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
nikdorinn [45]
3 years ago
12

PLEASE HELP ME!!!

Chemistry
2 answers:
Maru [420]3 years ago
7 0

Answer:

..............=2100

ohaa [14]3 years ago
4 0

Answer:

1045

Answer: 1045 J of energy was released on cooling the down the water from 20 °C to 10 °C.

You might be interested in
Which letter in the diagram above represents a mountain range in the ocean floor
DIA [1.3K]

THE QUESTION:which letter in the diagram above represents a mountain range in the ocean floor  

A.Letter B  

B.letter D  

C.letter E  

D.letter F

THE ANSWER: Based on my research, none of these are truly correct, as A is actually correct. However, I would highly suggests going with B, as it resembles mountains in shape.

5 0
3 years ago
Calculate the amount of copper (in moles) in a 45.2 g pure copper sheet
tangare [24]

Answer:

0.712 mol

Explanation:

The easiest way to do this is to use a proportion.

1 mol of copper = 63.5 grams (check this using your periodic table).

x mol of copper = 45.2 grams

1/x = 63.5 / 45.2              Cross multiply

63.5 x = 1 * 45.2              Divide by 63.5

x = 45.2/63.5

x = 0.712 mol                   Answer to 3 sig digs

8 0
3 years ago
How can you increase the amount of work done when you lift a book explain
Gnoma [55]
<h2>Work done = mgh </h2>

Explanation:

  • In this case, while lifting the book we are working against the force of gravity.

Using the Newton's laws, we can find the force F required for lifting the book having mass (m) and acceleration due to gravity (g) that is ;

  • F = mg

and, the change in the position of the book that is Δx (Height)

→ Δx = Final position - Initial position

which is only the height, then the amount of work done will be calculated by :

W= mgh

  • Where W = Work Done

m = Mass of the Body

g = Acceleration due to Gravity

h = Height of Body being displaced

4 0
2 years ago
4) How many grams are there in 7.40 moles of AgNO3
Ludmilka [50]

Answer:

1260 grams

Explanation:

3 0
3 years ago
1. What is a food web?
Anuta_ua [19.1K]

Answer:

a producer and consumer relationship how several food chains and related.

5 0
2 years ago
Read 2 more answers
Other questions:
  • The following balanced equation shows the decomposition of water (H2O). According to the equation, how many oxygen atoms are in
    9·2 answers
  • A mothball, composed of naphthalene (c10h8), has a mass of 1.64 g . part a how many naphthalene molecules does it contain?
    7·1 answer
  • Which element is malleable and can conduct electricity in the solid phase?
    5·2 answers
  • What is the density of a sample of rubbing alcohol if it has a specific gravity of 0.789?
    14·1 answer
  • Q # 6 which of the following equations has correct formulas and also is a balanced equation?
    15·1 answer
  • How many liters of space are in 4.00x10^22 of O2 occupy at STP
    11·1 answer
  • Convert 4.50 moles of Fe to atoms of Fe
    13·1 answer
  • When ice is melting, the heat being added causes:
    9·2 answers
  • Consider a disubstituted aromatic compound. The parent name is benzene and there is a chloro and bromo substituent. Disubstitute
    6·1 answer
  • Explain why arginine is a basic amino acid
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!