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Natali5045456 [20]
4 years ago
9

If Earth was like a hardboiled egg, which part of Earth would the egg shell represent and why?

Chemistry
2 answers:
zzz [600]4 years ago
7 0
I'm thinking its answer choice D. But it might be a good idea to wait and see if someone agrees
Alex777 [14]4 years ago
5 0
I actually had the same question and I was pretty sure the answer was D
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4. Calculate the concentration of NaCl in a solution prepared by diluting 2 mL of 0.05 M NaCl to a total volume of 10 mL with de
Shalnov [3]

Answer:

Molarity of NaCl = Molarity of sodium ions = Molarity of chloride ions = 0.01 M

Explanation:

Considering

Molarity_{diluted\ solution}\times Volume_{diluted\ solution}=Molarity_{stock\ solution}\times Volume_{stock\ solution}

Given  that:

Molarity_{diluted\ solution}=?

Volume_{diluted\ solution}=10\ mL

Volume_{stock\ solution}=2\ mL

Molarity_{stock\ solution}=0.05\ M

So,  

Molarity_{diluted\ solution}\times 10\ mL=0.05\ M\times 2\ mL

Molarity_{diluted\ solution}=0.01\ M

<u>Molarity of NaCl = Molarity of sodium ions = Molarity of chloride ions = 0.01 M</u>

4 0
3 years ago
The graph represents the reaction 2H₂O + 0₂ 2H₂O2 as it reaches
Sergio039 [100]

Answer:

B.) and D.)

Explanation:

A.) is incorrect because the reaction technically never stops if the system remains in tact. Rather, there is just an equal amount of forward and reverse reactions occurring. This means that the overall concentrations of the reactants and products stays the same.

B.) is correct because when the concentrations of the reactants and products remain unchanged, then equilibrium is reached.

C.) in incorrect because, at this point, the concentrations of the reactants are still decreasing and the products are still increasing. If point 2 is specifically referencing the intersection of the lines, this cross symbolizes equal concentrations of the reactants and product. Keep in mind that equal concentrations does not equal equilibrium.

D.) is correct because a reaction moving forward means that mostly product is being created. In other words, the concentration of the product should be increasing. Meanwhile, the concentration of the reactants decrease because they are being used to create the product. As seen in the graph, the product (H₂O₂) is rapidly increasing in concentration. Meanwhile, the concentrations of the reactants (O₂ and H₂O) are decreasing as they would in a forward reaction.

5 0
2 years ago
What is most likely the ph of a solution containing many hydroxide ions (oh-) and few hydrogen ions (h )?
SIZIF [17.4K]
PH of solution will be greater than seven (pH>7), that means that solution is basic (<span>pH above </span>7<span> is a base, the higher the number, the stronger is the base).
</span>pH (potential of hydrogenis) is a measure of the hydrogen ion (H⁺) concentration of a solution. <span>Solutions with a pH less than 7 are acidic.</span>
5 0
3 years ago
A 150 mL of oxygen gas is collected over water at 20 °C and 758 torr. What volume will the same sample of oxygen occupy at STP w
Stella [2.4K]

Answer:

The volume would be; 136.17 ml

Explanation:

Volume V1 = 150 mL

Temperature T1 = 20°C + 273 = 293 K

Pressure  P1 = 758 - 17.54 = 740.46 torr

At STP;

Volume V2 = ?

Pressure P2 = 760 torr

Temperature T2 = 273 K

Using the general gas equation;

P1V1 / T1   = P2V2 / T2

Making V2 subject of formulae;

V2 = P1V1T2 / T1P2

Inserting the values we have;

V2 = 740.46 * 150 * 273  /  293 * 760

V2 = 136.17 ml

3 0
3 years ago
Choose all the correct answers.
adoni [48]
Mercury Jupiter Mars
4 0
3 years ago
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