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
prohojiy [21]
2 years ago
10

State the types of change that take place in each of the following

Chemistry
1 answer:
atroni [7]2 years ago
4 0

Answer:

Chemical changes

Explanation:

a)Burning a piece of charcoal - chemical change

b) Heating copper (ii) carbonate strongly - chemical change

c) Heating Zinc oxide strongly - chemical change

The given types of reaction indicates chemical changes. A chemical change is one in which a new kind of matter is formed. It is always accompanied by energy changes. The process is not easily reversible and hence, it is a permanent procedure.

 Burning of charcoal produces a new kind of produces in the combustion process.

Both heating of copper(ii)carbonate strongly and zinc oxide will lead to a decomposition reaction in which new compounds are formed.

You might be interested in
Which is the correctly balanced chemical equation for the reaction of KOH and H2SO4?<br> A,B,C,or D?
ad-work [718]

Answer:

B

Explanation:

5 0
2 years ago
Joseph Proust showed that when elements combine to form new substances, they do so in specific mass ratios.a) trueb) false
olga55 [171]

Answer: option A) True

Explanation:

Joseph Proust is the founder of the Law of Definite proportion. This law states that two elements will always combine together to form a chemical compound and this will be in the same proportion by mass.

For Example: 2 moles of Hydrogen (H2) ALWAYS combine with 1 atom of Oxygen (O) to yield water (H2O)

So, the answer is True

3 0
2 years ago
The table below shows the density of a sample of a mystery liquid you tested in the lab. Can you infer the identity of the subst
Mashutka [201]

Answer:

A. Yes, the substance must be water.

Explanation:

The density of a substance is unique to it. Density is defined the as the amount of substance contained per volume.

One of the ways of identifying a substance is to determine its density. Every matter is known to have their own specific densities. This makes them different from other substances. The density of gold is unique to it and it differs from that of silver.

In fact, water has density of 1.00gcm⁻³. Experimental errors and some little factors must have altered our expected figure. This a case of precision and accuracy in the experiment.

7 0
2 years ago
#1: Karen measures the volume of a gas at 200 K and 100 kPa. To correct her measurement to standard temperature and pressure (ST
Nitella [24]
To correct her measurement to standard temperature and pressure (STP), she must <span>make a volume correction based on a higher temperature of 273 K. The answer is letter B. This is in order to correct the temperature and pressure because correcting the volume will indicate that the temperature and pressure will result to the opposite result of the volume. This is because volume is indirectly proportional with pressure and temperature.</span>
3 0
3 years ago
According to the data, how much energy would be liberated burning 0.554 kg of olive oil?
nirvana33 [79]

Answer:

2.18×10⁴ kJ are liberated when you burn 0.554 kg of olive oil

Explanation:

The chart indicates that ΔH combustion for the olive oil is 39.31 kJ/g which means that, when you burn 1 g of olive oil, you have 39.31 kJ of heat.

In this case, the mass of olive is 0.554 kg. Let's convert the mass from kg to g → 0.554 kg .  1000 g / 1kg = 554 g

Now, the conversion factor:

554 g . 39.31 kJ / 1g = 2.18×10⁴ kJ

6 0
2 years ago
Other questions:
  • Plant cells have large, round vacuoles they primarily use for -
    10·1 answer
  • Earth is unique because it _____. has only one satellite has the largest satellite in the solar system is located outside the as
    6·2 answers
  • ***30 POINTS!!!!
    7·1 answer
  • Which type of bond is present in hydrogen sulfide (H2S)? The table of electronegativities is given
    6·2 answers
  • To vaporize/condense a substance, does the substance have to absorb or release heat?
    12·1 answer
  • What is accretion?????
    9·2 answers
  • How many moles in 200 grams of Br
    11·1 answer
  • Oxidation is now defined in terms of change of oxidation number. Explore how earlier definitions of oxidation and reduction may
    5·1 answer
  • Which of the following prefixes would show up in the name for SF6? Hexa, penta, tetra, hepta, and mono
    10·1 answer
  • State at least three different properties of metallic compounds?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!