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
Nikitich [7]
3 years ago
5

A company is interested in buying a new machine to replace their outdated equipment. However, before committing to the purchase,

the company asks the manufacturer to provide data on a certain machine's efficiency. The data suggests that with a supplied energy at a rate of 1,600 W, the machine will do useful work at a rate of 1,540 W. What's the efficiency of this particular machine? A. 103.90% B. 96.25% C. 77.00% D. 84.21%
Chemistry
2 answers:
frosja888 [35]3 years ago
6 0

Yeah its B took the PN Test


klemol [59]3 years ago
3 0
Efficiency is defined as the measure of the amount of work or energy is conserved in a certain process. At all times, in every process, work or energy is always lost or wasted due to certain interference. Not all work given is converted to useful work or energy. Thus , efficiency is calculated by dividing the energy or work output to the energy or work input then the value is multiplied by 100 to express efficiency as percentage.

Efficiency = work output / work input Efficiency = (1540 J / 1600 J) x 100= 96.25%
Thus, the answer is B.
You might be interested in
According to ________, the number of transistors that could be squeezed onto a silicon chip would double every 18 months. Metcal
kobusy [5.1K]

Answer:

It is in obedience to Moore's law

6 0
2 years ago
Read 2 more answers
A chemist adds of a calcium sulfate solution to a reaction flask. Calculate the mass in grams of calcium sulfate the chemist has
Elanso [62]

The given question is incomplete. The complete question is:

A chemist adds 0.85 L of a 0.0050M calcium sulfate to a reaction flask. Calculate the mass in grams of calcium sulfate the chemist has added to the flask. Round your answer to significant digits.

Answer: The mass in grams of calcium sulfate the chemist has added to the flask is 0.58 g

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

moles of CaSO_4 = \frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{136g/mol}

Now put all the given values in the formula of molarity, we get

0.0050=\frac{x}{136\times 0.85}

x=0.58 g

Therefore, the mass in grams of calcium sulfate the chemist has added to the flask is 0.58 g

7 0
2 years ago
Containers of ice cream are sold by volume, not by weight. Some ice cream manufacturers pump air into the ice cream before packa
Arturiano [62]
C. Adding air would add to volume. Since it's by volume not weight they'd want more volume because more volume means more money
7 0
2 years ago
Express 4,935,000 using standard scientific notation
nataly862011 [7]

Answer:

4.935×10-1

Explanation:

Take away the 0

3 0
3 years ago
An aqueous potassium iodate ( KIO 3 ) solution is made by dissolving 587 grams of KIO 3 in sufficient water so that the final vo
kotykmax [81]

Answer:

[KIO₃] = 0.548 M

Explanation:

Molarity is a sort of concentration which involves moles of solute in 1L of solution.

Volume of solution 5L

Mass of solution: 587 g

Let's convert the mass to moles (mass / molar mass)

587 g / 214 g/mol = 2.74 moles

Molarity is mol/L → 2.74 mol / 5L = 0.548 M

7 0
3 years ago
Other questions:
  • Which resonance structure would most likely create the infrared (IR) spectrum for the equilibrium geometry calculation of SCN −
    12·1 answer
  • This is the speed at which molecules or atoms move dependent on temperature and state of matter.
    14·2 answers
  • I WILL GIVE BRAINLIEST TO BEST AND MOST THOROUGH ANSWER!
    15·1 answer
  • How many moles are in 2.12g Cr2O3
    12·1 answer
  • When a negatively charged object moves in the opposite direction of an eletric field the potential energy of the object....
    8·1 answer
  • Consider the balanced equation for the following reaction:
    9·1 answer
  • 2CH2(g) + 50 (g) → 400/(g) + 2 H2O(g)
    13·1 answer
  • ¿Qué tipos de contaminantes identificamos?¿cuál de ellos tiene mayor concentración de los gases?¿Qué sucedió con la calidad del
    12·1 answer
  • In these chemical compounds, c is for carbon, o is for oxygen, n is for nitrogen, and k is for potassium. Which chemical compoun
    12·1 answer
  • What visual criterion is to be used to assess whether the crude reaction product is dry prior to semimicro distillation
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!