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fiasKO [112]
3 years ago
14

Chocolate candy melting in your hand is what type of heat transfer

Chemistry
1 answer:
gregori [183]3 years ago
6 0
The answer to that is: Conduction
You might be interested in
Question 12 of 15
Vladimir [108]

Answer:

A. The reactants are changed to form the products.

Explanation:

Chemical reactions are reactions that involves a change in the chemical composition of substances involved while a nuclear reaction is the process of fusing together or splitting the nucleus of an atom. According to this question, matter is said to undergo both types of reaction.

However, one similarity in both chemical and nuclear reactions is that substances called REACTANTS are changed to form PRODUCTS. In nuclear reaction, the atoms joined or split are the reactants while the ones formed are the products.

8 0
3 years ago
What volume of a 0.295 M nitric acid solution is required to neutralize 24.8 mL of a 0.107 M potassium hydroxide solution
KengaRu [80]

Answer: 9.00 mL

Explanation:

M_{A}V_{A}=M_{B}V_{B}\\(0.295)V_{A}=(0.107)(24.8)\\V_{A}=\frac{(0.107)(24.8)}{(0.295)} \approx \boxed{9.00 \text{ mL}}

4 0
2 years ago
A weak acid is titrated with 0.1236 M NaOH. From the titration curve you determine that the equivalence point occurs after exact
MrRa [10]

<u>Answer:</u> The volume of NaOH required at the half-equivalence point is 6.21 mL

<u>Explanation:</u>

The chemical equation for the reaction of a weak acid with NaOH follows:

HA+ NaOH\rightarrow NaA+H_2O

From the equation, we can say that NaOH and weak acid is present in a 1 : 1 ratio.

We are given:

Volume of NaOH required at equivalence point = 12.42 mL

The volume of NaOH required at half-equivalence point will be = \frac{12.42mL}{2}=6.21mL

Hence, the volume of NaOH required at the half-equivalence point is 6.21 mL

7 0
3 years ago
What mass of Ca(OH)2 is needed to make 1250ML of a .75M solution?
Setler79 [48]

Answer:

69.4kg

Explanation:

mole =volume/1000 * mole conc.

=1250/1000 * 0.75

mole =0.9

:• mole =mass /molar mass

mass =0.9*[40+32+2]

=69.4kg

5 0
3 years ago
In the protonated form of lysine, the positive charge is localized on one nitrogen atom. In the protonated form of arginine, the
oksano4ka [1.4K]

Answer:

pK_a of arginine is higher than that of lysine.

Explanation:

1. According to the Bronsted-Lowry acid-base theory, a stronger base will have a weak conjugate acid.

The positive charge is more stable on sp^3 hybrid atom as compared to sp^2 hybrid atom.

Therefore, arginine is more basic as compared to lysine.

2. Moreover, 3 nitrogen atoms are present in arginine that has the capability to accept acidic protons as compared to the one nitrogen that is present in lysine.

Higher the pK_a, higher will be the basicity.

Therefore, pK_a of arginine is higher than that of lysine.

7 0
3 years ago
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