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3 years ago

An element that has been broken down and released particles and energy is said to be ____.

Chemistry

2 answers:

rjkz [21]3 years ago

8 0

It is said to be radioactive. Hope this was helpful because I'm learning this in school and I think it's right.

KatRina [158]3 years ago

5 0

Radioactive dating, is the answer
hope it helps (:

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Water does not remain when an insoluble substance is added

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Which metals are called noble metals

Diano4ka-milaya [45]

I don't know if this is multiple choice but if it isn't I can name of few.

Fun Fact: Noble Metals are chemical elements that have outstanding tolerance and resistance to oxidation.

Answer: Palladium, Silver, Platinum, and Gold. Those are all examples of Noble Metals.

Other: Ruthenium, osmium, and rhodium.

<em>Hope this helps!</em>

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3 years ago

A 2.40 kg block of ice is heated with 5820 J of heat. The specific heat of water is 4.18 J•g^-1•C^-1. By how much will it’s temp

MrMuchimi

Answer: The temperature rise is $0.53^0C$

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

$Q=m\times c\times \Delta T$

Q = Heat absorbed by ice = 5280 J

m = mass of ice = 2.40 kg = 2400 g (1kg=1000g)

c = heat capacity of water = $4.18J/g^0C$

Initial temperature = $T_i$

Final temperature = $T_f$

Change in temperature , $\Delta T=T_f-T_i=?$

Putting in the values, we get:

$5280J=2400g\times 4.18J/g^0C\times \Delta T$

$\Delta T=0.53^0C$

Thus the temperature rise is $0.53^0C$

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3 years ago

Can someone please answer questions 32 and 33?

Talja [164]

32.) 55.6 mL HCl
33.) 0. 128 M

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