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Basile [38]
2 years ago
8

A sample of 10K gold contains the following: 10.0g gold, 4.0g silver, 5.0g copper, and 5.0g nickel. What is the percent gold in

the sample?
Chemistry
2 answers:
stellarik [79]2 years ago
6 0

Answer:

oook

hi I am so sorry sorry sorry sorry I don't no answer

Explanation:

but you follow me and give me brainliest ok by by by by

dexar [7]2 years ago
4 0

Answer:

I don't no answer sorry

Explanation:

you follow me

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A gas sample occupies 350.0 mL at 546 mm Hg. What volume does the gas occupy at 652 mm Hg?​
leva [86]

Answer:

293.1 mL.

Explanation:

  • Boyle's law states that: at a constant temperature the pressure of a given mass of an ideal gas is inversely proportional to its volume.
  • It can be expressed as: <em>P₁V₁ = P₂V₂,</em>

P₁ = 546.0 mm Hg, V₁ = 350.0 mL.

P₂ = 652.0 mm Hg, V₂ = ??? mL.

<em>∴ V₂ = (P₁V₁)/(P₂)</em> = (546.0 mm Hg)(350.0 mL) / (652.0 mm Hg) = <em>293.1 mL.</em>

8 0
3 years ago
NEED HELP ASAP!!!<br> ( WILL MARK BRAINLIST)
kirza4 [7]

Answer:

The first and last choice

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7 0
3 years ago
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What is the mass of 0.100 mole of neon? (Watch sf’s) 2.018 g 20.18 g 2.02 g 2 g
makkiz [27]

Answer:

The mass of 0.100 mole of neon is 2.018 grams.

Explanation:

As we know the formula to find mass:

                           Number of moles         =  Mass/ Molar mass

                                        0.100                = Mass/ 20.17

                                        0.100 x 20.17   = Mass

                                                        Mass=2.018 grams.

Hope it helps!

7 0
3 years ago
During which event does the moon appear closer? Select one: a. Apogee b. Penumbra c. Perigee d. Umbra
Elden [556K]

Answer:

Perigee

Explanation:

In Perigee, The moon appears closer.

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3 years ago
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