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Anna [14]
3 years ago
13

Which of these is a compound? A)air Boxygen C)carbon dioxide D)carbon

Chemistry
2 answers:
Katen [24]3 years ago
7 0
The answer is C because for a compound carbon and dioxide mixed together is also hard to see in the periodic table even thou yes its a part of thing
Snezhnost [94]3 years ago
6 0
The answer would be C. carbon dioxide.
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Complete combustion of 2.0 metric tons of coal to gaseous carbon dioxide releases 6.6X10¹⁰ J of heat. Convert this energy to
Jobisdone [24]

6.6 × 10^{10} J = 6.2 × 10^{7} British thermal units

First of all, we should know that 1 British thermal unit = 1055 Joules.

From question, heat = 6.6 × 10^{10} J

1 BTU = 1055 J

6.6 × 10^{10} J = \frac{1}{1055} ×  6.6 × 10^{10} British thermal units

                   = 6.2 × 10^{7} British thermal units

1000 Joules = 1 kilojoule

A kilojoule is a unit of measure of energy, in the equal way that kilometers degree distance. meals energy used to be measured in energy  and some international locations still use those gadgets.

The power we get from foods and drinks is measured in kilojoules. that is the metric time period for calorie. Kilojoules and energy constitute the equal aspect. One calorie is ready four kilojoules.

Calorie a unit for measuring warmth same to the quantity of warmth required to elevate the temperature of one gram of water one diploma Celsius.

Learn more about kilojoules here :- brainly.com/question/490326

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4 0
1 year ago
What information do we need to determine the molecular formula of a compound from the empirical formula?
defon

Answer:

Molecular mass

Explanation:

Molecular formulas is the actual number of atoms of each element in the compound while empirical formulas is the simplest or reduced ratio of the elements in the compound.

Thus,  

Molecular mass = n × Empirical mass

Where, n is any positive number from 1, 2, 3...

Thus if the molecular mass is known, then we can find the value of n which results to molecular formula.

6 0
3 years ago
*click photo* <br><br> Tysm if you answer!
STALIN [3.7K]

Answer: False

Explanation:

AC change directions and DC only flow in one direction

4 0
3 years ago
Read 2 more answers
How many liters of hydrogen are required to react completely with 2.4L of oxygen to form water? 2H2 + O2 --&gt; 2H2O
RoseWind [281]

Answer:

2.4 mole of oxygen will react with 2.4 moles of hydrogen

Explanation:

As we know

1 liter = 1000 grams

2H2 + O2 --> 2H2O

Weight of H2 molecule = 2.016 g/mol

Weight of water = 18.01 gram /l

2 mole of oxygen react with 2 mole of H2

2.4 mole of oxygen will react with 2.4 moles of hydrogen

3 0
2 years ago
Does bacteria need water to live
Aleks [24]
No. bacteria only needs food to live along with other special needs depending on the type of bacteria
6 0
3 years ago
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