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
frozen [14]
3 years ago
5

Ch 9 Chemical Reactions

Chemistry
1 answer:
hodyreva [135]3 years ago
8 0

Answer:

Ah ha ha lol

Explanation:

You might be interested in
Gasoline is a hydrogen and carbon compound. It is mixed with air in the carburetor of a car. What conditions within the carburet
anzhelika [568]
A poor ratio of Oxygen will cause incomplete combustion and the consequent deposit of carbon.
8 0
4 years ago
Carbon, hydrogen, and oxygen are always found in what type of molecule?
Snowcat [4.5K]
Carbohydrates, proteins, lipids, and Nucleic Acids.

3 0
4 years ago
Chemistry!! Please help!!
cluponka [151]

Answer:

4.993 ×10⁻¹¹ J

Explanation:

The <em>nuclear binding energy</em> is the energy equivalent to the mass defect.

The <em>mass defect</em> is the difference between the mass of a nucleus and the sum of the masses of its nucleons.

<em>Calculate the mass defect </em>

  16 p = 16 × 1.007 28 u =  16.116 48  u

  16 n = 16 × 1.008 67 u =  16.138 72  u

Total mass of nucleons = 32.255 20 u

             - Mass of S-32 = <u>31.972 070 u </u>

                 Mass defect =  0.283 13   u

Convert the <em>unified atomic mass units to kilograms</em>.

Mass defect

= \text{0.283 13 u} \times \frac{ \text{1.66 06} \times 10^{-27} \text{ kg}}{\text{1 u}}

= 4.700 \times 10^{-28} \text{ kg}

Use Einstein’s equation to <em>convert the mass defect into energy</em>

E = mc^{2}

E = 4.7000 \times 10^{-28} \text{ kg} \times (2.998 \times 10^{8} \text{ m}\cdot\text{s}^{-1})^{2} = 4.224 \times 10^{-11} \text{ J}

4 0
4 years ago
1. How much heat (in calories) is needed to raise 20 g of H2O from 5°C to 40°C? (c = 1.0 cal/g °C)
KIM [24]

Answer:

700 calories

Explanation:

Using the formula below:

Q = m × c × ∆T

Where;

Q = amount of heat required (calories)

m = mass of substance (g)

c = specific heat of substance (cal/g°C)

∆T = change in temperature (°C)

According to this question, the following information was provided;

Q = ?

m = 20g

c = 1.0 cal/g °C

∆T = 40°C - 5°C = 35°C

Using the formula; Q = m × c × ∆T

Q = 20 × 1 × 35

Q = 700 calories

Hence, 700 cal of heat energy is needed to raise 20 g of H2O from 5°C to 40°C.

6 0
3 years ago
2. Which substance has the greatest molecular
storchak [24]

Answer:

Choice 4 easy

Explanation:

4 0
3 years ago
Other questions:
  • Which monosaccharide commonly found in all disaccharides?
    12·2 answers
  • Ethene is converted to ethane by the reaction
    6·1 answer
  • The rate of disappearance of HBr in the gas phase reaction 2HBr(g) → H2 (g) I2 (g) is 0.190 M s-1 at 150°C. The rate of appearan
    13·1 answer
  • 3h2(g)+o3(g) 3h20(g)<br><br> arrow after the o3(g)<br><br>whats the overall enthalpy?
    7·1 answer
  • The diagram shows a ball resting at the top of a hill. A ball is at the top of a slope at point X. The bottom of the slope is po
    13·2 answers
  • There is strong scientific evidence that individual phytochemical supplements safely provide health benefits.. True or False
    5·1 answer
  • Hurry 20pts
    14·1 answer
  • A student would like to test the effect of eating a lot of candy on
    13·2 answers
  • Do the multiplication and show the answer with the correct significant figures.
    11·2 answers
  • What is the formula for this bond?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!