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
Ede4ka [16]
3 years ago
15

PLEASE HELP!!! 20 POINTS!!!

Chemistry
2 answers:
Sergio [31]3 years ago
8 0
1. True
2. True
3. False
4. True
8090 [49]3 years ago
5 0
1. False
2.False
3.Fasle
4.True
You might be interested in
How many sigma and pi bonds does it contain ch3chchco2h?
ira [324]
Answer:
            But-2-enoic acid has 11 Sigma Bonds and 2 Pi Bonds.

Explanation:
                   The sigma bonds which are formed due to head to head overlap of partally filled orbitals are shown in red color, while Pi bonds which are formed after the formation of sigma bond by overlap of orbitals perpendicular to the sigma bond are shown in blue color.

8 0
3 years ago
Nitrogen has an atomic number of 7; therefore, it has ______ electrons in its outermost electron shell.
galina1969 [7]
it has 5 electrons in it's outermost shell.
s 2e- , p 5e-
4 0
3 years ago
The size of the chosen symbols on a graph may be used to indicate the:
Tresset [83]
Uncertainty of the data  hope its help you

6 0
3 years ago
Additional solute is added to a saturated solution of a solid and a liquid after being heated above room temperature. Once no mo
PSYCHO15rus [73]

Answer:

After the solution is heated, but before additional solute is added

Explanation:

An unsaturated solution is a solution that contains less solute than it can normally hold at a given temperature. Hence an unsaturated solution can still dissolve more solute.

When the solution is heated, the saturated cold solution becomes an unsaturated hot solution which is capable of dissolving more solute at this point.

Once more solute is dissolved, the solution becomes saturated again just before it begins to cool since no more solute dissolves in the solution at some point before cooling and addition of seed crystals.

4 0
3 years ago
The instruction booklet for your pressure cooker indicates that its highest setting is 11.8 psipsi . You know that standard atmo
zavuch27 [327]

<u>Answer:</u> The temperature at which the food will cook is 219.14°C

<u>Explanation:</u>

To calculate the final temperature of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are the initial pressure and temperature of the gas.

P_2\text{ and }T_2 are the final pressure and temperature of the gas.

We are given:

P_1=14.7psi\\T_1=273K\\P_2=(14.7+11.8)psi=26.5psi\\T_2=?

Putting values in above equation, we get:

\frac{14.7psi}{273K}=\frac{26.5psi}{T_2}\\\\T_2=\frac{26.5\times 273}{14.7}=492.14K

Converting the temperature from kelvins to degree Celsius, by using the conversion factor:

T(K)=T(^oC)+273

492.14=T(^oC)+273\\\\T(^oC)=219.14^oC

Hence, the temperature at which the food will cook is 219.14°C

7 0
3 years ago
Other questions:
  • Which is the best metal to use in an alloy to increase its electrical conductivity?
    8·2 answers
  • In the following reaction, what coefficient will be written before the oxygen molecule (O2) to balance the chemical equation? (1
    11·2 answers
  • When changing lanes, you should:
    12·1 answer
  • What does aluminum hydroxide and calcium sulfate produce
    8·1 answer
  • What is 60 kilos in stones and pounds?
    10·1 answer
  • 7.8g of dioxide would be produced from how many moles of potassium chlorate
    7·1 answer
  • What is the work function of gold metal in kJ/mol if light with λ = 234 nm is necessary to eject electrons?
    14·1 answer
  • 2 main reasons why we have<br> seasons.
    7·1 answer
  • A reaction is 50% complete in 2 hours and 75% complete in 4 hours.
    11·1 answer
  • a 433 l tank holds helium gas at -48 °c with a pressure of 1.24 atm. how many moles of gas are in the tank?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!