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2 years ago

What is the reason why an investigation is planned

1 answer:

4 0

It's planned so you know what you are doing during the experiment. If you don't plan something ahead of time then you forget what you need to do. Also you need to remember specific formulas and numbers.

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Fill in the blanks (Balancing chemical reactions) BRAINLIEST

Artemon [7]

$\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}$

The 2 in front of $Na$ in $2Na + Cl_2 \rightarrow 2NaCl$ is Coefficient.

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The $_2$ after $Cl_2$ in the same equation is sub script.

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There are two atoms of $Na$ in $2NaCl$

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$\mathrm{ \#TeeNForeveR}$

7 0

3 years ago

After attending his cousin's birthday party in his backyard, Michael forgot his balloon outside when he went to bed. Overnight,

Vitek1552 [10]

Answer:

See explanation

Explanation:

You see, we must cast our minds back to Charles' law. Charles' law gives the relationship between the volume of a gas and temperature of the gas.

Now, Micheal left the balloon outside at a particular temperature and volume the previous night. Overnight, the temperature dropped significantly and so must the volume of the gas in the balloon!

Remember that Charles' law states that, the volume of a given mass of gas is directly proportional to its absolute temperature at constant pressure. Since the pressure was held constant, the drop in the volume of gas in the balloon can be accounted for by the drop in temperature overnight.

5 0

2 years ago

If a gas is initially at a pressure of 9 atm, a volume of 21 liters, and a temperature of 253 K, and then the pressure is raised

alex41 [277]

Answer:

15.04 mL

Explanation:

Using Ideal gas equation for same mole of gas as

$\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}$

Given ,

V₁ = 21 L

V₂ = ?

P₁ = 9 atm

P₂ = 15 atm

T₁ = 253 K

T₂ = 302 K

Using above equation as:

$\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}$

$\frac {{9}\times {21}}{253}=\frac {{15}\times {V_2}}{302}$

Solving for V₂ , we get:

V₂ = 15.04 mL

3 0

2 years ago

Will give most brainly.

Anna [14]

Answer:

One mole

Explanation:

It tells u the concentration

8 0

2 years ago

Will mark as Brainliest.

Serga [27]

The amount of kinetic energy required for the molecules to break free of the intermolecular forced in the liquid is raised because the other ones don’t make sense

5 0

3 years ago

Read 2 more answers