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iogann1982 [59]
2 years ago
7

If D+2 would react with E!, what do you predict to be the formula?

Chemistry
1 answer:
kherson [118]2 years ago
6 0

Answer:

I think the answers D. Hope this helps you.

Explanation:

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Help?......please???
Flura [38]

Answer:im in middle school in know this but w x y = d

Explanation:so your answer is d :)

5 0
2 years ago
If an oxygen has 1s2 2s2 2p4 , how many more electrons should it have to be octet .
Maru [420]

Answer:

14

Explanation:

8 0
3 years ago
Naomi is investigating the properties of a solid material. It takes 120 joules to raise the temperature of 10 grams of the mater
MrRissso [65]
When heat energy is supplied to a material it can raise the temperature of mass of the material.
Specific heat is the amount of energy required by 1 g of material to raise the temperature by 1 °C.
equation is 
H = mcΔt
H - heat energy 
m - mass of material 
c - specific heat of the material 
Δt - change in temperature
substituting the values in the equation 
120 J = 10 g x c x 5 °C
c = 2.4 Jg⁻¹°C⁻¹
3 0
3 years ago
What mass of oxygen is contained in a 5.8 g sample of NaHCO3?
White raven [17]
Molar mass of NaHCO3 is 83.9. moles of Na...O3= 5.8/83.9
=0.0691
for every mole of Na..O3 there are 3 O
n(O) = n(NaHCO3) x3
        = 0.207
mass of O is the moles x molar mass (16)
therefore the mass of O is 3.3 grams
4 0
3 years ago
An example of a pure substance is ____.
Vsevolod [243]

Answer: e) all of these

Explanation:

Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: Copper

Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: water  (H_2O), carbon dioxide (CO_2)

Mixtures are not pure substances as they consist of elements and compounds combined physically and not in any fixed ratio. Example: Air

Thus all given substances are pure substances.

6 0
3 years ago
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