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2 years ago

Is O2 a compound or a molecule?

Chemistry

2 answers:

bija089 [108]2 years ago

7 0

Answer:

Oxygen in the atmosphere is a molecule because it contains molecular bonds. It is not a compound because it is made from atoms of only one element

igor_vitrenko [27]2 years ago

5 0

Answer:

Oxygen is an element. A compound is two or more elements chemically combined. A mixture is two or more elements physically combined (ie. ... Oxygen gas is made of molecules containing only oxygen

Explanation:

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How many molecules are in 120 grams of Na2SO4

brilliants [131]

3.06 × 10^23 molecules

5 0

3 years ago

A student knows that hydrogen (H) atoms and oxygen (O) atoms combine to form water (H2O). The student correctly predicts that hy

marusya05 [52]

Answer:

Explanation:

They both need to lose 2 electrons to form ions

6 0

3 years ago

Copper was the first metal to be produced from its ore because it is the easiest to smelt, that is, to refine by heating in the

Ganezh [65]

Answer:

57.48%

Explanation:

Calculate the mass of 1 mole of malachite:

MM Cu = 63.55

MM O = 16.00

MM H = 1.01

MM C = 12.01

$(Cu_{2}(OH)_{2}CO_{3})$

A mole of malachite has:

2 moles of Cu

5 moles of O

2 moles of H

1 mole of C

MW Malachite = 2*MM(CU) + 5*MM(O) + 2*MM(H) + 1 *MM(C)

MW Malachite = 2*63.55 + 5*16.00 + 2*1.01 + 1*12.01

MW Malachite = 221.13

Mass of Cu in a mole of Malachite = 2*MM(CU) = 127.1

Now divide the mass of Cu by the mass of Malachite

$%Cu = \frac{127.1}{221.13} =0.5748=57.48%$

7 0

3 years ago

Can some one please help me with this organic chemistry question?

const2013 [10]

I think it is gauche.

I know the angle between two atoms in equatorial positions is 60 degrees. and 60 degrees is seen in gauche conformations.

4 0

3 years ago

when carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4g of carbon were burned in the presence of

SpyIntel [72]

Answer: C(s) + O2(g) --> CO2(g)12g (C) .... 50.8g (O2)................. initial amounts0g(C) .........18.8g(O2) ................. amounts when reaction completeThat means that C was the limiting reactant, and the amount of CO2 is based on the amount of carbon that burned. Covert 12 grams of carbon to moles. The moles of CO2 will be the same, since they are in a 1:1 mole ratio. Then convert the moles of CO2 to grams.12g C x (1 mol C / 12.0 g C) x (1 mol CO2 / 1 mol C) x (44.0g CO2 / 1 mol CO2) =44 g of CO2

7 0

2 years ago