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3 years ago

How many moles of al would be produced from 10 moles of al2o3? (not balanced al2o3 ? al + o2?

Chemistry

1 answer:

Alenkinab [10]3 years ago

3 0

20 moles of Al would be produced from the balanced equation and 10 moles of Al2O3

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The structural formula for CF4 is

nevsk [136]

Answer:

PubChem CID 6393

Structure

Find Similar Structures

Chemical Safety

Compressed Gas

Laboratory Chemical Safety Summary (LCSS) Datasheet

Molecular Formula CF4

Molecular Weight

88.004 g/mol

Explanation:

5 0

3 years ago

Read 2 more answers

A 100 W light bulb is placed in a cylinder equipped with a moveable piston. The light bulb is turned on for 2.0×10−2 hour, and t

drek231 [11]

Answer:

(a) ΔU = 7.2x10²

(b) W = -5.1x10²

(c) q = 5.2x10²

Explanation:

From the definition of power (p), we have:

$p = \frac {\Delta W}{\Delta t} = \frac {\Delta U}{\Delta t}$ (1)

where, p: is power (J/s = W (watt)) W: is work = ΔU (J) and t: is time (s)

(a) We can calculate the energy (ΔU) using equation (1):

$\Delta U = p \cdot \Delta t = 100 \frac{J}{s} \cdot 2.0\cdot 10^{-2} h \cdot \frac{3600s}{1h} = 7.2 \cdot 10^{2} J$

(b) The work is related to pressure and volume by:

$\Delta W = -p \Delta V$

where p: pressure and ΔV: change in volume = V final - V initial

$\Delta W = - p \cdot (V_{fin} - V_{ini}) = - 1.0 atm (5.88L - 0.85L) = - 5.03 L \cdot atm \cdot \frac{101.33J}{1 L\cdot atm} = -5.1 \cdot 10^{2} J$

(c) By the definition of Energy, we can calculate q:

$\Delta U = \Delta W + \Delta q$

where Δq: is the heat transfer

$\Delta q = \Delta U - \Delta W = 7.2 J - (-5.1 \cdot 10^{2} J) = 5.2 \cdot 10^{2} J$

I hope it helps you!

6 0

3 years ago

What human made mechanisms are responsible for increasing the rate of global warming??

Natali [406]

Cars, aeroplanes, factories etc

6 0

3 years ago

6. Which of the following is an electrical hazard?

Lorico [155]

I believe the answer is C because the first two are mechanical hazards and C mentions plug which is electrical.

3 0

2 years ago

Substance in which two or more elements are combined in a fixed proportion

Firdavs [7]

Answer: compound

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 $Cu$

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 $H_2O$

Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Example: Air

8 0

3 years ago