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erastova [34]
3 years ago
13

PLEASE HELP ME I NEED IT TO BRING MY GRADE UP

Chemistry
1 answer:
svet-max [94.6K]3 years ago
4 0

Answer:

the attached file

Explanation:

The potassium is an alkali metal which explode in water to produce base and hydrogen gas.  The balancing came from the fact that each side needed the same number of hydrogens so I made the products have 4 (the lowest even number) then put the appropriate coefficients in the reactants to make that work.  Since there are two molecules of potassium hydroxide there also needed to be 2 atoms of potassium in the reactants.  

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I need some help with chemistry. Let me know if you are good at it!
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3 0
3 years ago
For each of the following compounds, identify what type of bonding holds them together.
svet-max [94.6K]

Explanation

NaCl:  Ionic crystal lattice forces

Hg:   Metallic bonding

CO₂:  London dispersion forces

CH₄:  London dispersion forces

Li₂O:  Ionic crystal lattice forces

Ag:  Metallic bonds

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4 0
3 years ago
During free fall which object would have a greater acceleration, an object with a mass of 240 kg or an object with a mass of 10
inna [77]

Answer:

Leroy Jeakins

Explanation:

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5 0
3 years ago
A vial containing radioactive selenium-75 has an activity of 3.0 mCi/mL. If 2.6 mCi are required for a leukemia test, how many m
oksian1 [2.3K]

Answer : The 866.66\mu L must be administered.

Solution :

As we are given that a vial containing radioactive selenium-75 has an activity of 3.0mCi/mL.

As, 3.0 mCi radioactive selenium-75 present in 1 ml

So, 2.6 mCi radioactive selenium-75 present in \frac{2.6mCi}{3.0mCi}\times 1ml=0.86666ml\times 1000=866.66\mu L

Conversion :

(1ml=1000\mu L)

Therefore, the 866.66\mu L must be administered.

4 0
3 years ago
The symbol for the hydroxide ion is _____. <br> H +<br> H 3O - <br> H(OH) <br> OH -
erastova [34]
Your answer is D, OH-.
8 0
4 years ago
Read 2 more answers
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