Ask question

Ask question

All categories

3 years ago

10

What year will Aquarius be visible from Earth’s North Pole?

1 answer:

Minchanka [31]3 years ago

3 0

Answer:

Aquarius beginning in the mid-3rd millennium. The north and south celestial poles are the two imaginary points in the sky where the Earth's ... In about 5,500 years, the pole will have moved near the position of the star ... The south celestial pole is visible only from the Southern Hemisphere.

Explanation:

You might be interested in

Explain why beryllium is produced when potassium is heated with beryllium

Vladimir [108]

Explanation:

The more reactive element replaces less reactive element during chemical reaction.

Since, potassium is more reactive than beryllium. When potassium reacts with beryllium choride, it replaces beryllium and forms potassium chloride and produces beryllium.

3 0

2 years ago

A change of matter is a physical change <br>True or False

kodGreya [7K]

Answer:

true

Explanation:

hope it helps

8 0

2 years ago

Read 2 more answers

What is the volume of 82 g of water.

trasher [3.6K]

Answer:

?

Explanation:

can you describe the question a little more please?

4 0

3 years ago

The equilibrium constant, Kc, for the following reaction is 5.10×10-6 at 548 K. NH4Cl(s) NH3(g) + HCl(g) Calculate the equilibri

levacccp [35]

<u>Answer:</u> The equilibrium concentration of HCl is $2.26\times 10^{-3}M$

<u>Explanation:</u>

We are given:

Moles of $NH_4Cl(s)$ = 0.564 moles

Volume of vessel = 1.00 L

Molarity is calculated by using the equation:

$\text{Molarity}=\frac{\text{Number of moles}}{\text{Volume of solution (in L)}}$

Molarity of $NH_4Cl=\frac{0.564}{1}=0.564M$

The given chemical equation follows:

$NH_4Cl(s)\rightleftharpoons NH_3(g)+HCl(g)$

<u>Initial:</u> 0.564

<u>At eqllm:</u> 0.564-x x x

The expression of $K_c$ for above equation follows:

$K_c=[NH_3][HCl]$

The concentration of pure solid and pure liquid is taken as 1.

We are given:

$K_c=5.10\times 10^{-6}$

Putting values in above equation, we get:

$5.10\times 10^{-6}=x\times x\\\\x=2.26\times 10^{-3}M,-2.26\times 10^{-3}M$

Negative sign is neglected because concentration cannot be negative.

So, $[HCl]=2.26\times 10^{-3}M$

Hence, the equilibrium concentration of HCl is $2.26\times 10^{-3}M$

5 0

3 years ago

Riley is scootering down the street before they come to a stop at a stop

11111nata11111 [884]

Answer:

just subrracted them and find out whats m

Explanation:

6 0

3 years ago