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
kkurt [141]
3 years ago
13

When a change in a physical property is observed, Select the correct answer below: it could be because of a physical change. it

must be because of a chemical change. it must be because of a chemical change and a physical change. it could be caused by a change that is considered both physical and chemical.
Chemistry
1 answer:
lord [1]3 years ago
3 0

Answer:

It could be because of a physical change.

Explanation:

A physical change affects a substance's physical properties, and a chemical change affects its chemical properties.

You might be interested in
What is the mass in grams of 0.280 mole sample of sodium hydroxide NaOH​
vivado [14]

Answer:

The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.

Explanation:

To know the mass in grams of 0.280 moles of sample of sodium hydroxide NaOH, you must know the molar mass of the compound, that is, the mass of one mole of a substance, which can be an element or a compound.

So you know:

  • Na: 23 g/mole
  • O: 16 g/mole
  • H: 1 g/mole

So, the molar mass of NaOH is:

NaOH= 23 g/mole + 16 g/mole+ 1 g/mole= 40 g/mole

Then the following rule of three can be applied: if in 1 mole of sodium hydroxide there are 40 grams, in 0.280 moles how much mass is there?

mass=\frac{0.28 moles*40 grams}{1 mole}

mass= 11.2 grams

<u><em>The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.</em></u>

4 0
3 years ago
Potassium chlorate (kclo3) decomposes in a reaction described by this chemical equation:2kclo3(s) → 2kcl(s) + 3o2(g)if 36.0 gram
cricket20 [7]
<span>If 36 gm of potassium chlorate enter into the reaction, the total mass of the two products will still be 36 gm because if there is only one reactant, the mass of the compounds after the reaction will be same that reactant based on the law of conservation of matter.</span>
6 0
3 years ago
1. Calculate the [H] in a solution that has a pH of 9.88.
Olenka [21]
The answer to the question is D.
5 0
3 years ago
Read 2 more answers
Which of the following is not true of a scientific theory?
Furkat [3]

Answer: a,b

Explanation: because a scientific theory is something that been thought of and tested multiple times.

3 0
3 years ago
From a laboratory process designed to separate water into hydrogen and oxygen gas, a student collected 20.0g of Hydrogen and 158
denis23 [38]

Answer:

it is water 2

Explanation:

3 0
1 year ago
Read 2 more answers
Other questions:
  • H2+I2= 2HI+3 kcal Based on the reaction given above, as the temperature decreases, the formation of the reactants will: A. decre
    6·2 answers
  • The person to introduce the idea of an "atom" was _____.
    6·2 answers
  • Kia is doing an experiment in science lab. She is given a beaker containing 100 g of liquid. The beaker has markings on the side
    10·2 answers
  • Q #4 please help if you are sure
    5·1 answer
  • What does the atomic number represent on the periodic table
    11·1 answer
  • A silver cube with an edge length of 2.38 cm and a gold cube with an edge length of 2.79 cm are both heated to 81.9 ∘C and place
    10·1 answer
  • What is used to measure the energy in a chemical reaction?
    8·2 answers
  • For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the solubi
    6·1 answer
  • Someone please Help please When you are measuring your pulse (heart beats per minute) what system are you monitoring?
    5·1 answer
  • What coefficient is needed to balance the reaction
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!