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Ivan
3 years ago
12

PLS HELP ASAP

Chemistry
2 answers:
LenaWriter [7]3 years ago
6 0

Answer:

B) burning wood

Explanation:

Phantasy [73]3 years ago
6 0

im pretty sure it is burning wood

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What is the PH of a 0.05M solution of the strong base Ca(OH)2 at 25C​
krok68 [10]

Answer:

pH = 14 - pH = 14 - 1 = 13

Explanation:

0.05M Ca(OH)₂ => 0.05M Ca⁺(aq) + 2(0.05M) OH⁻(aq)

pOH = -log[OH⁻] = -log(0.100) = 1

pH = 14 - pH = 14 - 1 = 13

3 0
3 years ago
Sample of carbonate rock is a mixture of CaCO3 and MgCO3. The rock is Analyzed in a laboratory and the results are recorded in t
ExtremeBDS [4]

Answer:

You need the mass of Mg and Ca in the sample and their molar masses

Explanation:

Its the only answer that made sense because using those 4, can give you their ration

7 0
3 years ago
Which of the following statements is true concerning an aqueous solution of the weak base NH3?
babunello [35]

Answer: Option (A) is the correct answer.

Explanation:

When weak base NH_{3} is dissolved in water then the reaction will be as follows.

       NH_{3} + H_{2}O \rightarrow NH^{+}_{4} + OH^{-}

When NH_{3} is compared with water then oxygen atom of H_{2}O being more electronegative in nature will keep its lone pair of electrons towards itself.

Hence, water will act as a neutral molecule and hence, NH_{3} will act as a stronger base as compared to H_{2}O.

On the other hand, OH^{-} will have both lone pair of electrons and a negative charge. Hence, its electron density is much more as compared to NH_{3} that only contains a lone pair of electron.

Therefore, NH_{3} will act as a weak base as compared to OH^{-}.

Thus, we can conclude that the statement OH^{-} is a stronger base than NH_{3}, is true concerning an aqueous solution of the weak base NH_{3}.

8 0
3 years ago
What would be the volume, in liters, of 85.5 grams of carbon monoxide at STP?
Anna11 [10]
The volume in liters of 85.5 grams of carbon monoxide at STP would be —— 68.4L
8 0
2 years ago
A student prepares a solution of sodium chloride by dissolving 116.9 g of NaCl into enough water to make 1.00 L of solution. How
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