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Kamila [148]
3 years ago
10

Which of the following correctly describes voltage difference?

Chemistry
1 answer:
7nadin3 [17]3 years ago
7 0
Voltage difference is the push that causes charges to flow from high to low areas.
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If a dog has a mass of 16.5 kg, what is its mass in the following units? Use scientific notation in all of your answers. (a) Wha
const2013 [10]

Answer:

(a) 16500 grams

(b) 16500000 milligrams

(c) 16500000000 micrograms

8 0
3 years ago
A student combined two colorless aqueous solutions. One of the solutions contained Na2CO3 as the solute and the other contained
Kazeer [188]

Answer:

Bubbles will be formed when two solutions will be combined.

Explanation:

When the solution containing Na_{2}CO_{3} and HCl as a solute will be combined, the reaction will be as follows,

Na_{2}CO_{3}(aq) + 2HCl(aq) \rightarrow   2NaCl(aq)+ H_{2}O(l)+CO_{2}(g)

As a result of combination of the two solutions bubbles will be formed which will depict the evolution of carbon dioxide gas.

5 0
3 years ago
What physical or chemical properties would help identify a salt as containing a transition metal ion?
sasho [114]
Many transition metal ions(e.g. in soluble salt solutions) give colored hydroxide precipitates when mixed with aqueous sodium hydroxide solution. However zinc ions give a white hydroxide precipitate. These reactions can be used to help identify transition metal ions in solution.
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8 0
3 years ago
Plz answer quick :) it would make me happy
dangina [55]

Answer:

Single replacement reaction

Explanation:

By right, it should be called displacement reaction or redox reaction. Metal ion A in solution is reduced to form solid metal A while metal solid B is oxidised to form metal ion B.

Only 1 type of replacement occurred so it should be single replacement reaction

5 0
4 years ago
Read 2 more answers
Gifblaar is a small South African shrub and one of the most poisonous plants known because it contains fluoroacetic acid (FCH2CO
PSYCHO15rus [73]

[H_{3}O^{+}] = 0.00770 M

The equilibrium equation representing the dissociation of FCH_{2}COOH

FCH_{2}COOH(aq) + H_{2}O (l)    FCH_{2}COO^{-}(aq)+ H_{3}O^{+}(aq)

Given [H_{3}O^{+}] = 0.00770 M

Let the initial concentration of acid be x and change y

So y = [H_{3}O^{+}] =[FCH_{2}COO^{-}] = 0.00770 M

pK_{a} = 2.59K_{a} = 10^{-2.59}   = 0.00257 M

K_{a} = \frac{(0.00770 M)(0.00770 M)}{x - 0.00770}

0.00257 = \frac{0.00005929}{x - 0.00770}

0.00257 x - 0.00001979 = 0.00005929

x = 0.031 M

Therefore, initial concentration of the weak acid is <u>0.031 M</u>

4 0
4 years ago
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