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Nina [5.8K]
2 years ago
8

What is the source of the energy that causes electrons to be emitted from the surface?.

Chemistry
1 answer:
Pie2 years ago
8 0

Answer:

sunlight

Explanation:

it is the sunlight

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What was boyle’s most famous discovery about gases?
Alexus [3.1K]

Answer:

Boyle's most famous discovery had to do with how the pressure and volume of gases relate, either this or he discovered the volume of a gas decreases with increasing pressure...

Explanation:

...

8 0
2 years ago
What mass of aluminum is required if 40.0 grams of iron (III) oxide is to be completely consumed as
SVETLANKA909090 [29]

Answer:

13.5

Explanation:

Molar mass of Fe2O3 = 2*56 + 16*3 = 112 + 48 =160 approximate value

Number of moles of Fe2O3 = mass/molar mass = 40/160 = 0.25 mol

The reaction is balanced. Fine

1 mol of Fe2O3--------> 2 mol of Al

0.25 mol--------> 0.25*2 = 0.5 mol of Al

Mass of Al required = Number of moles * Molar mass

= 0.5 * 27 = 13.5 g

5 0
3 years ago
Can someone pleas help
bekas [8.4K]

Answer:

Looks like a balloon to me

Explanation:

3 0
3 years ago
What is the volume, in liters, of 13.5 moles of a gas at STP? (STP = 273.15K, 1 atmosphere)
RideAnS [48]

Answer:

302.75 Liters

Explanation:

Given:

P = 1 atm

V = ?

n = 13.5 moles

R = 0.0821 atm x L / mole x K

T = 273.15 K

PV = nRT

(1) (V) = (13.5) (0.0821) (273.15)

V = 302.75 Liters

4 0
2 years ago
Of ozone, molecular oxygen, and oxygen radicals, which is the most stable form of oxygen? How do you know?
PtichkaEL [24]

Oxygen has a strong double bond which has more stability than the single co-ordinate bond in ozone, therefore more energy is required to break the O2 bonding than ozone, so the ozone molecule is more reactive than oxygen gas. ... The oxygen free radical contains two unpaired electrons in its valence shell.

5 0
2 years ago
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