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adelina 88 [10]
3 years ago
9

Which of the following is a nonmetal?a.iron b. silver c. oxygen d. copper

Chemistry
1 answer:
goldenfox [79]3 years ago
6 0
Oxygen because we couldn't use oxygen for the human body if it had metal in it.
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What is the IUPAC name of the following compounds i. CO₂ ii. NO₂ iii. HNO3 iv. H₂SO4 v. K-Cr₂O vi. [Fe(CN)
Zielflug [23.3K]

Explanation:

I) carbon dioxide

ii) nitrogen dioxide

iii) nitric acid

iv) sulphric acid

v) Potassium dichromate

vi) hexacyanoferrate (III) ion( not sure)

8 0
2 years ago
Determine the correct name for the compound, Mg3N2. A) Manganese nitride B) Magnesium nitride Eliminate C) Magnesium (II) nitrid
kotegsom [21]

Magnesium Nitride, :)

4 0
3 years ago
Read 2 more answers
What is indicated by 'A' in the figure below? A. -VE B. +Ea C. -Ea D. +VE
makkiz [27]

Answer:

+VE

Explanation:

If we look at the reaction profile pictured in the question, we can easily identify A as the enthalpy of the reaction. The enthalpy of reaction (ΔHrxn) is usually defined as the difference between the total enthalpy (heat content) of the products of a reaction and the total enthalpy (heat content) of the reactants in that reaction.

Looking at the figure, we can see that the enthalpy of products is greater than the enthalpy of reactants, hence ∆Hrxn is positive as stated in the answer above.

6 0
3 years ago
What is the pH of a solution with a hydrogen ion concentration of 4.5 x<br> 10-6 M ?
Fittoniya [83]

Answer:

<h2>5.35 </h2>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ {H}^{+} ]

We have

pH =  -  log(4.5 \times  {10}^{ - 6} )  \\  = 5.346787...

We have the final answer as

<h3>5.35 </h3>

Hope this helps you

6 0
2 years ago
How many grams of hydrogen reacts with 32 g of oxygen to produce 34 g of hydrogen peroxide
nordsb [41]

Answer:

2 grams.

Explanation:

H2 + O2 --->  H2O2

Using molar masses:

2*1 g hydrogen   reacts with 2*16  g oxygen.

so 2g H2 reacts with 32 g O2.

8 0
2 years ago
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