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tatuchka [14]
3 years ago
5

Single-use earplugs require a professlonal fitting before they can be used.

Chemistry
2 answers:
Morgarella [4.7K]3 years ago
3 0
The answer is B) False
Marysya12 [62]3 years ago
3 0

Answer:

The answer is false

Explanation:

Because i am taking this safety test and i got that question right ong

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Lina20 [59]

Answer:

option b

Explanation:

8 0
3 years ago
What scale do we use to measure how acid or alkali something is
aniked [119]
The pH scale is used to measure how acidic or alkaline something is.

Hope that helped you!
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4 0
3 years ago
Frrrreeeeeee point freeeeee
ahrayia [7]

Answer:

Ok the answer is 345

Explanation:

7 0
3 years ago
6.285×10^3 mg = _____? _____ kg
TiliK225 [7]
One kilogram is equal to one thousand grams. Further, one gram is equal to 1000 mg. The conversion is as shown below,
                    (6.285 x 10³ mg) x (1 g / 1000 mg) x (1 kg / 1000 g)
The numerical value of the operation above is 0.006285 kg. 
6 0
4 years ago
Read 2 more answers
Draw a schematic of the hydrogen atom with the single proton in the nucleus, and the n=1, n=2, n=3, and n=4 energy level options
max2010maxim [7]

Explanation:

According to Bohr's postulates, the electron in the present in the lower energy level can absorb energy and exits to higher energy level. Also, when this electron returns back to its orbit, it emits some energy.

Since the hydrogen consists of 1 electron and 1 proton. The lowest energy configuration of the hydrogen is when n =1 or, when the electron is present in the K-shell or the ground state.

The possible transition for the electron given in the question is :

n = 2, 3 and 4

The schematic diagram of the hydrogen atom consisting of these four quantum levels in which the electron can jump (Absorption) and comeback to from these energy levels (emission) .

3 0
3 years ago
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