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viktelen [127]
2 years ago
13

How many moles of oxygen atoms are present in 5 H20

Chemistry
2 answers:
mars1129 [50]2 years ago
8 0
It’s 5 because you have 5 H2O and in one H2O there is only 1 so obviously 5 x 1 = 5 so it is 5 moles
Vlad1618 [11]2 years ago
4 0

Answer:

1 i guess thats all i could do sorry not to good at math i probs got this wrong

Explanation:

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use the periodic table to select the element from the drop-down menu that has the correct relative electronegativity.
Bumek [7]
You need to list the elements but remember that fluorine has the highest electronegativity out of the entire periodic table
6 0
2 years ago
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Which will cause an increase in the reaction rate between molecules?
Mariana [72]
I think it's B. Molecules collide more frequently
3 0
3 years ago
A chemist needs to make 250 mL of a 2.50 M aqueous solution of ammonium hydroxide from a 6.00 M ammonium hydroxide solution. How
Furkat [3]

Answer:

250 mL (total solution)  = 104 mL (stock solution)  + 146 mL (water)

Explanation:

Data Given

M1 = 6.00 M

M2 = 2.5 M

V1 = 250 mL

V2 = ?

Solution:

As the chemist needs to prepare 250 mL of solution from 6.00 M ammonium hydroxide solution to prepare a 2.50 M aqueous solution of ammonium hydroxide.

Now

first he have to determine the amount of ammonium hydroxide solution that will be taken from6.00 M ammonium hydroxide solution

For this Purpose we use the following formula

                    M1V1=M2V2

Put values from given data in the formula

                   6 x V1 = 2.5 x 250

Rearrange the equation

                   V1 = 2.5 x 250 /6

                    V1 = 104 mL

So 104 mL is the volume of the solution which we have to take from the 6.00 M ammonium hydroxide solution to prepare 2.5 M  aqueous solution of ammonium hydroxide

But we have to prepare 250 mL of the solution.

so the chemist will take 104 mL from 6.00 M ammonium hydroxide solution and have to add 146 mL water to make 250 mL of new solution.

in this question you have to tell about the amount of water that is 146 mL

250 mL (total solution)  = 104 mL (stock solution)  + 146 mL (water)

7 0
3 years ago
Which of the following is an example of an abiotic factor? A wind factor B Human C bacterium D duck
solmaris [256]
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7 0
2 years ago
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Breeder reactors are used to convert the nonfissionable nuclide U-238 to a fissionable product. Neutron capture by the U-238 is
m_a_m_a [10]

Answer:

Pu-239

Explanation:

Beta decay moves the element which undergoes the decay one place to the right in the periodic table since to conserve charge and being beta radiations an  electron we convert a neutron into a proton and an electron. In neutron capture we increase the atomic mas by one unit. We that in mind, lets solve the question:

U-238 + ₁⁰ n ⇒ U-239 ⇒ Np -239 +  ₋₁⁰β ⇒ Pu-239 +  ₋₁⁰β

7 0
3 years ago
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