2 years ago

6. A box measures 11.25 inches in length, 8.1 inches in width and 6.85 inches in height. What is the

Chemistry

1 answer:

denis23 [38]2 years ago

3 0

Answer:

I'd say 624.2^3 inches.

Explanation:

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Magnesium oxide can be made by heating magnesium metal in the presence of oxygen. The balanced equation for the reaction is

Pachacha [2.7K]

$Magnesium+Oxygen-->Magnesium\ Oxide\\\\You\ need\ complement\ factors:\\\\
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3 years ago

In the titration of wine to determine the acid concentration, 10.0 mL of wine was placed in a beaker and diluted with 40.0 mL of

BARSIC [14]

Answer:

0.0042 M is the molarity of tartaric acid in this sample of wine.

Explanation:

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is tartaric acid

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=2\\M_1=?\\V_1=10.0+40.0 mL=50.0 mL\\n_2=1\\M_2=0.051 M M\\V_2=8.20 mL$

Putting values in above equation, we get:

$2\times M_1\times 50.0 mL=1\times 0.051 M\times 8.20 mL$

$M_1=\frac{1\times 0.051 M\times 8.20 mL}{2\times 50.0 mL}=0.0042 M$

0.0042 M is the molarity of tartaric acid in this sample of wine.

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2 years ago

Using the Rydberg equation, calculate the energy for the following electronic transitions in a hydrogen atom and label each as a

Murljashka [212]

Answer:

-1.94 * 10^-18 J

Since the electron moved from a higher to a lower energy level (n = 3 → n = 1) it is an emission.

Explanation:

From Rydberg equation;

E = -RH(1/n^2final - 1/n^2initial)

For a transition from n = 3 → n = 1

RH = 2.18 * 10^-18 J

E = -(2.18 * 10^-18) (1/1^2 - (1/3^2)

E = -(2.18 * 10^-18) (1-1/9)

E= -(2.18 * 10^-18) (8/9)

E = -1.94 * 10^-18 J

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2 years ago

Which of the following is equal to 5,800,000,000 cm?

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Answer:

It would be 5.8 times 10^9cm

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Why is it important that humans (and other animals) maintain a relatively constant body temperature?

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The answer is B. You’re welcome.

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1 year ago

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