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pochemuha
3 years ago
14

Identify each of these substances as acidic, basic, or neutral. pure water, pH = 7.0 lake water, pH = 6.5 baking soda solution,

pH = 9 soapy water, pH = 12
Chemistry
2 answers:
Alex_Xolod [135]3 years ago
5 0

Answer:

pure water, pH = 7.0 (Neutral)

lake water, pH = 6.5 (Acidic)

baking soda solution, pH = 9 (Alkaline)

soapy water, pH = 12 (Alkaline)

Explanation:

The degree of acidicity or alkalinity of a solution can be determined on a pH meter. A pH below 7 is acidic; a pH of 7 is neutral; a pH value of above 7 is alkaline.

Elan Coil [88]3 years ago
4 0

Answer:

Explanation:

NEUTRAL pure water, pH = 7.0

ACIDIC lake water, pH = 6.5

BASIC baking soda solution, pH = 9

BASIC soapy water, pH = 12

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PLEASE ANSWER ASAP!!!!!!! 50 points if the answer is correct!
Ad libitum [116K]

5

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95

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Explanation:

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5

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100

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5

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Similarly, we have

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8 0
3 years ago
Which of the following is not a base
SVEN [57.7K]
The answer is H₃C₆H₅O₇ (OPTION D).

In essence, the question is asking which of the options is an acid or a neutral compound; thus not a base.  A base is a compound that accepts free hydrogen ions while in aqueous solution and as such they usually lack hydrogen ions that can be released in solution.  If you ionize all the compounds/molecules above, the only on that has free hydrogen ions is OPTION D (which is an organic acid and not a base).
3 0
3 years ago
Wood is made mostly of cellulose and has a chemical formula of C6H1005. Which of
astra-53 [7]

Answer:

Answer below

Explanation:

First to show combustion, you use O₂.

So   C₆H₁₀O₅ +  O₂ is the reaction.  Assuming complete combustion, all you get as products are CO₂ and H₂O.  Then you have to balance the full reaction.

C₆H₁₀O₅  +  6O₂  ----->  6CO₂  +  5H₂O

6 Carbons on each side

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17 Oxygens on each side

8 0
3 years ago
Question 6 (1 point)
Mnenie [13.5K]

Answer:

The correct option is;

d 4400

Explanation:

The given parameters are;

The mass of the ice = 55 g

The Heat of Fusion = 80 cal/g

The Heat of Vaporization = 540 cal/g

The specific heat capacity of water = 1 cal/g

The heat required to melt a given mass of ice = The Heat of Fusion × The mass of the ice

The heat required to melt the 55 g mass of ice = 540 cal/g × 55 g = 29700 cal

The heat required to raise the temperature of a given mass ice (water) = The mass of the ice (water) × The specific heat capacity of the ice (water) × The temperature change

The heat required to raise the temperature of the ice from 0°C to 100°C = 55 × 1 × (100 - 0) = 5,500 cal

The heat required to vaporize a given mass of ice = The Heat of Vaporization × The mass of the ice

The heat required to vaporize the 55 g mass of ice at 100°C = 80 cal/g × 55 g = 4,400 cal

The total heat required to boil 55 g of ice = 29700 cal + 5,500 cal + 4,400 cal = 39,600 cal

However, we note that the heat required to vaporize the 55 g mass of ice at 100°C = 80 cal/g × 55 g = 4,400 cal.

The heat required to vaporize the 55 g mass of ice at 100°C = 4,400 cal

3 0
3 years ago
Which chemical equation best represents the process of photosynthesis?
Over [174]

Answer:

6CO2 + 6H20 ----> C6H12O6 + 6O2

Explanation:

(Carbon Dioxide) + (Water) ------> (Glucose) + (Oxygen)

6 0
3 years ago
Read 2 more answers
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