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3 years ago

What's the answer ???

Chemistry

1 answer:

lesya692 [45]3 years ago

5 0

The answer would be step three but not positive this is correct hope this helps

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Which of these pairs of atoms are isotopes?

Troyanec [42]

Answer:

Explanation:

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3 years ago

What is the pH of a solution after the addition of 30.0 mL of 0.100 M NaOH to 50.0 mL of 0.10 M HBr?

Pani-rosa [81]

Answer:

pH = 1.6

Explanation:

HBr + NaOH ⇒ NaBr + H2O

0 mL NaOH:

HBr ↔ H3O+ + Br-

⇒ [ H3O+] = M HBr = 0.1 M

⇒pH = -log [H3O+] = 1

30 mL NaOH:

⇒ mol NaOH = 0.1 mol / L * 0.03 L = 3 E-3 mol

⇒ mol HBr = 0.05 L * 0.1 mol/L = 5 E-3 mol

⇒ M HBr = ( 5 E-3 mol - 3 E-3 mol) / 0.08 L = 0.025 M

⇒ pH = - log (0.025) = 1.6

7 0

3 years ago

Which particle changes the mass of the isotope the most? which particle changes the mass of the isotope the most? electron captu

MAXImum [283]

This question is absurd

7 0

3 years ago

Read 2 more answers

What is the charge of the ions formed by Na and by Cl?

Alexxandr [17]

Answer:

Na+ is positively charged as it loses an electron

Cl- is negatively charged as it gains an electron

3 0

3 years ago

3.0 cm x 4.0 cm x 1.0 cm [?]cm^3

CaHeK987 [17]

Explanation:

Hi there!!

you asked to multiply these all right,

you can simply multiply it ,

=3cm × 4 cm × 1cm

= 12cm^2×1cm (4×3=12)

= 12cm^3 (12×1=12)

Therefore, theanswer is 12 cm^3.

Hope it helps..

4 0

3 years ago