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defon
3 years ago
11

Water is an amphoteric substance because it can receive and donate hydrogen ions.

Chemistry
2 answers:
riadik2000 [5.3K]3 years ago
7 0

The answer is FALSE, because it is not an amphoteric, this is because it is not an acid.

Hope this helps.

sineoko [7]3 years ago
5 0

<em>Answer: False.</em>

<em>Hope this is correct!</em>

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It takes 1 kcal to raise the temperature of 1 kg of liquid water by 1 C, but only 0.5 kcal to raise the temperature of 1 kg of i
belka [17]

Answer:

a. 50KCal

b. 400KCal

c. Same as (a) above

Explanation:

Given

To raise the temperature of 1kg of liquid water at 1°C requires 1KCal

To raise the temperature of 1kg of ice or water vapour by 1°C requires 0.5KCal

To melt 1kg of ice at 0°C requires 80KCal

To evaporate 1kg of liquid water sitting at 100°C requires 540KCal

a. How much heat is required to raise the temperature of 5 kg of liquid water by 20 C?

To raise the temperature of 5 kg of ice by 20°C requires:

5 kg * (0.5 kcal / kgC) * 20C

= 50 KCal

b. How much heat is required to melt 5 kg of ice at 0 C?

To melt an ice of 5 kg of ice at 0 C requires:

5 kg * (80 kcal / kg)

= 400 KCal

c. Same as (a) above

6 0
3 years ago
Draw a basic atom (Bohr model showing me where everything is located in the above chart).
tino4ka555 [31]

Answer:

thhe anwer is d

Explanation:

the answer is d just took the quiz got 100 on edge 2022

6 0
2 years ago
How many molecules of water will be produced if 52.6 g of methane are burned?
liraira [26]
B there thanksgiving
7 0
3 years ago
How many grams of AgCl will be produced from 5.00 g of NaCl and 103 g of AgNO3?<br> grams
lapo4ka [179]

Answer:

12.3 g.

Explanation:

Whenever a similar problem is involved, we need to write the chemical reaction representing the net change, as well as due to the fact that we need to know the stoichiometry involved.

Sodium chloride reacts with silver nitrate in a double displacement reaction to produce a cation exchange, that is, we produce silver chloride and sodium nitrate given by the following balanced chemical equation:

AgNO_3 (aq)+NaCl(aq)\rightarrow AgCl(s)+NaNO_3 (aq)

According to the balanced chemical equation, the molar stoichiometry of silver nitrate to sodium chloride is 1 : 1.

Let's find moles of each substance to determine the limiting reactant. To do this, divide mass of each component by its molar mass:

n_{NaCl}=\frac{5.00 g}{58.44 \frac{g}{mol} }= 0.08556 mol\\n_{AgNO_3}=\frac{103 g}{169.87 \frac{g}{mol}}= 0.6063 mol

Since the stoichiometry of this reaction is 1 : 1, we can compare the moles directly. Notice that the number of moles of NaCl is lower than the number of moles of silver nitrate. This means NaCl is the limiting reactant.

According to the balanced chemical equation, 1 mole of NaCl produces 1 mole of AgCl, so the amount of AgCl would be:

n_{AgCl}=n_{NaCl}=0.08556 mol

In order to convert this into mass, let's multiply by the molar mass of AgCl:

m_{AgCl}=0.08556 mol\cdot143.32 \frac{g}{mol}=12.3 g

5 0
3 years ago
Which of the following is the correct structural formula for ethene
lord [1]
Ethene belongs to class of unsaturated hydrocarbons called as Alkenes. Alkene contains a double bond between two carbon atoms. And the general formula for alkene is,

                                               CnH2n

Whereas in Ethene, n = 2, so
   
                                               C₂H₄

Therefore, in ethene there are two carbon atoms doubly bonded to each other via one sigma and one pi bond. Also each carbon atom is further covalently bonded to two hydrogen atoms via sigma bond as shown below,

4 0
3 years ago
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