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4 years ago

Who discovered that a dense positively charged atomic nucleus is at the core of every atom

Chemistry

1 answer:

Inessa [10]4 years ago

4 0

Answer:

Answer should be Ernest Rutherford

Explanation:

He was a New Zealand-born British physicist who came to be known as the father of nuclear physics.

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A sample of gas in a 14.6 L flexible container is at 25.0oC and 1.00atm. What is the volume of the sample when heated to 220.0oC

inn [45]

Answer: 24.1 L

Explanation:

To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

We are given:

$V_1=14.6L\\T_1=25.0^oC=(25+273)K=298K\\V_2=?\\T_2=220.0^0C=(220+273)K=493K$

Putting values in above equation, we get:

$\frac{14.6}{298K}=\frac{V_2}{493}\\\\V_2=24.1L$

Thus the volume of the sample when heated to 220.0oC and the pressure is constant is 24.1 L

7 0

3 years ago

How many Oxygen atoms in: 5H2SO3

astra-53 [7]

Answer:

Explanation: I think

5 0

3 years ago

Read 2 more answers

Jeff has night vision goggles and can see people and animals even if it is pitch black outside. What type of electromagnetic wav

forsale [732]

Infrared radiation

Explanation:

The type of electromagnetic waves Jeff uses to make his goggles work are the infrared radiations.

Jeff is certainly using a night vision goggle to see in the dark . It senses infrared radiations

Infrared radiations are part of the electromagnetic spectrum.
Every hot objects gives off infrared radiations.
These googles have thermal imaging sensors that detects these radiations.
Naked eyes cannot see the radiations.
The heat emitted is a form of radiation called the infrared radiation.

learn more:

Electromagetic radiation brainly.com/question/6818046

#learnwithBrainly

7 0

4 years ago

6. Give reasons.

MArishka [77]

Answeryou understand but id ont if your know the answer plz help me

Explanation:

3 0

2 years ago

Draw two lewis structures for a compound with the formula c4h10. No atom bears a charge, and all carbon atoms have complete octe

DIA [1.3K]

Answer:

See pictures!

Explanation:

Here is a drawing of butane (C4H10); labeled #1. An isomer of butane will also have the chemical formula C4H10 but is depicted different geometrically. I labeled this one #2.

4 0

3 years ago