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3 years ago

The mass of the sun what is the mass of the sun

Chemistry

2 answers:

Blizzard [7]3 years ago

8 0

Answer:

1.989 × 10^30 kg

Explanation:

Hope this helps! :3

DanielleElmas [232]3 years ago

7 0

☁️ Answer ☁️

A solar mass is the mass of the sun. Or, more precisely, it's 1.989 x 10^30 kilograms — about 333,000 Earths. Astronomers use a solar mass as a basic unit of mass.

Dear fool, you will always be a fool.

Happy April Fools Day.

Hope it helps.

Have a nice day noona/hyung

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BRAINLIESTTT ASAP!!!! PLEASE HELP ME :)

Elan Coil [88]

Answer:

1s² 2s²2p³

Explanation:

If the atom has seven electrons, it is Element 7 (nitrogen).

In the Periodic Table, you count the electrons in all the subshells up to

No. 7.

In the first Period, you have filled the 1s level (2 electrons).

In the second Period, you have filled the 2s subshell (2 electrons) and put three electrons in the 2p subshell.

Thus, the electron configuration is

1s² 2s²2p³

Note how the superscripts tell you the number of electrons in each subshell: 2 + 2 + 3 = 7.

6 0

3 years ago

Plz answer correctly....The concentration of either the H+ ion or the OH − ion is given for four aqueous solutions at 298 K.?

Rudiy27

Definitions needed:

pH = -log[H^+]

pOH = -log[OH^-]

pH + pOH = 14

[H^+]*[OH^-] = 10^-14

(a) [H+] = 3.0 10-13 M

[OH ‾ ] = _____ M

Acidic, Basic, or Neutral?

[H^+]*[OH^-] = 10^-14

[OH^-] = (10^-14)/[H^+]

[OH^-] = (10^-14)/(3.0 10-13 M) = 0.033 M

That's a high concentration of [OH^-], so the solution is basic

(b) [OH ‾ ] = 3.0 10-7 M

[H+] = ______M

Acidic, Basic, or Neutral?

[H^+]*[OH^-] = 10^-14

[H^+]* = (10^-14)/[OH^-]

[H^+]* = (10^-14)/(3.0 10-7 M) = 3.33 x 10^-8

That would be a slightly basic solution (pH just higher than 7).

4 0

4 years ago

Read 2 more answers

What is the main purpose of using NaOH in the saponification reaction . NaOH works as the catalyst b. NaOH solution is the solve

Alex777 [14]

Answer:

C. NaOH acts as a reactant in the reaction

Explanation:

Because during the saponification process, Na+ replaces the H+ in the fatty acid been used for the saponification process

7 0

4 years ago

If 0.15 mol of I2 vapor can effuses through an opening in a heated vessel in 36 sec, how long will it take 0.15 mol of Cl2 to ef

marysya [2.9K]

Answer: The amount of time required by chlorine gas to effuse is 19 seconds.

Explanation:

Rate of a gas is defined as the amount of gas displaced in a given amount of time.

$\text{Rate}=\frac{n}{t}$

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

$\text{Rate of effusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}$

So,

$\left(\frac{\frac{n_{Cl_2}}{t_{Cl_2}}}{\frac{n_{I_2}}{t_{I_2}}}\right)=\sqrt{\frac{M_{I_2}}{M_{Cl_2}}}$

We are given:

Moles of iodine gas = 0.15 moles

Moles of chlorine gas = 0.15 moles

Time taken by iodine gas = 36 seconds

Molar mass of iodine gas = 254 g/mol

Molar mass of chlorine gas = 71 g/mol

Putting values in above equation, we get:

$\left(\frac{\frac{0.15}{t_{Cl_2}}}{\frac{0.15}{36}}\right)=\sqrt{\frac{254}{71}}\\\\\frac{0.15}{t_{Cl_2}}\times \frac{36}{0.15}=1.89\\\\t=19s$

Hence, the amount of time required by chlorine gas to effuse is 19 seconds.

6 0

3 years ago

Without doing a calculation, arrange the following group of molecules in order of decreasing standard molar entropy (S^o ):

stellarik [79]

Answer:

d. C6H14 > C6H12 > C6H6

Explanation:

Standard molar entropy has to do with the number of atoms that are present in each of the species. The greater the number of atoms possessed by the species, the higher the value of the standard molar entropy due to a greater number of vibration modes.

Hexane (C6H14) has the highest number of atoms followed by cyclohexane (C6H12) and lastly benzene (C6H6).

Thus the order of decreasing molar entropy is; C6H14 > C6H12 > C6H6.

8 0

3 years ago