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3 years ago

10

Explain why or why not it’s necessary for the scientific process to always follow the same route

1 answer:

miss Akunina [59]3 years ago

6 0

Answer:

Explanation:

The scientific method describes the processes by which scientists gain knowledge about the world. It's characterized by six key elements: questions, hypotheses, experiments, observations, analyses, and conclusions. These elements are interrelated steps, so they don't always function in the same order.

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Wich is not a characteristic common to all minerals

ahrayia [7]

Metallic luster is not a characteristic common to all minerals.

7 0

4 years ago

3C6H206<br> How many atoms are there? Help ASAP!

Vaselesa [24]

Answer:

the answer to this is 74 :)

4 0

3 years ago

If a gas’s [kelvin] temperature doubles and it’s volume then remains the same, then what happens to it’s pressure?

Tamiku [17]

Answer:

The final pressure will double i.e it will be twice the initial pressure

Explanation:

T1 = T

T2 = 2T ( twice the original T)

P1 = P

P2 =?

Since the volume is constant,

P1/ T1 = P2 /T2

P/ T = P2 / 2T

Cross multiply

T x P2 = 2T x P

Divide both side by T

P2 = (2T x P) / T

P2 = 2P

Therefore, the final pressure will double i.e it will be twice the initial pressure

5 0

4 years ago

The sulfur content of an ore is determined gravimetrically by reacting the ore with concentrated nitric acid and potassium chlor

katen-ka-za [31]

Answer:

13.92 %

Explanation:

Mass of $BaSO_4$ = 12.5221 g

Molar mass of $BaSO_4$ = 233.43 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{12.5221\ g}{233.43\ g/mol}$

Moles of $BaSO_4$ = 0.0536 moles

According to the given reaction,

$Ba^{2+}_{(aq)}+SO_4^{2-}_{(aq)}\rightarrow BaSO_4_{(s)}$

1 mole of $BaSO_4$ is formed from 1 mole of $SO_4^{2-}$

Thus,

0.0536 moles of $BaSO_4$ is formed from 0.0536 moles of $SO_4^{2-}$

Moles of $SO_4^{2-}$ = 0.0536 moles

Moles of sulfur in 1 mole $SO_4^{2-}$ = 1 mole

Moles of sulfur in 0.0536 mole $SO_4^{2-}$ = 0.0536 mole

Molar mass of sulfur = 32.065 g/mol

Mass = Moles * Molar mass = 0.0536 * 32.065 g = 1.7187 g

Mass of ore = 12.3430 g

Mass % = $\frac{Mass\ of\ Sulfur}{Mass_{ore}}\times 100$ = $\frac{1.7187}{12.3430}\times 100$ = 13.92 %

3 0

4 years ago

4. Substances that existed before mixing-still exist-after substances-are-mixed----

pantera1 [17]

False; Because when 2 substances are mixed another substance is created.

5 0

3 years ago