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
denis23 [38]
3 years ago
14

Question 1. Count Sergei Lvovich Levitsky invented which of the following? A) Collodion processB) Digital imaging C) Dry plates.

D) Bellows camera. Question 2. What substance was the first photograph made from? A) Bitumen B) Silver.C) Lemon juice.D) Acidic acid. Question 3. The first commercially available digital camera was which of the following? A) Kodak DCS 100 B) Kodak Brownie C) Leica 1000 D) None of the above.
Chemistry
1 answer:
Dmitry_Shevchenko [17]3 years ago
6 0
1. <span>Count Sergei Lvovich Levitsky invented the Bellows camera. The correct option among all the options that are given in the question is the last option or option "D".

2. The substance with which the first photograph was made from,  was Bitumen. The correct option among all the options given in the question is the first option or option "A".

3. Kodak DCS 100 was the first commercially available digital camera. The correct option among all the options that are given in the question is the first option or option "A".</span>
You might be interested in
Mole used in a chemistry sentence
katrin [286]
One mole of NaOH (Sodium hydroxide) is equal to 39.997 grams of NaOH. 
7 0
3 years ago
If the percent transmittance is is 64.9 in 0.2M standard CuSO4, what is the absorption?
Natali [406]
Explain it a little more ?
5 0
3 years ago
Help please for chemistry class
IRISSAK [1]

Answer:

option c is correct

Explanation:

the addition of catalyst does not effect the position or equilibrium constant and increase the forward and backward reaction in equal rates so no effect would be observed

3 0
3 years ago
Calculate the ΔG°rxn using the following information at 298K. 2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l) ΔG°rxn = ? ΔH°f (kJ/mol) -2
Mkey [24]

Answer:

ΔG°rxn = +50.8 kJ/mol

Explanation:

It is possible to obtain ΔG°rxn of a reaction at certain temperature from ΔH°rxn and S°rxn, thus:

<em>ΔG°rxn = ΔH°rxn - T×S°rxn (1)</em>

In the reaction:

2 HNO3(aq) + NO(g) → 3 NO2(g) + H2O(l)

ΔH°rxn = 3×ΔHfNO2 + ΔHfH2O - (2×ΔHfHNO3 + ΔHfNO)

ΔH°rxn = 3×33.2kJ/mol + (-285.8kJ/mol) - (2×-207.0kJ/mol + 91.3kJ/mol)}

ΔH°rxn = 136.5kJ/mol

And S°:

S°rxn = 3×S°NO2 + S°H2O - (2×S°HNO3 + S°NO)

ΔH°rxn = 3×0.2401kJ/molK + (0.0700kJ/molK) - (2×0.146kJ/molK + 0.2108kJ/molK)

ΔH°rxn = 0.2875kJ/molK

And replacing in (1) at 298K:

ΔG°rxn = 136.5kJ/mol - 298K×0.2875kJ/molK

<em>ΔG°rxn = +50.8 kJ/mol</em>

<em />

7 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST IF YOU ANSWER WITHIN 5 MINUTES
tensa zangetsu [6.8K]

Answer:

This is and ADDITION REACTION

Explanation:

Because your putting a compound and an element together

6 0
3 years ago
Read 2 more answers
Other questions:
  • Look at the image below:
    12·1 answer
  • A sample of potassium nitrate (49.0 g) is dissolved in 101 g of water at 100 °C, with precautions taken to avoid evaporation of
    6·1 answer
  • How could you separate the isomers of pentane? 1.react with methane 2.heating in a beaker 3.distillation 4.filtering
    14·1 answer
  • A 3.2-gram sample of air contains 0.000 74 gram of hydrogen cyanide. Determine the concentration, in parts per million, of the h
    5·1 answer
  • Which of these is an example of a physical change?
    15·2 answers
  • A 0.085 M solution of a weak acid has a pH of 2.68. Determine the Ka value for this acid.
    6·1 answer
  • PLZ SOMEONE HELP THANKS:))))<br> materials and conclude which is best to use. Full explanation
    14·1 answer
  • Which part of homeostasis is this adorable puppy balancing out with his little stuffed animal buddy?
    14·1 answer
  • Define the molecular of a substance​
    10·1 answer
  • Is density qualitative or quantitative poetry?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!