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
horrorfan [7]
2 years ago
6

Determine whether each described process is endothermic or exothermic.

Chemistry
1 answer:
FromTheMoon [43]2 years ago
7 0

Answer:

Ice melts into liquid water- endothermic

A process with a calculated positive q - endothermic

Wood burns in a fireplace - exothermic

A process with a calculated negative q - exothermic

Acid and base are mixed, making test tube feel hot - exothermic

Solid dissolves into solution, making ice pack feel cold - endothermic

Explanation:

An endothermic process is one in which heat is absorbed from the surroundings. The absorption of heat means that heat is removed from the surroundings hence the surroundings feel cool. When heat is absorbed, q is positive.

An exothermic process is one in which heat is released to the surroundings. The evolution of heat means that heat is released into the surroundings hence the surroundings feel hot . When heat is evolved, q is negative.

You might be interested in
When cyclopentane undergo free-radical substitution with bromine (Br2 /Heat) the product:
Artemon [7]

Explanation:

b. Bromo cyclopentane + HBr

4 0
3 years ago
A student has a large number of coins of different diameters, all made by the same metal. She wishes to find the density of the
Elenna [48]

Answer:

A. In a graduated cylinder, put some quantity of water and measure the initial volume. Then put a coin and measure the volume. To find the volume of the coin, simply subtract the initial volume (water only) from the ending volume (water + coin). To measure the mass, take a dry coin and place it on an electronic scale. Density = mass / volume, so divide the mass by the volume to calculate the density of the coin.

B. When measuring the volume, make sure to look at the graduated cylinder at eye level and read from the bottom of the meniscus.

6 0
2 years ago
How many atoms are in ErAg
Semmy [17]
6.022 * 10^23 atoms
3 0
3 years ago
How many atoms are in 175.8 grams of Hg?
dybincka [34]
5.22*22^3 should be the answer
5 0
3 years ago
)
Nat2105 [25]

A good reason for a desert fox to show this pattern of behavior because hunting at night allows the fox to use its night vision.

<h3>What is Hunting?</h3>

Thi9s is commonly practised by predators such as fox in which they capture and kill other animals for food.

The fox has a good night vision which makes it able to hunt for animals during the night also. This is why option C is chosen as the most appropriate choice.

Read more about Hunting here  brainly.com/question/81175

6 0
2 years ago
Other questions:
  • Hot Topics: Animal Welfare - Worksheet
    13·1 answer
  • Creatine phosphate
    6·1 answer
  • 5. Tree sap can be a very concentrated solution of solutes in water. These are mostly sugars, with van’t Hoff factors of 1. The
    12·1 answer
  • 0.398 mol AgNO3 and 2.73 mol NH3 were added to enough water to give 1.00 L of solution at 25 °C. Calculate the equilibrium conce
    5·1 answer
  • HELP ASAP THX!!!!!!!!!!!!
    9·2 answers
  • How many atoms are in the mole of magnesium
    9·1 answer
  • Which pair of elements is most apt to form an ionic compound with each other?
    5·1 answer
  • HCl + CaCO3 CaCl2 + CO2 + H2O balance
    11·1 answer
  • How many milliliters of a 0.1000 M NaOH solution would be needed to neutralize a 1.0000-g sample of potassium hydrogen phthalate
    13·1 answer
  • How many molecules of O₂ will be required to produce 28.8 g of water? 2H₂ + O₂ ---&gt; 2H₂O
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!