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2 years ago

Need the answer ASAP

Chemistry

1 answer:

wolverine [178]2 years ago

8 0

Answer:

Explanation:

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Help me (number 5).

olga55 [171]

Answer:

a. HF

Explanation:

6 0

2 years ago

A pound of margarine costs $1.39. What is the cost of a kilogram of margarine

den301095 [7]

Answer:

3.064 $

Solution:

First of all we will find the number of pounds contained by one Kg. Therefore, it is found that,

1 Kilogram = 2.20462 Pounds

Hence, as given,

1 Pound of Margarine costs = 1.39 Dollars

So,

2.20462 Pounds Margarine will cost = X Dollars

Solving for X,

X = (2.20462 Pounds × 1.39 Dollars) ÷ 1 Pound

X = 3.064 Dollars

8 0

2 years ago

Hydroxyl radicals react with and eliminate many atmospheric pollutants. However, the hydroxyl radical does not clean up everythi

Nesterboy [21]

Answer:

ΔHreaction = 263.15 kJ/mol

Explanation:

The reaction is as follow:

OH + CF₂Cl₂ → HOF + CFCl₂

You need to calculate the enthalpy of reaction and for this it is necessary to know the standard enthalpies for each of the compounds. These enthalpies are as follows and can be found in your textbook or on the Internet.

ΔHreaction = ∑ΔHproducts - ∑ΔHreactants

$delta(H)_{reaction} =((1*(-97.8)+(1*(-92))-((1*39)+(1*(-491.15))=263.15kJ/mol$

7 0

2 years ago

Can you please answer Question 9 please

MissTica

The answer is C because I kno

6 0

3 years ago

Convert a density of 7.2 g/ml into the unit kg/L

aivan3 [116]

Unit conversion is a multi-step process, in which division or multiplication by a numeral factor is involved.

Density = $7.2 g/mL$ (given)

Since, $1 g = 0.001 kg$ and

$1 mL = 0.001 L$

Now, converting $7.2 g/mL$ to $kg/L$ :

$7.2 \frac{g}{mL}\times \frac{1 kg}{1000 g}\times \frac{1000 mL}{1 L}$

= $7.2 kg/L$ .

Hence, density is $7.2 kg/L$ .

6 0

3 years ago

Need the answer ASAP ​

Need the answer ASAP