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sergejj [24]
4 years ago
10

ASAP taking exam rn

Chemistry
1 answer:
denpristay [2]4 years ago
6 0

Answer:

IT IS AN EXAM!

Read!

Explanation:

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What parts of a circuit is a conductor?
netineya [11]

Answer:

copper

Explanation:

These are usually copper wires with no insulation. They make the path through which the electricity flows. One piece of the wire connects the current from the power source (cell) to the load

3 0
3 years ago
A heliox tank contains 32% helium and 68% oxygen. The total pressure in the tank is 475 kPa. What is the partial pressure of hel
Paladinen [302]

Answer:

152 kPa = Partial pressure O₂

Explanation:

Data by percent is the molar fraction . 100.

Molar fraction of Helium = 32/ 100 → 0.32

Molar fraction of O₂ = 68/100 → 0.68

Sum of molar fractions in a mixture = 1

0.68 + 0.32 = 1

If we apply the molar fraction, we can determine the partial pressure.

Mole fraction = Partial pressure / Total pressure

0.32 = Partial pressure O₂ / 475kPa →  0.32 . 475 kPa = Partial pressure O₂

152 kPa = Partial pressure O₂

8 0
3 years ago
Someone do 5 plss:)))​
eduard

Answer: The answer is B

Explanation: Looking at the table given, the more wire loops you put on the nail, the more paperclips that it can hold. Meaning the electromagnet gets stronger the more loops you put on the nail

5 0
3 years ago
Consider an atom of oxygen in which the nucleus contains 8 protons and 8 neutrons. If it is doubly ionized, what is the charge o
inn [45]

Answer:

10 electrons will be present in an O2-

Explanation:

The atomic nucleus of oxygen contains 8protons and 8 neutron. It ionizes by gaining two more electrons making the total number of electrons in a doubly ionized oxygen to be 10 electrons.

7 0
3 years ago
The density of silver is 10.49 g/mL. If a sample of pure silver has a volume of 12.993 mL, what is the mass of the silver?
r-ruslan [8.4K]

Answer:

see the pic for more detail

4 0
3 years ago
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