3 years ago

Help help help I will give brainliest

Chemistry

2 answers:

vampirchik [111]3 years ago

8 0

Answer:

its b alkyne

Explanation:

brinliest po plsss

jeyben [28]3 years ago

4 0

Answer:

Alkyne so its b

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3 years ago

A lime has a [H+] concentration of 0.0120 M.<br><br> What is the pH of the lime? 3 sig figs

Novosadov [1.4K]

Answer: pH= 1.92

Explanation:

pH= -log[H+]

pH= -log[0.012]

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4 0

3 years ago

4Cr(s)+3O2 (g )= Cr2O3 (s)<br> Find the theoretical yield in moles and grams

Assoli18 [71]

The balanced reaction is:

<span>4Cr(s)+3O2 (g )= Cr2O3 (s)

Since we are not given the amount of any of the reactants, we assume we have one gram of chromium. Calculations are as follows:

1 g Cr ( 1 mol Cr / 52 g Cr ) ( 1 mol Cr2O3 / 4 mol Cr ) = <span>0.005 mol Cr2O3

</span></span>0.005 mol Cr2O3 (151.99 g Cr2O3 / 1 mol Cr2O3 ) = 0.7307 g <span>Cr2O3
</span>
Therefore, the theoretical yield for 1 gram of Cr is 0.005 mol Cr2O3 or 0.7307 g Cr2O3.

7 0

3 years ago

What mass of aluminum (in g) would be

antiseptic1488 [7]

Mass of Aluminum (in g) : 4.104

<h3>Further explanation</h3>

Reaction

2 Al(s) + 6 HCl(aq) → 2 AICI₃ (aq) + 3 H₂(g)

mol HCl :

$\tt 1.3\times 0.35=0.455$