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barxatty [35]
3 years ago
6

Which probing question lies within the scope of physics?

Chemistry
1 answer:
masha68 [24]3 years ago
7 0

Answer:

answer number C is the correct answer for this

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53. The relative molecular mass of CHO is 90.
ladessa [460]

Answer: 29

Explanation:

3 0
3 years ago
Describe the difference between gravitational force and strong nuclear force
arsen [322]

Gravitational force is much weaker, because it is the force of gravity, or the force that makes smaller objects be pulled towards a much bigger one with a certain amount of force.

Now strong nuclear force, which is very strong, keeps the atomic particles in an atom from separating, and the reason it is so powerful is because the particles in an atom repel each other and this force keeps them from doing .that

6 0
4 years ago
At what temperature a gas with volume 175 L at 15 oC and 760mmHg will occupy a volume of 198 L at a pressure 640mmHg?
MrRissso [65]

Answer:

To calculate the pressure when temperature and volume has changed, we use the equation given by combined gas law. The equation follows:

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

T

1

P

1

V

1

=

T

2

P

2

V

2

where,

P_1,V_1\text{ and }T_1P

1

,V

1

and T

1

are the initial pressure, volume and temperature of the gas

P_2,V_2\text{ and }T_2P

2

,V

2

and T

2

are the final pressure, volume and temperature of the gas

We are given:

\begin{gathered}P_1=760mmHg\\V_1=175L\\T_1=15^oC=[15+273]K=288K\\P_2=640mmHg\\V_2=198L\\T_2=?K\end{gathered}

P

1

=760mmHg

V

1

=175L

T

1

=15

o

C=[15+273]K=288K

P

2

=640mmHg

V

2

=198L

T

2

=?K

Putting values in above equation, we get:

\begin{gathered}\frac{760mmHg\times 175L}{288K}=\frac{640mmHg\times 198L}{T_2}\\\\T_2=274K\end{gathered}

288K

760mmHg×175L

=

T

2

640mmHg×198L

T

2

=274K

Hence, the temperature when the volume and pressure has changed is 274 K

7 0
4 years ago
Which TWO of the following options are TRUE about atomic mass and mass number?
Citrus2011 [14]

Answer:

E - Atomic mass is calculated by weighted atomic average using all the isotope data available.

G - Mass number is equal to the sum of protons and electrons in an atom.

Explanation:

Take an element

\\ \bull\sf\longmapsto _{25}Mg^{12}

  • Mass no is 25 and atomic no is 12.
7 0
3 years ago
Which of the following is the balanced chemical equation for photosynthesis?
LuckyWell [14K]
The first one, <span>6H2O + 6CO2 → 6O2 + C6H12O6 is.</span>
8 0
4 years ago
Read 2 more answers
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