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jeka57 [31]
3 years ago
11

Which of the following is true about subatomic particles?

Chemistry
2 answers:
Ganezh [65]3 years ago
8 0

Answer:

I think the answer is C. protons are positively charged are one of the heaviest subatomic particles.

Explanation:

Electrons are negatively charged which is the basic unit of an electric charge

mass of the electron is 9.10938356 × 10−31 kg, which is only 1/1,836the mass of a proton.

shtirl [24]3 years ago
3 0

Answer:

Protons are positively charged and are one of the heaviest subatomic particles

Explanation:

A typical atom consists of three subatomic particles: protons, neutrons, and electrons.

Using Method of elimination;

Option 1 - This is incorrect because the mass of a neutron is slightly greater than the mass of a proton. Electrons are extremely small. The mass of an electron is only about 1/2000 the mass of a proton or neutron

Option 2 - This is incorrect because Neutrons are neutral with no net charge however the mass of a neutron is slightly greater than the mass of a proton.

Option 3 - This is correct because protns are indeed positively charged as the name implies and are one of the heaviest sub atomic particles.

Option 4 - This is incorrect because electrons are negatively charged. However they are indeed the lightest sub atomic particle.

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Please answer each thank you
liubo4ka [24]

Answer:

Properties of Metals:      

- Shiny

-Malleable

-Good Conductors of electric current

- Good conductors of heat

Properties of Non-metals:

- Dull

- Not Malleable

- Bad conductors of electric current but good electric insulators

- Poor conductors of heat

Note: The first dash for the Properties of metals goes with the first dash of Properties of Non-metals and so on.

3 0
4 years ago
What is the amount of heat required to raise the temperature of 200.0 g of aluminum by 10°C? (specific heatof aluminum = 0.21 ca
ELEN [110]

Answer:

We need 420 cal of heat

Explanation:

Step 1: Data given

Mass of the aluminium = 200.0 grams

Temperature rises with 10.0 °C

Specific heat of aluminium = 0.21 cal/g°C

Step 2: Calculate the amount of heat required

Q =m * c* ΔT

⇒with Q =  the amount of heat required= TO BE DETERMINED

⇒with m = the mass of aluminium = 200.0 grams

⇒with c = the specific heat of aluminium = 0.21 cal/g°C

⇒with ΔT = the change of temperature = 10.0°C

Q = 200.0 grams * 0.21 cal/g°C * 10.0 °C

Q = 420 cal

We need 420 cal of heat (option 2 is correct)

3 0
3 years ago
A sodium flame has a characteristic yellow color due to emissions of wavelength 589 nm. What is the mass equivalence of one phot
Sladkaya [172]
I really don’t know but I’ll tell you soon
8 0
4 years ago
Guys help me, please
Pepsi [2]

Answer:

radiation, conduction, convection, conduction

5 0
3 years ago
Read 2 more answers
Materials that don't allow electrons to flow freely are called _____.
EastWind [94]
The answer is conductors

You welcome : )
4 0
4 years ago
Read 2 more answers
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