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kondaur [170]
4 years ago
11

Who would most likely be required to work with sodium hydroxide?

Chemistry
2 answers:
kodGreya [7K]4 years ago
5 0

Answer:

A. a plumber

Explanation:

I have the same question (Edg)

GenaCL600 [577]4 years ago
3 0
A plumber- Sodium hydroxide is cleaner and plumbers clean
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A 80.0 g piece of metal at 88.0°C is placed in 125 g of water at 20.0°C contained in a calorimeter. The metal and water come to
grandymaker [24]

Answer:

The specific heat of the metal is 0.485 J/g°C

Explanation:

<u>Step 1:</u> Data given

Mass of the piece of metal = 80.0 grams

Mass of the water = 125 grams

Initial temperature of the metal = 88.0 °C

Initial temperature of water =20.0 °C

Final temperature = 24.7 °C

pecific heat of water is 4.18 J/g*°C

<u>Step 2:</u> Calculate specific heat of the metal

Qgained = -Qlost

Q =m*c*ΔT

Qwater = - Qmetal

m(water)*c(water)*ΔT(water) = -m(metal)*c(metal)*ΔT(metal)

with mass of water = 125 grams

with c( water) = 4.18 J/g°C

with ΔT(water) = T2-T1 = 24.7 - 20 = 4.7°C

with mass of metal = 80.0 grams

with c(metal) = TO BE DETERMINED

with ΔT(metal) = 24.7 - 88.0 = -63.3 °C

125*4.18*4.7 = -80 * C(metal) * -63.3

2455.75 = -80 * C(metal) * -63.3

C(metal) = 2455.75 / (-80*-63.3)

C(metal) = 0.485 J/g°C

The specific heat of the metal is 0.485 J/g°C

3 0
4 years ago
Help ! how do I do this
DedPeter [7]
I think it is going to be 3
5 0
3 years ago
Subtracting atomic number from atomic mass will give the number of
faltersainse [42]

Answer:

:)

Explanation:

If we subtract the atomic number from the atomic mass: atomic mass - atomic number = number of protons + number of neutrons - number of protons. Thus we get the number of neutrons present in an atom when we subtract the atomic number from the atomic mass.

8 0
3 years ago
Read 2 more answers
The rotten smell of a decaying animal carcass is partially due to a nitrogen-containing compound called putrescine. Elemental an
gtnhenbr [62]

Answer:C2H6N

Explanation:

Putrescine formula is C4H12N2

Assuming 100g sample is present

The percent changes to grams and it is converted to moles by dividing it with the atomic masses.

C= 54.50g/12 = 4.541moles

H = 13.73g/1 = 13.73moles

N= 31.77g/14 = 2.269moles

Divide through with the smallest moles value.

C= 4.541/2.269 = 2

H= 13.73/2.269=6

N= 2.269/2.269=1

Therefore the empirical formula is

C2H6N

8 0
4 years ago
At what temperature does water evaporate?
Alexus [3.1K]
It evaporates at 100°
4 0
3 years ago
Read 2 more answers
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