3 years ago

A 2.87 g sample of carbon reacts with hydrogen to form 3.59 g of car fuel. What is the empirical formula of the car fuel?

Chemistry

1 answer:

koban [17]3 years ago

5 0

This is the Answer:

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In the reaction 2Mg (s) + O2 (g) + 2H2O (l) → 2Mg2+ (aq) + 4OH– (aq), how many electrons are transferred?

Mekhanik [1.2K]

F. None of the above (Four electrons are transferred).

2Mg → 2Mg^(2+) + 4e^(-)

O_2 + 2H_2O + 4e^(-) → 4OH^(-)

2Mg + O_2 + 2H_2O + 4e^(-) → 2Mg^(2+) + 4OH^(-) + 4e^(-)

2Mg + O_2 + 2H_2O → 2Mg^(2+) + 4OH^(-)

This is a redox reaction in which two atoms of Mg transfer four electrons to one molecule of O_2.

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3 years ago

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there are 1540 megawatts of wind-generated electricity produced globally every year. This amount is equivalent to how many kilow

Reptile [31]

1.54 x 10⁶kW

Explanation:

The problem here is converting from megawatts into kilowatts.

Given 1540megawatts.

The mega- and kilo- watts are prefixes that denotes multiples of units.

1 megawatt = 10⁶watts

1 kilowatt = 10³watts

Now given 1540megawatts power to Kilowatt power;

We see that :

1000kW = 1mW

1540mW x $\frac{1000kW}{1mW}$ = 1.54 x 10⁶kW

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irinina [24]

Answer:

1, 4, 2 & 7 respectively

Explanation:

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Silver is a white metal that is an excellent conductor of heat and electricity. The density of silver is 10.49 g/cm3. Silver doe

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C. The density of silver is 10.49 g/cm3

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Which element is a solid at STP and a good conductor of electricity?

vodomira [7]

(3) Nickel, being a transition metal, is a good conductor of electricity and is solid at STP.

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