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
Darya [45]
3 years ago
11

An aluminum bar was found to have a mass of 27g. Using water displacement, the volume was measured to be 10 ml. What is the dens

ity of the aluminum? Group of answer choices (27 g)/(10 ml) (10 ml )/(2.70 g) (270 g)/(10 ml) (10 ml )/(27 g)
Chemistry
1 answer:
Pavlova-9 [17]3 years ago
3 0

Answer:

2.7 g/mL:)

An aluminum bar was found to have a mass of 27g. Using water displacement, the volume was measured to be 10 ml. What is the density of the aluminum? Group of answer choices (27 g)/(10 ml) (10 ml )/(2.70 g) (270 g)/(10 ml) (10 ml )/(27 g)

You might be interested in
The volume of an automobile air bag was 66.8 L when inflated at 25 °C with 77.8 g of nitrogen gas. What was the pressure in the
Ray Of Light [21]

Answer:

\large \boxed{\text{103 kPa}}

Explanation:

We can use the Ideal Gas Law — pV = nRT

Data:

V = 66.8 L

m = 77.8 g

T = 25 °C

Calculations:

(a) Moles of N₂

\text{Moles of N}_{2} = \text{77.8 g N}_{2} \times \dfrac{\text{1 mol N}_{2}}{\text{28.01 g N}_{2}} = \text{2.778 mol N}_{2}

(b) Convert the temperature to kelvins

T = (25 + 273.15) K = 298.15 K

(c) Calculate the pressure

\begin{array}{rcl}pV & =& nRT\\p \times \text{66.8 L} & = & \text{2.778 mol} \times \text{8.314 kPa$\cdot$ L$\cdot$K$^{-1}$mol$^{-1}\times$ 298.15 K}\\66.8p & = & \text{6886 kPa}\\p & = & \textbf{103 kPa}\end{array}\\\text{The pressure in the bag is $\large \boxed{\textbf{103 kPa}}$}

3 0
3 years ago
Compare S (secondary) waves and P (primary) waves. Why do they travel at different speeds?
Amanda [17]

S waves

  • These are shear waves .
  • The motion of the medium is perpendicular to  direction of propagation of the wave .
  • They can propagate only through solids and not through gases or liquids .
  • S waves are larger .
  • They travel with less speed .

P waves

  • These are compression waves .
  • These waves produces a force along the direction of propagation .
  • They can propagate through solids, gases and liquids.
  • P waves are smaller than s waves .
  • They travel with 60% greater speed than S waves .

P-waves travel 60% faster than S-waves on average because the interior part of the Earth does not react the same way as the s wave and P wave.

8 0
3 years ago
Charge on monatomic ions: a) I b) Sr c) K d) N e) S f) In
wlad13 [49]
A) I = -1, B) Sr = +2, C) K = +1, D) N = -3, E) S = -2, F) In = +3
4 0
3 years ago
How many square millimeters are covered with paint?
Nostrana [21]

Answer: 4 mm

Explanation: Area equals base times the height. (Side times side) So if the area is 16, then what times what equals 16? Well, 4 times 4 equals 16 and all the sides of a square are equal. So 4 millimeters would be the answer.

hope this helps

7 0
3 years ago
Read 2 more answers
What are nanofluids and how they work?​
Keith_Richards [23]

Answer:

What is nanofluids?

Nanofluids are engineered suspensions of nanometer-sized solid particles in a base fluid. Suspending small solid particles in the energy transmission fluids can improve their thermal conductivity and provides an effective and innovative way to enhance their heat transfer characteristics significantly.

How nanofluids work?

Nanofluid refers to the dispersion of metal or non-metal nano-powder into traditional heat exchange media such as water, alcohol, and oil to prepare a uniform, stable and high thermal conductivity. The traditional heat exchange medium has a low thermal conductivity and has been unable to meet the growing demand for industrial engineering heat exchange. The thermal conductivity of some metal or non-metal nanoparticles is often hundreds of times higher than that of heat-conducting media. For example, common silicon carbide nanoparticles have a thermal conductivity of 170-270 W/m•K. The researchers found that if the nanoparticles can be uniformly and stably dispersed in the heat transfer medium, the thermal conductivity of the nanoparticles will be greatly improved.

3 0
2 years ago
Other questions:
  • A family of four lives in a three-bedroom house and uses an average of 900 kWh of electricity per month. The family cools their
    9·1 answer
  • The man who developed the concept that light is emitted and absorbed in bundles or packets was:
    7·2 answers
  • What is a closed container in relation to the law of conservation of matter
    9·1 answer
  • When trying to identify an unknown element, a scientist determines what other elements the unknown element reacts with chemicall
    5·2 answers
  • A mixture of two or more kinds of molecules, evenly dispersed would be a(n)
    13·1 answer
  • (Direct answer=Upvote cause I aint smart xD)
    12·1 answer
  • Picture a neutral S atom. This neutral atom will have
    7·1 answer
  • What type of molecule is acetylacetone?
    6·2 answers
  • The total pressure in a container is 37.9 psi. There are two gases in the container. Gas A exerts a pressure of 18.4 psi. What i
    5·1 answer
  • All of the following are reasons why equations or balanced EXCEPT
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!