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3 years ago

11

hoose the best word or phrase to complete each sentence. 1.is a financial service that offers a kind of in the event of unforese

en damage, injury, or cost. 2.A is the cost of a type of insurance that is paid at regular intervals.

2 answers:

alex41 [277]3 years ago

8 0

Medical Insurance and Premium are the answers to your questions.

frosja888 [35]3 years ago

3 0

protection

Insurance

premium

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Chemical equations

Alenkasestr [34]

I believe it is B writing chemical formulas

7 0

3 years ago

Read 2 more answers

The electron cloud of HF is smaller than that of F2, however, HF has a much higher boiling point than F2 has. Which of the follo

mafiozo [28]

Answer:D

Explanation:

The high boiling point of HF is not attributable to the dispersion forces mentioned in the question. In HF, a stronger attraction is in operation, that is hydrogen bonding. This ultimately accounts for the high boiling point and not solely the dispersion model as in F2.

7 0

3 years ago

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0144 0.0144 M solution. The pH of the resulting solution i

alexdok [17]

Answer:

The value of dissociation constant of the monoprotic acid is $1.099\times 10^{-3}$ .

Explanation:

The pH of the solution = 2.46

$pH=-\log[H^+]$

$2.46=-\log[H^+]$

$[H^+]=0.003467 M$

$HA\rightleftharpoons H^++A^-$

Initially

0.0144 0 0

At equilibrium

(0.0144-x) x x

The expression if an dissociation constant is given by :

$K_a=\frac{[A^-][H^+]}{[HA]}$

$K_a=\frac{x\times x}{(0.0144-x)}$

$x=[H^+]=0.003467 M$

$K_a=\frac{0.003467 \times 0.003467 }{(0.0144-0.003467 )}$

$K_a=1.099\times 10^{-3}$

The value of dissociation constant of the monoprotic acid is $1.099\times 10^{-3}$ .

3 0

4 years ago

What is the term for the number of protons in the nucleus of each atom of an element?

xxTIMURxx [149]

Answer:

atomic number

Explanation:

atomic number is the number of protons

5 0

2 years ago

Calculate in gramm the mass of 0.1 mole of hydrochloric acid(h=1 ,cl=35.5)

babunello [35]

Answer:

mass of HCl = 3.65 g

Explanation:

Data Given:

Moles of hydrochloric acid HCl = 0.1 mole

Mass in grams of hydrochloric acid HCl = ?

Solution:

Mole Formula

no. of moles = Mass in grams / molar mass

To find Mass in grams rearrange the above Formula

Mass in grams = no. of moles x molar mass . . . . . . . (1)

Molar mass of HCl = 1 + 35.5 = 36.5 g/mol

Put values in equation 1

Mass in grams = 0.1 mole x 36.5 g/mol

Mass in grams = 3.65 g

mass of HCl = 3.65 g

6 0

3 years ago