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Lera25 [3.4K]
3 years ago
12

The melting points and boiling points of 4 substances are shown.

Chemistry
1 answer:
Serggg [28]3 years ago
4 0

Answer:

it's

C. with melting point 11° C and boiling point 181° C

Explanation:

i hope you got it

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Which of the following organisms would likely be found on a decaying deer carcass (dead deer)?
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Answer:

c. bacteria and fungus

Explanation:

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Mole are in 5.1 grams of beryllium ?
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5.1/9.01 ≈ 0.566 moles
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Write the Ka expression for an aqueous solution of hydrofluoric acid: (Note that either the numerator or denominator may contain
damaskus [11]

Answer:

Ka = ( [H₃O⁺] . [F⁻] ) / [HF]

Explanation:

HF is a weak acid which in water, keeps this equilibrium

HF (aq)  +  H₂O (l)  ⇄  H₃O⁺ (aq)  +  F⁻ (aq)      Ka

2H₂O (l)  ⇄  H₃O⁺ (l)  +  OH⁻ (aq)   Kw

HF is the weak acid

F⁻ is the conjugate stron base

Let's make the expression for K

K = ( [H₃O⁺] . [F⁻] ) / [HF] . [H₂O]

K . [H₂O] = ( [H₃O⁺] . [F⁻] ) / [HF]

K . [H₂O] = Ka

Ka, the acid dissociation constant, includes Kwater.

4 0
3 years ago
a) Provide equation of K of this reaction, use symbol " ^ " for exponents. That means 1000 = 10^3 and 1/100 is 10^(-2). b) How m
stealth61 [152]

Answer and Explanation:

a. The equation of K of this reaction is shown below:-

3 A + 5 B + 4 C↔5 D + 7 E + F

K = \frac{(D)^5 (E)^7 (F)}{(A)^3 (B)^5 (C)^4}

b. The moles of compound F is shown below:-

3 A + 5 B + 4 C↔5 D + 7 E + F

               2 moles

Now, the mole of produced is

= \frac{1}{4} \times \ moles\ of\ c

Now, we will the value of c by using the above equation

= \frac{1}{4} \times 2

After solving the above equation we will get

0.5 moles

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Answer: It depends on her as a person. Given the various ways people give/receive affection(Their love language), it cold vary anywhere from endless compliments all the way to doing nice things for you. Most common, is hanging out a lot and communication as a constant.

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3 years ago
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