples coming in many different varieties B. fish being able to breathe thr
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The correct answer is A. apples coming in many different varieties.
This is because people who grow apples mix different kinds of apples in order to produce new ones, which means they are selecting the qualities they want the new apple to have in order to get the best results. B, C, and D are incorrect because that is the normal behavior or appearance of these animals - there is nothing extraordinary about them that was created thanks to selective breeding..
3 0
3 years ago
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