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
photoshop1234 [79]
3 years ago
11

Determine if the equation is endothermic or exothermic examples

Chemistry
1 answer:
Fittoniya [83]3 years ago
6 0
There are a couple of ways todetermine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat is released during the reaction between the two reactants.


In endothermic reactions you can find a triangle above the arrow.
You might be interested in
When hydrated copper(II) sulfate crystals are heated, anhydrous copper(II) sulfate forms. A mass of 12.5 g of hydrated copper(II
pychu [463]

The formula of hydrated copper(II) sulfate is CuSO4.10H2O

<h3>What is the formula of the hydrated copper (ii) sulfate salt?</h3>

The formula of the hydrated copper (ii) sulfate is determined as follows:

Mass of hydrated salt = 12.5 g

Mass of anhydrous salt = 8.0 g

Mass of water = 12.5 - 8 = 4.5 g

mole ratio of water and anhydrous salt is;

4.5/18 : 8.0/159.5

0.562 : 0.05

10 : 1

Water of crystallization (n) = 10.

Therefore, the formula of hydrated copper(II) sulfate is CuSO4.10H2O

Learn more about water of crystallization at: brainly.com/question/26146814

#SPJ1

7 0
2 years ago
Which is true about covalent compounds?
Anton [14]
Covalent compounds have a low boiling point. All the other answers apply to ionic compounds.
3 0
3 years ago
Read 2 more answers
How many ml are in 1.25 l of a intravenous solution of 0.9% sodium chloride?
sweet-ann [11.9K]

Mass % of NaCl = 0.9 % (m/v)

Density of 0.9 % NaCl is about 1.0 g/mL

Volume of NaCl in mL :

1.25 L solution * \frac{1000 mL}{1 L} * \frac{0.9 g NaCl}{100 mL solution}*\frac{1 mL}{1.0 g NaCl}

= 11.25 mL NaCl

8 0
3 years ago
How many moles of C are in a diamond that has a mass of 0.80 g? (Atomic mass of C=12.01g)
Alik [6]

Answer:

0.066 moles

Explanation:

0.80/12.01=0.0666

6 0
3 years ago
Read the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you t
muminat

Answer:

Sample A is  a pure substance

Sample B is a mixture

Explanation:

We are told that the when the yellow solid, sample A is ground it turned to orange colour  and was then dissolved. Some part of the solid settled out at the bottom of the beaker while some part floated on top of the water. 50g of the solid was dissolved and 50.1g of the solid was recovered.

This implies that the substance is pure since the mass dissolved was almost the same mass recovered. The 0.1g addition in mass may result from incomplete drying of the solid.

For sample B, the distillation of the sample of density 0.77 g/ml left a fraction in the beaker with density 1.04 g/ml indicating that the substance is a mixture. Different components of a mixture possess different densities.

5 0
2 years ago
Other questions:
  • A glass of water contains 1.2 x 1024 molecules of water. An additional 4.0 moles of water are poured into the glass. How many mo
    15·1 answer
  • Which p[robing question lies within the scope of physic?
    5·1 answer
  • What is the main type of weathering in deserts? weathering by organic acids chemical weathering physical weathering
    7·1 answer
  • 118.5 g piece of lead is heated with 4,700 J of energy. If the specific heat of lead is 0.129 J/ (g ⋅ °C), and the lead’s initia
    12·1 answer
  • Do you think a single gene controls height in humans, as it does in peas? Explain your answer.
    7·2 answers
  • Is carbon dioxide a reactant
    6·1 answer
  • What is the pH of a solution made by mixing equal volumes of 1 M sodium acetate and 1 M acetic acid? (The pK of acetic acid is 4
    13·1 answer
  • Calculate the mass of 2.00 X 1020 molecules of SO3.
    15·1 answer
  • List any two examples of man-made<br>de astery​
    5·1 answer
  • As methane burns, it reacts with oxygen and forms carbon dioxide and water. The balanced chemical equation below models this che
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!