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Colt1911 [192]
3 years ago
13

Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describe

s inappropriate lab safety?
Chemistry
1 answer:
Kruka [31]3 years ago
3 0

Explanation:

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The answer is A. The pH decreases
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What is the oxidation state of co in [co(oh2)6]2?
Ahat [919]

Correct compound is [Co(H2O)6]^+3

The oxidation state of Co is +3

[Co(H2O)6]^+3

Let

 Co be x

 H2O = 0

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 x = 3

What is oxidation state?

The oxidation state, commonly known as the oxidation number, is the potential charge that an atom would have if all of its bonds to other atoms were fully ionic. It describes the degree of atom oxidation within a chemical compound.The oxidation state may be positive, negative, or zero in theory.

The oxidation number, sometimes referred to as the oxidation state, is the total number of electrons that an atom gains or loses while uniting with another atom to form a chemical bond.

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7 0
1 year ago
what pressure in N/m2 would be exerted if a 65 kg person were sitting on a stool with a seat diameter of 12 inches?
yaroslaw [1]

d = diameter of the seat = 12 inch

we know that , 1 inch = 0.0254 m

hence

d = diameter of the seat = 12 inch = 12 (0.0254) m = 0.305 m

r = radius of seat = diameter/2 = d/2 = 0.305/2 = 0.1525 m

A = area of seat = πr²

m = mass of the person = 65 kg

g = acceleration due to gravity = 9.8 m/s²

F = force due to weight of person on the seat = mg

pressure on the seat is given as

P = F/A

P = mg/A

P = mg/(πr² )

inserting the values

P = (65 x 9.8)/((3.14) (0.1525)²)

P = 8723.1 N/m²

7 0
3 years ago
The entire range of electromagnetic wave frequencies is known as ______.
Vilka [71]
The entire range of electromagnetic frequencies is known as C, the electromagnetic spectrum.

Television remote controls (D) do NOT use radio waves (they use infrared radiation).

A material that allows some, but not all, light to pass through it, would be described as translucent (C).
8 0
3 years ago
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