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
Juliette [100K]
3 years ago
14

NEED HELP ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Chemistry
2 answers:
Anton [14]3 years ago
4 0

The answer would be A: Simple machines are tools that make work easier.

Nadya [2.5K]3 years ago
4 0
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Simple machined are tools that make work easier. Option A is correct.

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

You might be interested in
A compound contains nitrogen and a metal. This compound goes through a combustion reaction such that compound X is produced from
tia_tia [17]

Answer:

The correct answer is: X is nitrogen dioxide, and Y is a metal oxide

Explanation:

Combustion of compound of containing nitrogen and metal will give nitrogen  dioxide and metal oxide as product. During combustion reaction a compound reacts with oxygen in order to yield oxides of elements present in the compound.

The general equation is given as:

4M_3N_x+7xO_2\rightarrow 4xNO_2+6M_2O_x

Hence, the correct answer is :X is nitrogen dioxide, and Y is a metal oxide.

6 0
3 years ago
How many mL of a stock 50% (w/v) KNO3 solution are needed to prepare 250 mL of a 20% (w/v) KNO3 solution?
Andre45 [30]

Answer:

100ml of a stock 50% KNO3 solutions are needed to prepare 250ml of a 20% KNO3 solution.

Explanation:

In the given question it is mentioned that

     S1=50%

      V2=250ml

      S2= 20%

We all know that

                     V1S1=V2S2

                     ∴V1=  V2×S2÷S1

                     ∴V1=  V2S2×1/S1

                      ∴V1= 250×20÷50

                       ∴V1= 100ml

 

6 0
3 years ago
PLEASE HELP ME NOW I NEED HELP What will happen if a single crystal is introduced into a super-saturated solution? a. The crysta
Klio2033 [76]

Answer:

c

It excess out the crystal

4 0
3 years ago
Is the gravity a black hole strong enough to keep light from escaping True or False
puteri [66]

Answer:

The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. ... Moving at close to the speed of light, these particles ricochet off the event horizon and get hurled outward along the black hole's axis of rotation

(True)

4 0
2 years ago
If an atom contains 12 protons and 10 neutrons, what's its mass number?
user100 [1]
A = Z + n

A = 12 + 10

A = 22

Answer C

hope this helps!
7 0
3 years ago
Other questions:
  • What type of energy is stored in the earths crust and produces earthquakes
    8·2 answers
  • If the ph of a 1.00-in. rainfall over 1400 miles2 is 3.70, how many kilograms of sulfuric acid, h2so4, are present, assuming tha
    11·1 answer
  • The concentration of 1130+ in a solution is found to be 1.75 X 10-8 M 250C. Find [OH].
    11·1 answer
  • Which statement accurately describes non renewable energy sources ?
    8·2 answers
  • Could there be non carbon based life?
    5·1 answer
  • Is/are determined by a genetic trait passed on from parents to their children
    6·1 answer
  • A sample of water vapor condenses to form liquid water. What change in water
    5·1 answer
  • Balance equation P2O5 + H20 - - - - &gt; H3PO4<br> Help me.....
    8·1 answer
  • How much NaOH (in moles) must be added to 1 L of a buffer solution that is 1.8 M in acetic acid and 1.2 M in sodium acetate to r
    9·1 answer
  • Some one have a full conversation with me I am so bored
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!