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Anna11 [10]
3 years ago
14

3. After the isotope decays, what is the nucleus called?||

Chemistry
1 answer:
Marat540 [252]3 years ago
7 0

Answer:

Daughter Nucleus

Explanation:

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Oxygen always has an oxidation number of -2 unless it is combined with fluorine or found in the compound peroxide. When in the c
Tpy6a [65]

When oxygen is found is peroxide, it has an oxidation number of -1.

The chemical formula of hydrogen peroxide is H2O2. We know that hydrogen always has +1 oxidation state until it forms metal hydrides. So in H2O2, the oxidation state ofhydrogen is +1.

Now, let oxidation state of oxygen be x. So,

2 * (+1) + 2*x = 0

2 + 2x = 0

2x = -2

x = -2 / 2

x = -1

Hence, the oxidation number of oxygen in peroxides is -1

6 0
3 years ago
which of the following is an electronic device that measures ph? a. a ph meter b. a molarity meter c. a hydroxide meter d. a hyd
NARA [144]
<span>Which of the following is an electronic device that measures pH?

</span><span>a. a pH meter</span>
4 0
3 years ago
What is the average atomic mass of all of the naturally occurring isotopes of nickel in amu?
My name is Ann [436]
In general chemistry, isotopes are substances that belong to one specific element. So, they all have the same atomic numbers. But they only differ in the mass numbers, or the number of protons and neutrons in the nucleus. In a nutshell, they only differ in the number of neutrons.

For Nickel, there are 5 naturally occurring isotopes. Their identities, masses and relative abundance are listed below

  Isotope                Abundance           Atomic Mass
   Ni-58                    68.0769%              <span>57.9353 amu
   Ni-60                    </span>26.2231%              <span>59.9308 amu
   Ni-61                    </span>1.1399 %               <span>60.9311 amu
   Ni-62                    </span>3.6345%                <span>61.9283 amu
   Ni-64                    </span>0.9256%                <span>63.9280 amu

To determine the average atomic mass of Nickel, the equation would be:
Average atomic mass = </span>∑Abundance×Atomic Mass

Using the equation, the answer would be:
Average atomic mass = 57.9353(68.0769%) + 59.9308(26.2231%) + 60.9311(1.1399%) + 61.9283(3.6345%) + 63.9280(0.9256%)

Average atomic mass = 58.6933 amu
3 0
3 years ago
4. milk turning sour
sp2606 [1]
I think it’s a physical
7 0
2 years ago
Read 2 more answers
What is the pOH of a solution that has an H+=7.7x10^-7 M
pentagon [3]

Answer:

Explanation:

Step 1

The question is based on the concept of PH and pOH calculations.

pH is defined as negative logarithmic of hydronium Ion concentration.

while pOH is defined as negative logarithmic of hydroxide ion concentration of the solution.

Step 2

[H+] = 7.7*10-7  M  

pH = -log[H+]  

    = -log ( 7.7*10-7 )

     = 6.12

Step 3

pOH = 14 - pH

   = 14 - 6.11

  = 7.89

4 0
3 years ago
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