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Cerrena [4.2K]
3 years ago
8

What metal is oxidized in the most common dry cell

Chemistry
1 answer:
Vaselesa [24]3 years ago
6 0

Answer: Copper

Explanation:

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CaCO3 For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the
Slav-nsk [51]

Answer:

Hello attached below is the data found in Aleks Data tab

answer :

i) N0

ii) N0

iii) YES ,  pH of highest solubility = 5

Explanation:

i) For CuBr

solubility does not change with pH  hence answer = NO

ii) For MgCl2

solubility does not change with pH hence the answer = NO

iii) For Ba(OH) 2

Solubility does change with pH hence the answer = YES

and the pH at which the highest solubility will occur is = 5

attached below is the reason for the answers given

4 0
3 years ago
(WILL MARK BRAINLIEST)<br> PLZ HELP ASAP
ArbitrLikvidat [17]

Answer:

a) 2NaOH(aq) + CuSO4(aq) -------------> Cu(OH)2(s) + Na2SO4(aq)

b) Ca(OH)2(aq) + CO2(g) --------------> CaCO3 + H2O (this is already balanced)

c) Pb(NO3)2 + H2SO4 --------> PbSO4 + 2HNO3.

d) 2KNO3 ------> 2KNO2 + O2

e) H2SO4 + 2(NaOH) -----> Na2SO4 + 2(H2O)

f) Ca(NO3)2(aq) + (NH4)2CO3(aq) ----------------> CaCO3(s) + 2NH4NO3(aq)

3 0
3 years ago
Read 2 more answers
Is a candle melting in the hot sun a chemical or a physical change?
alukav5142 [94]
Chemical,  because it is breaking down the chemical and properties in the candle itself.
4 0
3 years ago
What is the total number of moles of hydrogen atoms contained in 1 mole of (nh42c2o4?
skad [1K]
The answer is 8.  Hope this helps.
3 0
3 years ago
In an chemicalbreaction involving Fe and S, it was found that 45.2 g of Fes was produced. If the percent yield of the reaction i
saw5 [17]

Answer:

47.8 g

Explanation:

Remember the equation for percent yield:

% yield = actual / theoretical

We're given two of the values in the question, so plug n' play:

0.945 = 45.2 / theoretical

theoretical = 47.8 g

Keep in mind you can use mass here without converting to moles because we're working with products only. If you were given a mass of reactants, you would need to convert to moles and using a balanced chemical equation find the corresponding moles of product produced.

7 0
3 years ago
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