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elena-14-01-66 [18.8K]
3 years ago
8

HELP PLS EEEEEEEEEEEEEEEEEEEE

Chemistry
2 answers:
Anika [276]3 years ago
6 0
I think it’s B!! Good luck
stepladder [879]3 years ago
3 0

Answer:

what do you help with

Explanation:

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CaO +<br> HCI →<br> CaCl2 +<br> H20
andrew-mc [135]

Explanation:

To balance this chemical equation-

see

Balanced form:-

CaO + 2 HCl ==. CaCl2 + H2O

.

7 0
3 years ago
Calculate the pOH and the pH of a 5.0 x 10-2 M solution of NaOH.
k0ka [10]

Answer:

pOH = 1.3, pH = 12.7

Explanation:

Since NaOH is a strong base, it will completely ionize; further, since it completely ionizes, our hydroxide concentration (a product of the ionization) will be the same as the given concentration of NaOH.

NaOH -> Na⁺ + OH⁻, [OH⁻] = 5.0 x 10^-2 M

pOH is the negative log of the hydroxide concentration, so plug our hydroxide concentration in:

pOH = -log[OH⁻] = -log[5.0 x 10^-2 M] = 1.3

Since pH + pOH = 14, we can plug in pOH and solve for pH:

pH + 1.3 = 14

pH = 14 - 1.3 = 12.7

Thus, our pOH = 1.3 and pH = 12.7.

5 0
3 years ago
What is the source of energy for an earthquake
MA_775_DIABLO [31]
Seismic waves is the energy of and earthquake aka Elastic Energy
3 0
3 years ago
Read 2 more answers
A 1.2 kg sample of Th-228 has a half-life of 1.9 years. How many grams of Th is left after 13.3 years?
Bumek [7]
.009375 kg or 9.375 grams will remain
7 0
3 years ago
Will marks brainly if it isn’t a copied answer!!!
Neporo4naja [7]

What kind of control like scientific?

5 0
2 years ago
Read 2 more answers
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