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nikklg [1K]
4 years ago
10

Pretend your friend was absent from class today...

Chemistry
2 answers:
NemiM [27]4 years ago
7 0
Incomplete question
Dovator [93]4 years ago
5 0

Answer:

how and why elements what?? why they exist?? im gonna assume that's what you meant, so elements exist because we're all on earth and without elements, we don't have resources to live. the earth is made of elements and if there were none, we wouldn't even have a planet

Explanation:

^

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Because of the law of motion there are no limits on how fast the roller coaster can go true or false.
Lelechka [254]

Answer False

Explanation: Friction makes it stop at some point. For it to have an unlimited speed goes against beset is first law that states an object in motion with stay in motion unless acted upon by an external force, your force will be the friction of the wheels on the roller coaster

7 0
3 years ago
Based on the given description which is most likely a mixture
suter [353]

Answer:

what descriptions

Explanation:

6 0
3 years ago
Calculate the mass of 29.6 L of fluorine gas at STP.
Lunna [17]

Answer:

Mass = 25.08 g

Explanation:

Given data:

Volume of fluorine = 29.6 L

Temperature = standard = 273.15 K

Pressure = standard = 1 atm

Mass of fluorine = ?

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

n = PV/RT

n = 1 atm × 29.6 L / 0.0821 atm.L/ mol.K × 273.15 K

n = 1.32 mol

Mass of fluorine:

Mass = number of moles × molar mass

Mass = 1.32 mol ×19 g/mol

Mass = 25.08 g

7 0
3 years ago
Which factor is likely to impact the possible number of compounds?
frozen [14]

Answer:

Presence of unlimited number of elements in the periodic table The inability of atoms to align perfectly with other atoms The ability of all elements to react with every other element All elements being equally reactive.

6 0
3 years ago
What happens to the number of carbon atoms in each compound?
katrin [286]
The think that happens to the number of carbon atoms in each compound is that they increase by 1
4 0
3 years ago
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