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
Anna007 [38]
3 years ago
7

true or false, Discovering which of two materials can scratch the other is a way to compare the hardness of the materials

Chemistry
2 answers:
Shkiper50 [21]3 years ago
7 0
True, the hardness of all materials in relative <span />
Anton [14]3 years ago
7 0
This answer is true :) 
You might be interested in
what method can be used to seperate parts of liquid mixture wwhen the entire mixture can pass through a filter
QveST [7]
Distillation is the <span>method that can be used to seperate parts of liquid mixture when the entire mixture can pass through a filter.</span>
6 0
4 years ago
Balance this equation. Not all spots have to have a number.
Lisa [10]

2Na+2H2O----2NaOH+H2

3 0
3 years ago
What is scientific "law"?
Natalka [10]
Based on (repeated) experiments or observations, that describe or predict a range of natural phenomena. the answer is c (sorry if i’m incorrect)
4 0
3 years ago
Which statement is the best example of pseudoscience?
pentagon [3]
Mary thinking her astrological sign, Leo, is a perfect fit for her personality is a belief in pseudoscience because there is not scientific evidence confirming such beliefs.
The answer is the second option.
8 0
3 years ago
Read 2 more answers
A 2.5 L container holds a sample of hydrogen gas at 291 K and 180 kPa.
netineya [11]

Answer:

The new temperature will be 565.83 K.

Explanation:

Gay Lussac's law establishes the relationship between the temperature and the pressure of a gas when the volume is constant. This law says that the pressure of the gas is directly proportional to its temperature. This means that if the temperature increases, the pressure will increase; or if the temperature decreases, the pressure will decrease.

In other words, Gay-Lussac's law states that when a gas undergoes a constant volume transformation, the ratio of the pressure exerted by the gas temperature remains constant:

\frac{P}{T} =k

When an ideal gas goes from a state 1 to a state 2, it is true:

\frac{P1}{T1} =\frac{P2}{T2}

In this case:

  • P1= 180 kPa
  • T1= 291 K
  • P2= 350 kPa
  • T2= ?

Replacing:

\frac{180 kPa}{291 K} =\frac{350 kPa}{T2}

Solving:

T2=350 kPa*\frac{291 K}{180 kPa}

T2= 565.83 K

<u><em>The new temperature will be 565.83 K.</em></u>

6 0
3 years ago
Other questions:
  • Gastric juices have a pH of 1 or 2. This would indicate which of the following?
    14·1 answer
  • A tank contains 9000 L of pure water. Brine that contains 20 g of salt per liter of water is pumped into the tank at a rate of 2
    5·1 answer
  • If the vapor's volume were to be incorrectly recorded as 125ml, how will this error affect the calculated molar mass of the unkn
    11·1 answer
  • Amylose differs from amylopectin in that amylose ________. A) Forms a helix and no branch points B) Is highly branched and amylo
    8·1 answer
  • "describe the equilibrium state of a reversible enzyme-catalyzed chemical reaction"
    11·1 answer
  • Help me. Dmskdjjddjjcjcfjfjgjghhffufuf
    15·1 answer
  • Someone please help me it’s an assessment on Stochiometry
    11·1 answer
  • A chemist titrates 190.0 mL of a 0.8125 M ammonia (NH) solution with 0.3733 M HCl solution at 25 °C. Calculate the pH at equival
    13·1 answer
  • A car moved 20 km East and 60 km West. What is the distance?
    13·1 answer
  • Which of the following is a fast change to Earth's surface?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!