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
lara31 [8.8K]
2 years ago
13

What is the density of a board dimensions are 5.54 cm x 10.6 cm X 199 cm and whose mass is 28.6kg

Chemistry
1 answer:
exis [7]2 years ago
4 0

Answer:

d=2.44\ g/cm^3

Explanation:

Given that,

The dimensions of the board is 5.54 cm x 10.6 cm X 199 cm.

The mass of the board is 28.6 kg.

Since, 1 kg = 1000 grams

28.6 kg = 28.6 × 1000 g = 28600 grams

Density = mass/volume

So,

d=\dfrac{28600\ g}{(5.54\times 10.6\times 199)\ cm^3}\\\\d=2.44\ g/cm^3

So, the density of a board is 2.44\ g/cm^3.

You might be interested in
A measure of the kinetic energy of particle motion within a substance is _____.
Irina18 [472]

All particles (atoms and molecules) of matter have kinetic energy because they are always in motion.

A measure of the kinetic energy of particle motion within a substance is temperature. If the particles move faster, they have more kinetic energy, and the substance has a higher temperature


5 0
3 years ago
Read 2 more answers
An astronaut is free-floating in space near a space station and it is not tethered to anything. He has some tools and a fire ext
worty [1.4K]

Hey there

the answers are

A.

and

D. He could spray the fire extinguisher in the opposite direction of the space station


hope this helps

7 0
3 years ago
Read 2 more answers
Which statement is correct
alisha [4.7K]
The answer to your question is A.
6 0
2 years ago
Read 2 more answers
What is the concentration of Htions at a pH = 11?
Lostsunrise [7]
Answer:
a) 1 x 10^-11 mol/L
b) 1 x 10^-6 mol/L
c) 1 x 10^-5 fewer H+ ions

Explanation

pH stands for Power of Hydrogen, the more acidic a substance is, the more H+ ions it has rendering the substance acidic. a pH of 1 means the concentration of H+ ions is 1 x 10^-1. A pH of 7 means the concentration of H+ ions is 1 x 10^-7 and so on.

10^-11 has 10^-5 more H+ ions than 10^-6

Hope this helps :)
5 0
3 years ago
What is the balanced form of the chemical equation shown below?
Svetradugi [14.3K]

Answer:

D

Explanation:

Double Displacement reaction

Both sides are balanced with option D

3 0
2 years ago
Other questions:
  • plz answer 7 & 8 because I dont get the answer... oh and you need to use the picture for the questions 7 & 8 thanks
    12·1 answer
  • The solubility of barium carbonate, BaCO3, is 0.0100 g/L. Its molar mass is 197.3 g/mol. What is the Ksp of barium carbonate? Ex
    12·2 answers
  • How many moles of mercury(II) oxide, HgO, are needed to pro- duce 125 g of oxygen, O2?
    14·1 answer
  • Suppose you have two identical-looking metal spheres of the same size and the same mass. One of them is solid; the other is holl
    14·1 answer
  • The industrial production of ammonia (NH3) involves reacting nitrogen gas with hydrogen gas. If 18.2 kg of ammonia is produced f
    5·1 answer
  • The climate of the continental United States is generally
    12·1 answer
  • Look closely at the rock cycle above. Imagine this rock forms just outside of the igneous intrusion at step D.
    7·1 answer
  • a helium filled balloon has a volume of 208 l and it contains 9.95 moles of gas. if the pressure of the balloon is 1.26 atm dete
    9·1 answer
  • The pendulum has the greatest kinetic energy and no potential energy when it is _____.
    13·1 answer
  • Is silicon a better conductor of electricity than sulfur
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!