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AlladinOne [14]
3 years ago
9

Find the number of each kind of atom2MgO​

Mathematics
2 answers:
ElenaW [278]3 years ago
4 0
2Mg+O squared→2MgO ((when I say squared it means u need to put that little 2 underneath the O if ur still confused I can help u a little more :)
gizmo_the_mogwai [7]3 years ago
3 0

Answer:

2016

Step-by-step explanation:

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Can a triangle have side lengths 3,13, and 7
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No. This is because the two smaller lengths must be greater than the largest length (7+3=10) this is less than 13 meaning the triangle won’t work
6 0
3 years ago
In a triangle, the measure of the first angle is twice the measure of the second angle. The measure of third angle os 88 degrees
Volgvan

Answer:

Answers: 46, 23, and 111

Step-by-step explanation:

To answer, we need to know the angles. Therefore, give each angle a name. Angle 1 will be x, 2 will be y, 3 will be z. So, using this system of equations:

x=2y

z=y+88

x+y+z=180

Substituting, z = 1/2(x)+88, now plug z into the third equation:

x+1/2(x)+1/2(x)+88=180

this simplifies to 2x+88=180

subtracting 88 from both sides leaves 2x=92

x=46

plug this in to the first equation: 46 = 2y, so y = 23

plug this into the third one leaves z = 111

Hope this helps!

3 0
3 years ago
the half-life of isotope X is 2.0 years. How many years would it take for a 4.0mg sample of X to decay and have only 0.50 mg of
shepuryov [24]

After 2.0 years, the 4.0 mg sample decays to 2.0 mg.

After another 2.0 years (total 4.0 years), the 2.0 mg sample decays to 1.0 mg.

And after another 2.0 years (total 6.0 years), the 1.0 mg sample decays to 0.50 mg.

So it takes 6.0 years for 4.0 mg to decay to 0.50 mg.

4 0
3 years ago
First choose which of the following statements are correct. If there is more than one reason why the system is not in echelon fo
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Answer:

D. The system is in echelon form.

Step-by-step explanation:

Check attachment

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Dr. Smith's office is open 8 hours a day. The doctor allows 25 minutes for office
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Step-by-step explanation:

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