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2 years ago

12

Explain why a potassium atom would not bond with a calcium atom?

1 answer:

docker41 [41]2 years ago

6 0

Answer:

Calcium atoms have smaller radii than potassium atoms since calcium atoms have a greater nuclear charge. Each calcium atom will be closer to the delocalized electrons. Thus, the bonds in calcium will be stronger than that in potassium.

Explanation:

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Suppose you put a whole antacid tablet in one glass of water and a crushed antacid tablet in another glass containing the same a

iogann1982 [59]

The crushed tablets would stop bubbling/fuzzing first because it has a smaller surface area which means that it would dissolve before the uncrushed tablets which has a larger surface area.

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3 years ago

Balanced equation for the equation between zinc and acetic acid

eduard

Zn(s) + 2CH3COOH(aq) → (CH3COO)2Zn(aq) + H2(g)<span>
</span>

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3 years ago

Based on percent ionic character the bond between Al & Br would be classified as

Brut [27]

Answer: I think it's A

Explanation:

8 0

3 years ago

Nuclear decay is a first-order kinetics process. What is the half-life of a radioactive isotope if it takes 233 minutes for the

-BARSIC- [3]

<u>Answer:</u> The half life of the given radioactive isotope is 43.86 minutes

<u>Explanation:</u>

Rate law expression for first order kinetics is given by the equation:

$k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}$

where,

k = rate constant = ?

t = time taken for decay process = 233 minutes

$[A_o]$ = initial amount of the reactant = 0.500 M

[A] = amount left after decay process = 0.0125 M

Putting values in above equation, we get:

$k=\frac{2.303}{233}\log\frac{0.500}{0.0125}\\\\k=0.0158min^{-1}$

The equation used to calculate half life for first order kinetics:

$t_{1/2}=\frac{0.693}{k}$

where,

$t_{1/2}$ = half-life of the reaction = ?

k = rate constant = $0.0158min^{-1}$

Putting values in above equation, we get:

$t_{1/2}=\frac{0.693}{0.0158min^{-1}}=43.86min$

Hence, the half life of the given radioactive isotope is 43.86 minutes

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3 years ago

How many molecules are there in 322 grams of Cu(NO3)2

mr_godi [17]

<span>cu=1*63g=63g
n=2*14g=28g
o=6*16g=96g
total=187g/mol
122(1 mol/187)(6.02*10^23)= 3.92*10^23 </span><span>
</span>

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3 years ago