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pav-90 [236]
3 years ago
13

11. Which of the following statements describe anions? Select all that apply.

Chemistry
1 answer:
Sveta_85 [38]3 years ago
4 0
The two first ones because it’s always the opposite
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28 grams of Al react with 30 Oxygen gas (O2) to produce Al Oxide (Al2O3). How many grams of Al Oxide will be produced
Kamila [148]

Answer:

58

Explanation:

Due to conservation of energy, the sum of the reactants = the sum of the products. So 28 + 30 = 58g

8 0
3 years ago
What would be the best indicator for titrating the weak base sodium bicarbonate using hcl titrant?
BabaBlast [244]

The methyl orange  would be the best indicator for titrating the weak base sodium bicarbonate using HCl titrant

When weak base is titrated with strong acid then , then solution is slightly acidic at end point . If weak acid is titrated with strong base then , the solution is slightly basic because salt formed will hydrolyzed to a certain extent .

In acid base titration at the end point the amount of the acid becomes chemically equivalent to the amount of the base present .The methyl orange  would be the best indicator for titrating the weak base with strong acid .

To learn more about  weak base please click here ,

brainly.com/question/19340043

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6 0
1 year ago
16.25 g of water at 54 C relaeases 402.7 J. What will be its final temp?
leonid [27]
Data:
Q = 402.7 J → releases → Q = - 402.7 J
m = 16.25 g
T initial = 54 ºC
adopting: c = 4.184J/g/°C
ΔT (T final - T initial) = ?

Solving:

Q = m*c*ΔT
-402.7 = 16.25*4.184*ΔT
-402.7 = 67.99*ΔT
\Delta\:T =  \frac{-402.7}{67.99}
\boxed{\Delta\:T \approx -5.92\:^0C}

If: ΔT (T final - T initial) = ?
-5.92^0 =  T_{final} -  54^0
T_{final} = 54^0 - 5.92^0
\boxed{\boxed{T_{final} = 48.08\:^0C}}\end{array}}\qquad\quad\checkmark

8 0
4 years ago
How much energy is given off by the following reaction, if 162.5 g of oxygen reacts with
san4es73 [151]
Aaaaaaaaaaaaaaaaaaaaaaa
7 0
3 years ago
The more ————-
Lera25 [3.4K]
I believe.. The answer you are looking for is A
8 0
3 years ago
Read 2 more answers
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