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labwork [276]
3 years ago
6

I will give brainliest!!! In the reaction represented by the equation Al2O3 -> Al + O2, what is the mole ratio of aluminum to

oxygen?
Chemistry
1 answer:
Effectus [21]3 years ago
7 0

Answer:;

4:3

Explanation:

Balanced:

4Al + 302 yields 2al2O3

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A gas sample has an original volume of 760 ml when collected at 700 mm and 40oC. If a change is made in the gas temperature whic
alexandr1967 [171]

Answer:

235k

Explanation:

To solve this problem, we will use the general gas equation.

In its simplest form, the general gas equation can be represented as follows:

P1V1/T1 = P2V2/T2

P1 = 700mmHg

V1 = 760ml

T1 = 40 degrees Celsius = 40 + 273.15 = 313.15K ( conversion into standard temperature unit)

P2 = 1.25 atm

We have to covert this into the same unit as the first pressure.

760mmHg = 1atm

x mmHg = 1.25 atm

x = 1.25 * 760 = 950mmHg

V2 = 420ml

T2 = ?

Now, rearranging the equation will yield:

T2 = P2V2T1/P1V1

T2 = 950 * 420 * 313.5/700 * 760

T2 = 235.125K or -38.025 degrees celcius

6 0
3 years ago
Do you think flowers are important to mankind? If yes explain why in your own words please
weeeeeb [17]

Answer:

Purity, power, and selflessness are all symbols associated with the flower. They aspire to lead the entire human species along the noble road. The receiver feels calmed and uplifted by the sight of lovely fresh flowers, which is why they have had a particular position in human history from ancient times.

7 0
2 years ago
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How many valence electrons does chlorine have ?​
Alex73 [517]

Answer:

I believe the answer is 7

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Using John daltons method, what's the ratio of the chemical compound of Salt - NaC1
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I think the answer is 1921045
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3 years ago
450 ml of a 2.00 M solution is diluted to a new volume of 1000 ml. Calculate the final molarity.
MA_775_DIABLO [31]

Answer: 0.9M

Explanation: C1V1 = C2V2

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3 years ago
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