All categories

3 years ago

What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common?

Chemistry

2 answers:

gavmur [86]3 years ago

6 0

Answer:

A. Their numbers of atoms

Explanation:

RUDIKE [14]3 years ago

5 0

The answer is A , their number of atoms

You might be interested in

What is the change in boiling point for a 0.615m solution of Mgl2 in water?

ivanzaharov [21]

Answer : The change in boiling point is, $0.94^oC$

Explanation :

Formula used :

$\Delta T_b=i\times K_f\times m$

where,

$\Delta T_b$ = change in boiling point = ?

i = Van't Hoff factor = 3 (for MgI₂ electrolyte)

$K_f$ = boiling point constant for water = $0.51^oC/m$

m = molality = 0.615 m

Now put all the given values in this formula, we get

$\Delta T_b=3\times (0.51^oC/m)\times 0.615m$

$\Delta T_b=0.94^oC$

Therefore, the change in boiling point is, $0.94^oC$

4 0

3 years ago

Estimate the standard internal energy of formation of liquid methyl acetate (methyl ethanoate, ch3cooch3) at 298 k from its stan

LenKa [72]

solution:

$the reaction for formation of methyl acetate is\\CH_{3}OH+CH_{3}COOH----------->CH_{3}COOCH_{3}+H_{2}O\\standard internal energy \\\delta u=\delta H -\delta(pv)=\delta H -\delta n\times RT\\where \delta n=change in number of moles=0\\\delta u=\delta H\\=-442kj/mol$

6 0

3 years ago

Read 2 more answers

Water vapor also enters the atmosphere through —————(2 words), which takes place in many cells and produces water and carbon dio

yawa3891 [41]

Answer:

It is photosynthesis and transpiration 

hope it helps

8 0

3 years ago

Three highways connect the centers of three towns and form a triangle. A cell phone company wants to place a new cell tower so t

EastWind [94]

This is only possible when the triangle that is formed by the 3 towns is an equilateral triangle, so that the center will have the same distance in each town. Assuming an equilateral triangle, the center is at 1/3 of the height of the equilateral triangle

4 0

3 years ago

If a machine decreases the distance an object moves, it must also _____.

mart [117]

increase the force needed to move the object

Explanation:

If a machine decreases the distance an object moves, it must also increase the force need to move the object.

A machine is a device that is used to do work with a little energy input.

Work done = force x distance

We see that to do more work, a lot of force must be applied to move a body through a greater distance.

If the distance is reduced;

Distance = $\frac{Work done {force}$

More force must be applied to measure up for the distance and make the machine more efficient.

learn more:

Work done brainly.com/question/9100769

#learnwithBrainly

3 0

3 years ago