1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
trasher [3.6K]
3 years ago
8

When 1.0 g of solid NaOH (Triangle Hsoln = –445.1 kJ/mol) dissolves in 10 L of water, how much heat is released?

Chemistry
2 answers:
victus00 [196]3 years ago
8 0

Answer:

11.1 kJ

Explanation:

oee [108]3 years ago
4 0
The heat being released is calculated by multiplying the amount of NaOH used for making the solution. We are given a delta H that is equal to -445.1 kJ / mol. This value is per mole NaOH. Calculation is as follows:

-445.1 kJ / mol NaOH (1.0 g NaOH ) ( 1 mol NaOH / 40 g NaOH ) = -11.1 kJ
You might be interested in
How many moles of zinc are in 4.70 kg of zinc?
faust18 [17]
First we convert kg to g
1kg =1000g
4.70=x(gram)
4.70×1000÷1=4700g
now:
number of moles=mass÷molarmass
number of moles=4700÷65.4
number of moles=71.86moles.
6 0
3 years ago
Read 2 more answers
Though alchemists were often superstitious, they left a rich legacy for modern chemists. What was their main contribution?
topjm [15]

though alchemists were often superstitious, they left a rich legacy of modern chemists. what was their main contribution-

Explanation:

they were the first to preform experiments.

5 0
3 years ago
A student has a block of wood. She places it on a wooden desk. She uses a spring scale to measure how much force is needed to sl
yarga [219]
D:friction



Reason:because they are trying different types of things to rub against it and see if it will slow it down



Please give me the bran list answer !
6 0
2 years ago
Read 2 more answers
A paint chip is placed in ethanol and curls what type of paint is it
Licemer1 [7]

Answer:

it is probably acrylic or latex

Explanation:

3 0
2 years ago
Under standard-state conditions, which of the following species is the best reducing agent? a. Ag+ b. Pb c. H2 d. Ag e. Mg2+
eimsori [14]

<u>Answer:</u> The correct answer is Option b.

<u>Explanation:</u>

Reducing agents are defined as the agents which help the other substance to get reduced and itself gets oxidized. They undergo oxidation reaction.

X\rightarrow X^{n+}+ne^-

For determination of reducing agents, we will look at the oxidation potentials of the substance. Oxidation potentials can be determined by reversing the standard reduction potentials.

For the given options:

  • <u>Option a:</u>  Ag^+

This ion cannot be further oxidized because +1 is the most stable oxidation state of silver.

  • <u>Option b:</u>  Pb

This metal can easily get oxidized to Pb^{2+} ion and the standard oxidation potential for this is 0.13 V

Pb\rightarrow Pb^{2+}+2e^-;E^o_{(Pb/Pb^{2+})}=+0.13V

  • <u>Option c:</u>  H_2

This metal can easily get oxidized to H^{+} ion and the standard oxidation potential for this is 0.0 V

H_2\rightarrow 2H^++2e^-;E^o_{(H_2/H^{+})}=0.0V

  • <u>Option d:</u>  Ag

This metal can easily get oxidized to Ag^{+} ion and the standard oxidation potential for this is -0.80 V

Ag\rightarrow Ag^{+}+e^-;E^o_{(Ag/Ag^{+})}=-0.80V

  • <u>Option e:</u>  Mg^{2+}

This ion cannot be further oxidized because +2 is the most stable oxidation state of magnesium.

By looking at the standard oxidation potential of the substances, the substance having highest positive E^o potential will always get oxidized and will undergo oxidation reaction. Thus, considered as strong reducing agent.

From the above values, the correct answer is Option b.

8 0
3 years ago
Other questions:
  • What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 10.2?
    13·2 answers
  • Ross (he was on break) pours water at 6.0 c into a container with a pressure of 23. torr. he then boils the water to a temperatu
    12·1 answer
  • Which of the following is necessary to increase the rate of a reaction? A. a decrease in the frequency of collisions B. an incre
    12·2 answers
  • Helpppppppppppp!!!!!!!!
    10·1 answer
  • What does burning bread in a toaster demonstrate? (a) Energy can create a change. (b) Energy can cause motion. (c) A toaster cre
    12·1 answer
  • 1. How many grams of Iron are in 1,5 moles of Iron?
    6·1 answer
  • The breaking of _____________________ bonds in food releases energy for your body to use.
    7·1 answer
  • Which equation would be used to calculate the rate constant from initial<br> concentrations?
    15·2 answers
  • Warm air masses tend to originate from:
    9·2 answers
  • Calculate the density of a sample of 1.00 mole of nh3 at 793mmhg and -9.00 c
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!