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laiz [17]
3 years ago
15

Write the chemical equation for the reaction between magnesium and oxygen.

Chemistry
1 answer:
OleMash [197]3 years ago
8 0

Answer:

2 x Mg, 2 x O products: 2 x Mg, 2 x O

not balanced

PLSS MARK BRAINLIEST

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PLS HELPPP How many moles of oxygen atoms (not molecules) are present in 6.41×1025 molecules of dinitrogen pentoxide (N2O5)? 1.
olga55 [171]

Answer:

(4) 266 moles

Explanation:

We have Dinitrogen Pentoxide N2O5

6.41*10^25 molecules are given

No of Moles of N2O5 = \frac{No of Molecules }{Avogadro's Number}

                                     = \frac{6.41 * 10^25}{6.022*10^23}

                                      = 106.5 mol

Now using Unitary Method

2 Mole of Nitrogen pentoxide require 5 mole of Oxygen to form N2O5

1 mole of N = \frac{5}{2}*O

In 106.5 mole of N  = \frac{5}{2}*106.5 = 266.25 mole

So, 6.41*10^25 molecules of N2O5 will require 266.25 mole of Oxygen atoms.

5 0
3 years ago
Various metals are essential for human health. One such example is iron. Insufficient amounts of iron can lead to anemia, causin
Genrish500 [490]

The density of the patient's hemoglobin in their blood in units of g/ml = 0.2g/mL

<h3>Calculation of hemoglobin density</h3>

Hemoglobin is the red blood cell pigment that transports oxygen to the body cells.

1 gram of hemoglobin = 2.15mg

Blood volume of the patient is = 4.9ml

Density= mass/volume

Therefore the density of patients hemoglobin= 1/4.9 = 0.2g/mL

Learn more about hemoglobin here:

brainly.com/question/8197071

5 0
2 years ago
What do I write? Please hurry
avanturin [10]

Answer:

I'd say Water

Explanation:

The plant absorbs more water through the roots not sure if i'm correct.

<h3 />
4 0
3 years ago
How is making an apple pie different from making lead iodide
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The end result is somewhat less likely to give you heavy metal poisoning in the case of apple pie.
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What are the coefficients to balance the following equation?<br> ba+br=babr2
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1 ba+2 br——>1 babr2

u just have to make sure u have the same number of each type of atom on either side of the equation:)
8 0
3 years ago
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