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
Arisa [49]
3 years ago
6

?/1

Chemistry
1 answer:
nasty-shy [4]3 years ago
6 0

Answer: The different amount of lights in his classroom

Explanation:it would be the lights because the dependent ariable would be how sleepy his students who get or be

You might be interested in
HELP ASAP PLEASE. Thanks
aliya0001 [1]
Answer :

= 108


Explanation
7 0
2 years ago
Which subatomic particle has negligible mass and travels around outside the nucleus?
nikdorinn [45]
Electrons travel around the nucleus
6 0
3 years ago
How long it takes a 100 watt light bulb to use 10,000 J of electrical energy?​
vlabodo [156]

Answer:

A 100-watt light bulb takes 100 seconds to use 10,000 J of electrical energy.

Explanation:

Power refers to the amount of work done (or energy consumed) per unit of time. It is usually measured in watts (W), which is equal to 1 Joules per second (\frac{J}{s})

So, by definition, to calculate the power consumed or supplied in a time interval the following expression is used:

P=\frac{W}{t}

where P is the power measured in Watts, W is the work measured in Joules, and t is the time measured in seconds.

In this case:

  • P=100 Watt
  • W= 10,000 J
  • t= ?

Replacing:

100 Watt=\frac{10,000 J}{t}

Solving:

t=\frac{10,000 J}{100 Watt}

t=100 seconds

<u><em> A 100-watt light bulb takes 100 seconds to use 10,000 J of electrical energy.</em></u>

<u><em></em></u>

7 0
3 years ago
1. For a mixture of pure hexane and pure dimethylformamide, the dimethylformamide layer will be found as:______.a. the top layer
castortr0y [4]

Answer:

1.  the bottom layer

2. aqueous HCI

3.  the top layer

4.aqueous NaOH

5. mostly in the diethyl ether layer

Explanation:

Pure dimethylformamide is considerably more polar than hexane hence thee two solutions will form two phases with the pure dimethylformamide as the bottom layer.

If we want to extract aniline from chloroform, HCl must be added in order to give a salt that can be extracted into the aqueous layer.

For a mixture of methylene chloride and diethyl ether, the diethyl ether layer will be found as the top layer since it is considerably less polar than  methylene chloride.

Benzyl alcohol can be extracted from a solution of chloroform by adding NaOH and extracting it into an aqueous layer.

A large partition coefficient for the extraction of naphthalene into diethyl ether from water means that naphthalene will be found mostly in the diethyl ether layer.

3 0
2 years ago
How many meters are in one yard? 1m=1.09​
GuDViN [60]

Answer:

0.9144, hoped I helped

4 0
2 years ago
Read 2 more answers
Other questions:
  • What forms of matter exists that are not made of chemical bonds?
    13·1 answer
  • 7. A pastry chef bakes a cheesecake. What is this an example of?* O Physical Change O Physical Property Chemical Change Chemical
    8·1 answer
  • Waves pass through earth layers​
    15·1 answer
  • Explain why are metals good conductors and why covalent bonds are not
    8·1 answer
  • Pure phosgene gas (COCl2), 0.0340 mol, was placed in a 1.50−L container. It was heated to 700.0 K, and at equilibrium, the press
    6·1 answer
  • As the vibration of molecules increase, the_______ of the substance increases
    8·1 answer
  • AgNO3 (aq) +<br> Cu(s) —<br> Cu(NO3)2 (aq) +<br> | Ag(s)<br> What is the integer?
    12·1 answer
  • Sofia is trying to find the density of a 25.0 g irregularly shaped solid. She filled a graduated cylinder with 25.0 mL of water.
    6·2 answers
  • How does SI help scientists in different<br> parts of the world?
    7·1 answer
  • What is the name of the group that contains elements that are difficult to extract from nature?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!