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Lunna [17]
3 years ago
12

a solution of prepared by dissolving 20.0 brams of mavni fluride (MgF2) in 80.0 of water (H2O). whag is the mole fraction of mag

nesium fluride in the solution?
Chemistry
1 answer:
Serjik [45]3 years ago
3 0

Answer:

2000.1234 trebuie sa fie asa

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If there was an airplane that went 2,000 miles in 3.5 hours. Find the average speed
jenyasd209 [6]

Answer:

<h3>The answer is 571.43 mi/hr</h3>

Explanation:

The average speed in the question can be found by using the formula

v =  \frac{d}{t}  \\

where

d is the distance

t is the time taken

We have

v =  \frac{2000}{3.5}  \\  = 571.428571...

We have the final answer as

<h3>571.43 mi/hr</h3>

Hope this helps you

3 0
3 years ago
An unknown solution has a pH of 8
Anarel [89]
<h2>Answer:</h2>

Solution is unknown but its PH is indicating that it is a <u>slight Basic solution</u>.

So solution can be sea water or eggs.


6 0
3 years ago
How is total reaction energy calculated? (1 point)
Over [174]

The  total reaction energy calculated by reactant bond energy - product

bond energy

The reactant bond energy is usually higher than that of the product bond

energy. This is as a result of the bonds in the product having higher bond

energy than the reactants.

<h3>What is Total reaction energy?</h3>

The total reaction energy is therefore calculated by subtracting the product

bond energy from the reactant bond energy so as to know the net energy

which was used in the reaction.

Read more about Reaction energy here brainly.com/question/24722308

4 0
3 years ago
PLEASE HELP ME ASAP PLEASE!!!
Sliva [168]

Answer:

\large \boxed{\text{1763 psi}}

Explanation:

We can use Dalton's Law of Partial Pressures:

Each gas in a mixture of gases equals its pressure independently of the other gases

\begin{array}{rcl}p_{\text{NO2}} + p_{\text{CO2}} & = & p_{\text{tot}} \\p_{\text{NO2}} + \text{795 psi} & = &\text{2558 psi}  \\p_{\text{NO2}} & = &\text{2558 psi - 795 psi} \\& = & \textbf{1763 psi}\\\end{array}\\\text{The partial pressure of nitrogen dioxide is $\large \boxed{\textbf{1763 psi}}$}

4 0
3 years ago
Martin slowly pours an unknown liquid into a container that originally had some water in it. He is measuring the temperature in
lora16 [44]
B. a chemical change
8 0
2 years ago
Read 2 more answers
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