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Vera_Pavlovna [14]
3 years ago
15

Cathode rays were shown to be a stream of _____. protons electrons neutrons quarks

Chemistry
1 answer:
Murljashka [212]3 years ago
7 0

It's B) electrons, is the right answer

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8.5C
DENIUS [597]

Answer:

i.e belongs to same group because of valence electrons are same

Explanation:

so it has same chemical behaviour. and q has more energy than r ionisation energy decreases from top to bottom

3 0
3 years ago
Gold forms face-centered cubic crystals. The atomic radius of a gold atom is 144 pm. Consider the face of a unit cell with the n
kipiarov [429]

Answer:

The length of an edge of this unit cell is 407.294 pm

Explanation:

Face centered cubic structure contains 4 atoms in each unit cell and 12 coordination number, occupying about 74% volume of the total cell. Face centered cubic structure is known for efficient use of space for atom packing.

To determine the edge length, a relationship between the radius of the atom and edge length is used.

X = R√8

Where;

X is the length of an edge of this unit cell

R is the radius of the gold atom = 144 pm = 144 X 10⁻¹² m

X = 144 X 10⁻¹²√8

X = 407.294 X 10⁻¹² m

X = 407.294 pm

Therefore, the length of an edge of this unit cell is 407.294 pm

8 0
2 years ago
My feet get hot as soon as I touch the sand. What kind of heat transfer occurred?
monitta
Conduction is the correct Answer
please mark brainliest
7 0
2 years ago
The use of evaporation and condensation to separate parts of a mixture is
prisoha [69]

Answer:

The liquid collected during distillation when the evaporated substance condenses. A separation technique that uses evaporation to separate substances. The mixture is heated so that one substance evaporates. The vapour is collected and condenses into a liquid.

5 0
2 years ago
GIVING BRAINLIEST!!!
vazorg [7]

Answer:

Pecan trees 1 and 4

Explanation:

1: 1 and 4

2a: With good soil and good parent plants

2b: Heredity

6 0
2 years ago
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