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Katarina [22]
3 years ago
5

Radioactive nuclei can emit alpha, beta or gamma radiation.

Chemistry
1 answer:
Mama L [17]3 years ago
5 0

Gamma radiation is the most penetrating. It can penetrate air, paper or thin metal. It may only be stopped by many centimetres of lead or many metres of concrete.

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Tems11 [23]

Answer:

Volume occupied by 55.5 moles of water gas at STP = 1240 Liters.

Explanation:

1st keep in mind that 'volume' in the context of problems like this apply only to the gas phase form of the substance. Water in solid form (ice) or liquid form (liquid water) do not apply. Volume in this case is referred to as 'molar volume' and is a gas occupying 22.4 liters at STP conditions (0°C, 1Atm).

So, if 1 molar volume of water gas (steam) occupies 22.4 Liters at STP, then 55.5 moles of water gas occupies 22.4 Liters/mole x 55.5 moles = 1243.2 Liters, or 1240 Liters (3 sig. figs.).   :-)

4 0
3 years ago
A car travelling at 20km per hour emits about 0.0750kg of carbon monoxide per kilometre. How many mole of carbon monoxide are em
natta225 [31]

Answer:

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0.075kg equates to 75g.

This means that the car emits 75g of CO per km.

dividing 75g by the molar mass of CO (28.01g/mol) we get 2.67761514 moles

5 0
3 years ago
Does The nucleus of an atom contain all of the protons in the atom
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i think so.

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6 0
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How to balance this equation KClO4 → KCl + ?O2(g) and what type of reaction occurs?
Ivahew [28]

Explanation:

here is the answer to your question

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