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horsena [70]
2 years ago
15

Which characteristic will the animal in the image pass on to its offspring Help me out please

Chemistry
1 answer:
Rina8888 [55]2 years ago
5 0

Answer:

Sea turtle

Is the animal in the image

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The molarity of a solution containing 7.1 g of sodium sulfate in 100 mL of an aqueous solution is
Sergio [31]

Answer:

0.5 M

Explanation:

First we have to start with the <u>molarity equation</u>:

M=\frac{mol}{L}

We need to know the<u> amount of moles and the litters</u>.

If we have 100 mL we can convert this value to “L”, so:

100~mL\frac{1~L}{1000~mL}

0.1~ L

Now we can continue with the moles, for this we have to know the <u>formula of sodium sulfate</u> Na_2SO_4, with this formula we can <u>calculate the molar mass</u> if we know the atomic mass of each atom on the formula (Na: 23 g/mol, S: 32 g/mol, O: 16 g/mol). We have to multiply each atomic mass by the amount of atoms in the formula, so:

molar~ mass~=~ (23*2)+(32*1)+(16*4)= ~ 142~ g/mol

In other words:

1~mol~ Na_2SO_4=~142~g~ of~Na_2SO_4

Now we can <u>calculate the moles</u>:

7.1~g~ of~Na_2SO_4\frac{1~mol~ Na_2SO_4}{142~g~ of~Na_2SO_4}

0.05~mol~ Na_2SO_4

Finally, we can <u>calculate the molarity:</u>

M=\frac{0.05~mol~ Na_2SO_4 }{0.1~ L}

M=0.5

I hope it helps!

4 0
3 years ago
Read 2 more answers
Please answer this question
ZanzabumX [31]

Answer:

Is the fixed number of water molecules present in one formula unit of a substance

Explanation:

When copper sulphate is heated in a china dish, the blue colomed crystal changes to a white powder due to the removal of molecules of water of crystallization

6 0
3 years ago
Enter an equation showing how this buffer neutralizes added aqueous acid (HI). Express your answer as a chemical equation. Ident
andrey2020 [161]

Answer:

H^++NH_3\rightleftharpoons NH_4^+

Explanation:

Hello there!

In this case, since the buffer is not given, we assume it is based off ammonia, it means the ammonia-ammonium buffer, whereas the ammonia is the weak base and the ammonium ion stands for the conjugate acid. In such a way, when adding HI to the solution, the base of the buffer, NH3, reacts with the former to promote the following chemical reaction:

H^++NH_3\rightleftharpoons NH_4^+

Because the HI is totally ionized in solution so the iodide ion becomes an spectator one.

Best regards!

5 0
3 years ago
A 1300 mL sample of gas with a molar mass of 71.0 g/mol at STP has what density?
Blizzard [7]

Answer:

0.055g/mL

Explanation:

Data obtained from the question include:

Molar Mass of the gass sample = 71g/mol

Volume of the gas sample = 1300 mL

Density =?

The density of a substance is simply mass per unit volume. It is represented mathematically as:

Density = Mass /volume.

With the above equation, we can easily obtain the density of sample of gas as illustrated below:

Density = 71g / 1300 mL

Density = 0.055g/mL

Therefore, the density of the gas sample is 0.055g/mL

6 0
3 years ago
What is a chemical change of a juicy burger and a waffle fry
devlian [24]

there needs to be more info

6 0
2 years ago
Read 2 more answers
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