2 years ago

In an investigation that uses the scientific method, which step immediately follows asking a question?

Chemistry

2 answers:

IceJOKER [234]2 years ago

7 0

Answer:

creating a hypothesis.

Explanation:

you need to have a hypothesis to then start designing the exp.

Debora [2.8K]2 years ago

4 0

Answer:

its c)creating a hypothesis.

Explanation:

just took quiz

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Round to the nearest whole number of 99.59

Luden [163]

Answer is 100.00!!!

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3 years ago

Calculate the pressure of 2.50 Liters of a gas at 25.0oC if it has a volume of 4.50 Liters at

MariettaO [177]

Answer:

P_2 =0.51 atm

Explanation:

Given that:

Volume (V1) = 2.50 L

Temperature (T1) = 298 K

Volume (V2) = 4.50 L

at standard temperature and pressure;

Pressure (P1) = 1 atm

Temperature (T2) = 273 K

Pressure P2 = ??

Using combined gas law:

$\dfrac{P_1V_1}{T_1} = \dfrac{P_2V_2}{T_2} \\ \\ \dfrac{1 *2.5}{298} = \dfrac{P_2*4.5}{273}$

$0.008389261745 \times 273 = 4.5P_2$

$P_2 =\dfrac{0.008389261745 \times 273 }{4.5}$

$P_2 =0.51 \ atm$

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2 years ago

What is true about the number of water particles in the pot after the water has been warmed?

Elza [17]

Answer:ye

Explanation:

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3 years ago

What are the symbols (in order) for hydrogen, sodium and nitrogen?

Ulleksa [173]

Answer:

H, Na, N

Explanation:

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2 years ago

Read 2 more answers

What is the mass of 5 moles of Fe2(CO3)3 ?

sineoko [7]

Answer:

1218.585

Explanation:

Looking at the subscripts we know there are 2 atoms of Fe, 3 atoms of C, and 6 of O.

Take the molar mass of each atom (from the periodic table) and multiply by the # of atoms

Fe: 55.845×2= 111.69

C: 12.011×3= 36.033

O:15.999×6=95.994

Add the values together: 243.717 g/mol

That is 1 mole of the molecule. Multiply by 5 for the final answer.

243.717×5=1218.585

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2 years ago