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
puteri [66]
2 years ago
11

What is the principle of simple machine?​

Chemistry
1 answer:
sergeinik [125]2 years ago
5 0
<h2>Answer:</h2>

<h2>A machine produces force and controls the direction and the motion of force, but it cannot create energy. A machine's ability to do work is measured by two factors. These are (1) mechanical advantage and (2) efficiency.</h2>

<h2>HOpe this helps you ❤️</h2>

<h2>MaRk mE aS braiNliesT ^_^</h2>
You might be interested in
Why does common table salt (NaCl) have a high melting point?
schepotkina [342]
The correct answer is c
8 0
2 years ago
(i) 1s 2 2s 2 2p 6 3s 1 (ii) 1s 2 2s 2 2p 6 3s 2 (iii) 1s 2 2s 2 2p 6 3s 2 3p 1 (iv) 1s 2 2s 2 2p 6 3s 2 3p 4 (v) 1s 2 2s 2 2p 6
Marizza181 [45]

Answer:

 (V) 1s 2 2s 2 2p 6 3s 2 3p 5

Explanation:

Electron Affinity can be defined as the energy associated with a neutral atom, when an electron is added to form a negative ion.

1s 2 2s 2 2p 6 3s 2 3p 5 , is the electronic configuration of Chlorine.

The electron affinity is positive because it is an exorthermic reaction, meaning that, energy was released during the addition of an electron to the atom.

Cl (g)  +  e-   ------->  Cl- (g)    = -349KJ/mol

5 0
2 years ago
2 Calculate What is the density of a liquid with a mass of 17.4g<br> and a volume of 20 mL?
jolli1 [7]

Answer:

P= 0.87g/mL or 0.87g/cm^3

Explanation:

P=m/v

P=density

P=17.4g/20mL

P= 0.87g/mL

1mL=1cm^3

8 0
3 years ago
Balance the following equation in acidic conditions. phases are optional.
Elanso [62]
This is an oxidation reduction reaction
oxidation happens when the species gives out electrons.Oxidation state of the element Cu increases from 0 to +2
Cu  ---> Cu²⁺ +2e --1)
Reduction happens when the species gains electrons.
Oxidation state of N reduces from +5 to +2
4H⁺ + NO₃⁻ + 3e ---> NO + 2H₂O --2)
To balance the reactions, number of electrons need to be balanced. 
Multiply 1st reaction by 3
Multiply 2nd reaction by 2
3Cu  ---> 3Cu²⁺ + 6e
8H⁺ + 2NO₃⁻ + 6e ---> 2NO + 4H₂O
add the 2 equations 
3Cu + 8H⁺ + 2NO₃⁻ --> 3Cu²⁺ + 2NO + 4H₂O
add 6NO₃⁻ ions to each side 
3Cu + 8HNO₃ --> 3Cu(NO₃)₂ + 2NO + 4H₂O
the balanced redox reaction equation is as follows;

3Cu(s) + 8HNO₃(aq) --> 3Cu(NO₃)₂ (aq)+ 2NO(g) + 4H₂O(l)
4 0
3 years ago
Which of the following substances
andreev551 [17]
A, Saline NaCI and H,0
8 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose 550.mmol of electrons must be transported from one side of an electrochemical cell to another in 49.0 minutes. Calculate
    10·1 answer
  • The speed of light in a vacuum is constant. If the frequency of a light wave increases, what happens to the wavelength of the li
    8·1 answer
  • A student analyze two diagrams of a nitrogen atom. both diagram shows seven protons in the nucleus, but the number of neutrons d
    14·1 answer
  • a steel cylinder is left out in the sun the pressure at 2:00 pm was 1014 kpa at 33.0 c at 7:00 am at a temperature of 21.4c what
    14·1 answer
  • Which of the following best describes the physical nature of the Earth's lithosphere and the asthenosphere?
    6·1 answer
  • Assignment
    14·1 answer
  • Biochemistry which studies the chemical composition, structure, and the reaction of compounds found in non-living organisms.
    5·2 answers
  • Help! question in picture!
    6·2 answers
  • • What is produced at the end of the cell cycle? How do they compare to each other and
    8·1 answer
  • It would be nice if someone HELPED. During an experiment, you observe that two charged balloons repel each other. When you bring
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!