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garri49 [273]
4 years ago
9

16. Leo has 279 comic books in his collection. He puts 34 comic books in each box. About how many boxes of comic books does Leo

have?
A 6
B 11
C 9
D 5​
Chemistry
1 answer:
m_a_m_a [10]4 years ago
4 0

Answer:C:9

Explanation:

279/34=8.205≈ 9

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ddd [48]

Answer:D the pressure increases

Explanation:

6 0
3 years ago
The compound trimethylamine, (CH3)3N, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr
GREYUIT [131]

Answer:

The K_b expression for the weak base equilibrium is:

K_b=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}

Explanation:

(CH_3)_3N(aq)+H_2O(l)\rightlefharpoons (CH_3)_3NH^++OH^-(aq)

The expression of the equilibrium constant of base K_c can be given as:

K_c=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N][H_2O]}

]K_b=K_c\times [H_2O]=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}

As we know, water is pure solvent, we can put [H_2O]=1

K_b=K_c\times 1=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}

So, the the K_b expression for the weak base equilibrium  is:

K_b=\frac{[(CH_3)_3NH^+][OH^-]}{[(CH_3)_3N]}

6 0
3 years ago
I'm doing a adopt a element project and I need a slogan for bismuth please tell me a good one
trapecia [35]

Bismuth, it’s elemental!

Bismuth, Agent 83

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I like you more than Bismuth

Bismuth, we love you

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Bi Bro

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http://www.bestslogans.com/list-ideas-taglines/periodic-table-bismuth-slogans/


https://sloganshub.org/bismuth-slogans/

6 0
3 years ago
Reactivity and flammability are are examples of properties.​
nika2105 [10]

Answer:

they are eamples of chemical properties

Explanation:

flammibility is the chemical makeup of the element that makes it flamable and reactivitie is the chemical makeup of an element that is able to reacte to another element

3 0
3 years ago
What is the name of group 6a,7a,and 8a
vodka [1.7K]

Answer:

Refering to Chemistry,

The Group names are:

Group 6A: Chalcogens

Group 7A: Halogens

Group 8A: Noble/Inert Gasses

8 0
3 years ago
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