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
Gwar [14]
3 years ago
8

Hii can someone help me pls this is the last question

Chemistry
1 answer:
lara31 [8.8K]3 years ago
8 0

Answer:

B. 126

Explanation:

the scale is 1 to 42 so the scale would be:

3 cm:x cm

3 * 42 = 126 cm

You might be interested in
Carbohydrates are found in ..... Question 5 options: water alcohols plastics starchy sugar-filled foods mutil choice
nirvana33 [79]

starchy sugar filled foods contain carbohydrates since carbohydrates are sugar chains

5 0
3 years ago
which of these stars is least likely to be categorized as a supergiant? A. Betelgeuse B. Pollux C. Sirius A D. Sun Reset Submit
Vesna [10]

Answer: The correct answer is option D.

Explanation: Super-giant stars are the stars which are greater than Sun. They have a mass hundred time greater than Sun and can be thousand times greater than Sun.

The masses of the stars are represented in Solar masses which is the mass of the Sun.

Mass of Betelgeuse = 20 Solar masses

Mass of Pollux = 1.7 Solar masses

Mass of Sirius = 2.02 Solar masses

Mass of Sun = 1 Solar mass.

As, the mass of Sun is the least from the given stars. Hence, it is least considered as a super-giant.

5 0
4 years ago
A 9.75 L 9.75 L container holds a mixture of two gases at 41 ° C. 41 °C. The partial pressures of gas A and gas B, respectively,
Triss [41]

Answer:

The total  pressure P = 1.642 atm

Explanation:

From the dalton's law

Total pressure of the mixture is

P = P_{A} + P_{B} + P_{C} ----- (1)

P_A = 0.419 atm

P_B = 0.589 atm

P_C = \frac{nRT}{V}

n = 0.24 mole

R = 0.0821 \frac{L.Atm}{K.mol}

T = 41 °c = 314 K

P_C = \frac{(0.24)(0.0821)(314)}{9.75}

P_C = 0.634 atm

From equation (1)

P = 0.419 + 0.589 + 0.634

P = 1.642 atm

Thus the total  pressure P = 1.642 atm

3 0
4 years ago
A student prepares a mixture of sugar and coffee. The sugar seems to disappear as it mixes with the coffee.
butalik [34]

Answer:homogeneous

Explanation:

4 0
4 years ago
Read 2 more answers
Match the vocabulary terms to their definitions.
vesna_86 [32]

Answer:

1. The standard metric unit of length is a meter.

2. A proposed explanation for a scientific problem is a hypothesis.

3. The standard unit of volume is a liter.

4. The curved top surface of a liquid column is the meniscus.

5. A quantity in an experiment that remains unchanges or constant is a controlled variable (control)

6. The amount of matter in an object is mass.

7 0
4 years ago
Read 2 more answers
Other questions:
  • If a car passes a pedestrian, a change in pitch is __________.
    15·2 answers
  • How many more electrons can fit within the valence shell of a oxygen atom?
    12·1 answer
  • How are a sodium atom and a sodium ion alike?
    6·1 answer
  • Dr. Brown's science class is studying changes in particle motion during phase changes by adding a few pieces of dry ice to a fla
    7·2 answers
  • Wegner's theory that the continents slowly moved over Earth's surface became known as _________ .
    6·1 answer
  • Noted scientist Dr. Elsa Birde described the effect of adding a mixture of dried apples and raisins to the previous feed of sunf
    14·2 answers
  • If the 3.90 m solution from Part A boils at 103.45 âC, what is the actual value of the van't Hoff factor, i? The boiling point o
    13·1 answer
  • The Richter scale is used to compare the___________ of earthquakes.
    13·1 answer
  • Which of the following units can be used to measure the mass of a grain of salt?
    11·2 answers
  • Viruses
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!