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pantera1 [17]
3 years ago
12

Which metal element is most reactive Beryllium, magnesium, calcium, or strontium

Chemistry
2 answers:
Rudiy273 years ago
4 0
I think the answer is magnesium. I hope this helps!
777dan777 [17]3 years ago
3 0

Answer:

Magnesium I’m pretty sure

Explanation:

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Macromolecules aren't sticking with me. I need to memorize the basic and complex sugars.
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Answer:

Sugar is a food/spice. Macromolecules are the tiniest molecules if i was right. I do'nt know whether it is right. Happy to help...

Explanation:

3 0
2 years ago
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An analysis of a sugar compound is found to contain 132 grams of carbon (C), 22 grams of hydrogen (H), and 176 grams of oxygen (
ddd [48]
132 g of C  ,   22 g of H   , 176 g of O

132 + 22 + 176 => 330 g <span>of the substance

</span>Now convert the masses in <span>moles :
</span>
C = 12.0 u        H = 1.0 u       O = 16.0 u

C = 132 / 12.0 => 11 moles

H = 22 / 1.0 => 22 moles

O = 176 / 16.0 => 11 moles

Using the values obtained the lowest proportion in mols of elements present, simply divide the values found for the least of them<span>:
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C = 11 / 11 => 1

H = 22 / 11 => 2

O = 11 / 11 => 1

 formula empirically <span>is : CH</span>₂O

hope this helps!


8 0
3 years ago
The isotope carbon-14 has 6 protons and an atomic mass of 14. Carbon-14 has:
Aleks [24]
Carbon has 7 neutrons

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5 0
3 years ago
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The process of_ causes rock to change compostion when reacting with oxgen
satela [25.4K]
Rusting causes rocks with metals in them to corrode and have changed compositions. The oxygen in the moisture in the air causes rock to rust. 
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3 years ago
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My barometer is reading 1253 torr. What is the pressure in mmHg?
kobusy [5.1K]

Answer:

The pressure in mmHg is 1253 (option C)

Explanation:

Two quantities are directly proportional if when multiplying or dividing one of them by a number, the other is multiplied or divided by that number. In other words, the magnitudes are directly proportional when one magnitude increases and so does the other in the same proportion; or when one magnitude decreases and so does the other in the same proportion.

The rule of three or is a way of solving proportionality problems between three known values ​​and an unknown value, which can be applied to directly proportional quantities as follows:

a ⇒ b

c ⇒ x

So x=\frac{c*b}{a}

where a, b and c are data and x is the unknown value to be calculated.

In this case, knowing that 1 Torr = 1 mmHg, the rule of three can be applied as follows: if 1 torr is equal to 1 mmHg, 1253 torr is equal to how many mmHg?

pressure=\frac{1253 torr*1 mmHg}{1 torr}

pressure= 1253 mmHg

<u><em>The pressure in mmHg is 1253 (option C)</em></u>

6 0
3 years ago
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