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marta [7]
2 years ago
8

Which of these can be used as an inert electrode? copper platinum silver zinc

Chemistry
2 answers:
Shtirlitz [24]2 years ago
7 0

Answer:

zinc

Explanation:

kwkejnrkewnrkwe

Alik [6]2 years ago
5 0

Answer:

I believe it is platinum

Explanation:

I think it is, haha

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NikAS [45]
A.) baking soda is the answer
6 0
2 years ago
6. 7. A hyperbaric chamber has a volume of 200. L. (a) How many moles of oxygen are needed to fill the chamber at room temperatu
Otrada [13]

Answer:

a) 24.7 mol

b) 790 g

Explanation:

Step 1: Given data

  • Volume of the chamber (V): 200. L
  • Room temperature (T): 23 °C
  • Pressure of the gas (P): 3.00 atm

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 23°C + 273.15 = 296 K

Step 3: Calculate the moles (n) of oxygen

We will use the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 3.00 atm × 200. L/(0.0821 atm.L/mol.K) × 296 K = 24.7 mol

Step 4: Calculate the mass (m) corresponding to 24.7 moles of oxygen

The molar mass (M) of oxygen ga sis 32.00 g/mol. We will calculate the mass of oxygen using the following expression.

m = n × M

m = 24.7 mol × 32.00 g/mol = 790 g

6 0
3 years ago
Which are always the first waves of an earthquake to be detected?
frez [133]

Answer:

The first kind of body wave is the P wave or primary wave.

Explanation:

This is the fastest kind of seismic wave, and, consequently, the first to 'arrive' at a seismic station.

6 0
2 years ago
How many moles of coF3 are produced when 1.25 moles of 3co reacts
oee [108]

Answer:

1.25 moles

Explanation:

First, we need to balance the equation. Essentially, this means making sure we have the same number of each atom on each side.

On the left side, we currently have:

- 1 Co atom

- 2 F aomts

On the right side, we have:

- 1 Co atom

- 3 F atoms

To balance it, add a 2 to Co on the left, 3 to F2 on the left, and 2 to CoF3 on the right:

2Co+3F_2 → 2CoF_3

Now, we have 1.25 moles of Co, and since the ratio between Co and CoF3 is 1:1, we also have 1.25 moles of CoF3.

Thus, the answer is 1.25 moles.

7 0
3 years ago
Read 2 more answers
A 65.0-mL aqueous solution contains 7.54 g of copper (II) chloride, CuCl2. Calculate the molarity of the solution. {Ans. ~ [CuCl
Kamila [148]

The first thing we need to remember is that:

We have 7.54g of CuCl2 so we need to express this amount in moles dividing by the molar mass of CuCl2.

This is:

And, also remember that 65.0mL equals 0.065L.

Now, replacing in the molarity equation:

Thus the answer is 0.862M.

6 0
1 year ago
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