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zubka84 [21]
2 years ago
10

The chemical formula for sulfuric acid is H2SO4.

Physics
2 answers:
ipn [44]2 years ago
5 0
No. Of hydrogen atoms is4
No. Of sulphur atoms is 2
No. Of oxygen atoms is 8
melamori03 [73]2 years ago
4 0

Answer:In 2H_2SO_4, the number of hydrogen atoms is 4 ,the number of sulfur atoms is 2 and the number of oxygen atoms is 8.

Explanation:

Molecular formula of sulfuric acid is H_2SO_4

the 2 in front of H_2SO_4 menas that there are two molecules of H_2SO_4.

In 2 molecules of H_2SO_4 there are:

  • 4 atoms of hydrogen.
  • 2 atoms pf sulfur
  • 8 atoms of oxygen.
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Hope this helps :)
5 0
2 years ago
A student pushes against a wall with a force of 30N. The wall does not move. What amount of force does the wall exert on the stu
True [87]

Answer:

C

Explanation:

they both have to be the same for both to not move

8 0
2 years ago
Read 2 more answers
(a) What is the ionization energy of a hydrogen atom that is in the n = 6 excited state? (b) For a hydrogen atom, determine the
crimeas [40]

Answer:

(a) 0.3778 eV

(b) Ratio = 0.0278

Explanation:

The Bohr's formula for the calculation of the energy of the electron in nth orbit is:

E=\frac {-13.6}{n^2}\ eV

(a) The energy of the electron in n= 6 excited state is:

E=\frac {-13.6}{6^2}\ eV

E=-0.3778\ eV

Ionisation energy is the amount of this energy required to remove the electron. Thus, |E| = 0.3778 eV

(b) For first orbit energy is:

E=\frac {-13.6}{1^2}\ eV

E=-13.6\ eV

Ratio=\frac {E_6}{E_1}

Ratio=\frac {-0.3778}{-13.6}

Ratio = 0.0278

7 0
3 years ago
The filament of a certain lamp has a resistance that increases linearly with temperature. When a constant voltage is switched on
Neporo4naja [7]

Answer:

162.8 K

Explanation:

initial current = io

final current, i = io/8

Let the potential difference is V.

coefficient of resistivity, α = 43 x 10^-3 /K

Let the resistance is R and the final resistance is Ro.

The resistance varies with temperature

R = Ro ( 1 + α ΔT)

V/i = V/io (1 + α ΔT )

8 = 1 + 43 x 10^-3 x ΔT

7 = 43 x 10^-3 x ΔT

ΔT = 162.8 K

Thus, the rise in temperature is 162.8 K.

5 0
2 years ago
If a total force exerted by water in a container with a bottom area of 2 square meters is 450 newtons, what's the water pressure
m_a_m_a [10]

its B 0.225kPa using the formula p=f/A then change the pascals into kpa

7 0
2 years ago
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