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Brilliant_brown [7]
2 years ago
13

Brass is an alloy of​

Chemistry
1 answer:
Gemiola [76]2 years ago
5 0

Answer:

Cooper and zinc if I remember right

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How many grams of magnesium acetate are in 8.95x10^23 formula units?
Natasha_Volkova [10]

Answer:

211.63 g.

Explanation:

  • Particles could refer to atoms, molecules, formula units.
  • <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>

<em><u>Using cross multiplication:  </u></em>

1.0 mole → 6.022 x 10²³ molecules.

??? mole → 8.95 x 10²³ molecules.

  • The no. of moles of magnesium acetate = (8.95 x 10²³ molecules) (1.0 mole) / (6.022 x 10²³ molecules) = 1.486 mol.

∴ The grams of magnesium acetate are in 8.95 x 10²³ formula units = n x molar mass = (1.486 mol)(142.394 g/mol) = 211.63 g.

5 0
3 years ago
A model of an ideal gas is shown here. A student designs an experiment to test the impact of increasing the pressure on the syst
k0ka [10]

A. As pressure on the gas increases, the volume and temperature will both decrease

6 0
3 years ago
Ocean tides on earth MOST influenced by gravity from the __
Ivahew [28]

Answer:

moon

Explanation:

the moon's gravitational pull generates tidal force which affects earth's tides

8 0
2 years ago
Which of the subshells in the electron configuration of hf behave as core orbitals?
Nesterboy [21]
<span>Of all the sub-shells shown ( 1s ,2s ,2p ,3s ,3p ,4s ,3d ,4p ,5s ,4d ,5p ,6s ,4f ,5d) the ones that act as core orbital of HF (Hydrogen Fluoride) is 6s and 5d</span>
3 0
3 years ago
Write a balanced half-reaction describing the reduction of aqueous vanadium(V) cations to aqueous vanadium(I) cations.
11Alexandr11 [23.1K]

Explanation:

Reduction is a chemical reaction in which electrons are gained by one of the atoms taking part in the reaction and lowering of an oxidation state of that atom.

Reduction takes place at the cathode.

In aqueous, vanadium(V) is present in +5 oxidation state which on reduction changes to vanadium(I) with +1 oxidation state.

The half reaction is :

V^{5+}(aq)+4e^- \rightarrow V^{1+}(aq)


5 0
3 years ago
Read 2 more answers
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