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3 years ago

If something is made of atoms it must be what?

2 answers:

4 0

The answer would be matter.

That is because anything that has mass and takes up space it matter. Also, atoms are the basic unit of all living things. EVERYTHING is made up of atoms.

Aneli [31]3 years ago

3 0

It must be made of matter because anything and everything is made up of atoms. The other three options are made of atoms but they are also matter.

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Please help me find the potential energy and explain

Kaylis [27]

Answer:

PE ( Potential Energy ) = Mass x Gravity x Height

Explanation:

For the first one you would do.

.28 ( mass) x 9.8 ( constant of gravity ) x .40m ( height )

So just multiply your Mass, Gravity and Height together and you will get Potential Energy

Gravity is always 9.8 m/s

8 0

3 years ago

Read 2 more answers

IF A CAPPED GLASS BOTTLE IS THROWN INTO A FIRE, WHAT WILL HAPPEN TO THE BOTTLE AND WHY?

ArbitrLikvidat [17]

Answer:

it will explode (not intensely) there is some oxygen in the bottle so the cap would pop off violently, the longer it stays in the fire the more energy is being pent up.

Explanation:

8 0

3 years ago

Read 2 more answers

Which element has the smallest atomic radius? calcium potassium scandium titanium

Alex787 [66]

The element that has the smallest atomic radius is titanium

explanation

Calcium,potassium, scandium and titanium are in period 4 in the periodic table.

Generally the atomic radius decreases across the period (from the left to the right) . This is because across the period there is increase in nuclear charge which make electrons been strongly attracted to the nuclear.

Titanium is in atomic number 22 thus it has more nuclear charge that calcium,potassium and scandium therefore titanium has the smallest atomic radius.

8 0

3 years ago

Read 2 more answers

The Haber process can be used to produce ammonia (NH3) from hydrogen gas (H2) and nitrogen gas (N2). The balanced equation for t

kotykmax [81]

Answer:

Explanation:

We are given that ammonia can be produced from hydrogen gas and nitrogen gas according to the equation:

$\displaystyle 3\text{H$_2$} + \text{N$_2$} \longrightarrow 2\text{NH$_3$}$

We want to determine the mass of hydrogen gas that must have reacted if 0.575 g of NH₃ was produced.

To do so, we can convert from grams of NH₃ to moles of NH₃, moles of NH₃ to moles of H₂, and moles of H₂ to grams of H₂.

We are given that the molar masses of NH₃ and H₂ are 17.03 g/mol and 2.0158 g/mol, respectively.

From the equation, we can see that two moles of NH₃ is produced from every three moles of H₂.

With the initial value, perform dimensional analysis:

$\displaystyle \begin{aligned} 0.575\text{ g NH$_3$}& \cdot \frac{1\text{ mol NH$_3$}}{17.03\text{ g NH$_3$}} \cdot\frac{3\text{ mol H$_2$}}{2\text{ mol NH$_3$}} \cdot \frac{2.0158\text{ g H$_2$}}{1\text{ mol H$_2$}} \\ \\ & = 0.102\text{ g H$_2$}\end{aligned}$

*Assuming 100% efficiency.

Our final answer should have three significant figures. (The first term has three, the second term has four (the one is exact), the third term is exact, and the fourth term has five. Hence, the product should have only three.)

In conclusion, our answer is B.

3 0

3 years ago

What type of energy is associated with random motion of the particles in a sample of gas

alex41 [277]

Thermal energy or kinetic energy .

3 0

3 years ago