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3 years ago

Which of the following is commonly used as a sacrificial metal?

Chemistry

1 answer:

Phoenix [80]3 years ago

3 0

Answer:

Explanation:

Magnesium.

Magnesium, Zinc and Aluminium are called as Sacrificial Anodes.

They are relatively pure active metals.

the sacrificial anode works by introducing another metal surface with a more negative electronegative and much more anodic surface.

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What percentage of a radioactive species would be found as daughter material after seven half–lives?

irinina [24]

0.78 is what the verified answer says

6 0

3 years ago

Estructura molecular del óxido nitroso

lozanna [386]

Answer:

yes

Explanation:

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2 years ago

Bromine has two isotopes 79Br and 81Br, whose masses (78.9183 and 80.9163 amu) and abundances (50.69% and 49.31%, respectively)

Reika [66]

Answer:

Average atomic mass = 79.9034 amu

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$

Given that:

For first isotope:

% = 50.69 %

Mass = 78.9183 amu

For second isotope:

% = 49.31 %

Mass = 80.9163 amu

Thus,

$Average\ atomic\ mass=\frac{50.69}{100}\times {78.9183}+\frac{49.31}{100}\times {80.9163}\ amu$

$Average\ atomic\ mass=40.0036+39.8998\ amu$

Average atomic mass = 79.9034 amu

4 0

3 years ago

The energy changes in chemical reactions occurs when atoms _____ to form new substances.

Zanzabum

A chemical reaction is marked by new substance formation. The energy changes in chemical reactions occur when atoms rearrange to form new substances.

<h3>What is a chemical reaction?</h3>

A chemical reaction is said to be the process that is characterized by the formation of new substances by the alteration of the chemical composition and the properties of the compound or the molecule.

The reaction results in a new product by the rearrangement of the atoms of the reactant molecule by breaking and creating chemical bonds. The bonds are altered by the change in energy.

Therefore, rearrangement is the correct blank.

Learn more about chemical reactions, here:

brainly.com/question/26690612

#SPJ4

8 0

1 year ago

How do you balance the chemical equation NaOH + H2SO4 > Na2SO4 +H2O

jenyasd209 [6]

Make sure there are the same number of atoms of each element on either side.
1) Check each one.
2) If one's out of balance, alter the equation to balance it and go back to 1)
3) When everything's balanced, you're finished!

We have 1 Na on the left and 2 Na on the right here. We'll need another NaOH to balance it:
2 NaOH + H₂SO₄ > Na₂SO₄ + H₂O
Now O is out of balance. There's 6 on the left and 5 on the right. We'll need more H₂O:
2 NaOH + H₂SO₄ > Na₂SO₄ + 2 H₂O
Fortunately H is in balance. S is also in balance here, so looks like we did it!

Need any more help?

5 0

3 years ago