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
polet [3.4K]
3 years ago
8

This substance can be either homogeneous or heterogeneous.

Chemistry
1 answer:
Alekssandra [29.7K]3 years ago
8 0

Answer:

I think it's Element and compound

Explanation:

You might be interested in
A reaction was suppose to produce 20 L of gas. Only 12 litters of gas were produced in the lab. What is the percent yield for th
pogonyaev

Answer:

\boxed {\boxed {\sf 60 \%}}

Explanation:

Percent yield is a ratio of the actual yield to the theoretical yield. It is found using this formula:

\% \ yield= \frac {actual \ yield}{theoretical \  yield} *100

The actual yield is 12 liters, because that was actually produced in the lab.

The theoretical yield is 20 liters, because that was the expected yield.

\% \ yield= \frac {12 \ L}{20\ L} *100

\% \ yield= 0.6*100

\% \ yield= 60

For this reaction, the percent yield is 60%.

5 0
3 years ago
Draw lewis formula and structural formula of hydrogen ion please and thank you
tresset_1 [31]

The Lewis formula refers to a diagram showing the distribution of electrones and in case of a molecule it also shows the bonds.

The structural formula on the other hand is a representation of the molecular structure that shows all the atoms that form the molecule, arranged in a three dimentional space,

In this case we have the hydrogen ion, which is the simpliest case we can have.

Hydrogen ion is the hydrogen atom possitively charged as it has lost his electron. Therefore the structural formula is simply the following:

The Lewis formula is also very simple as this ion has no electrons and has no bonding to other atoms:

4 0
1 year ago
What is the answer please tell me
Nastasia [14]

Answer:

you need to include the bottom portion, not enough info

Explanation:

5 0
3 years ago
What is the significance of the Roman Numeral when naming binary ionic compounds?
serious [3.7K]

Answer:

Roman numbers are oxidation state of the metals

Because some elements of metals show more than one oxidation state like iron Fe2+ in ferrous and Fe3+ in ferric.

Explanation:

8 0
3 years ago
Which equation represents single replacement reaction? A) CH4 + 2 02 → CO2 + 2 H2O B) CaCO3 + CaO + CO2 C) 2 Na + 2 H2O → 2 NaOH
loris [4]

Answer:

C) 2 Na + 2 H2O → 2 NaOH + H2.

Explanation:

Hello there!

In this case, according to the given chemical reactions, it is possible to firstly understand that a single displacement reaction is characterized by the presence of a single element as the first reactant and a compound as the second one, thus, yielding a compound as the first product and a single element as the second one.

In such a way, according to the given choices, it possible to note that C) 2 Na + 2 H2O → 2 NaOH + H2 is the only one with the aforementioned condition as the element at the reactants side is Na and at the products side is H2.

Best regards!

6 0
3 years ago
Other questions:
  • If the total mass of the products of a reaction is 90 gram, what was the total mass of the reactants
    13·1 answer
  • What is number 2? the brain stem......
    13·1 answer
  • A laboratory experiment reauires 2.0L
    14·1 answer
  • 300 °C would be found in which temperature range?
    13·1 answer
  • What are the properties of synthetic fuels
    15·1 answer
  • Do regular Ritz crackers have lipids, glucose, protein, or starch?
    6·2 answers
  • According to the graph, which statement is correct?
    9·2 answers
  • Does the Caribbean have high or low viscosity lava?
    6·1 answer
  • Helium only has two valence electrons and is a stable atom. How is this possible when atoms
    12·1 answer
  • A student spends 4.5 hours studying for a test. How much time is this equivalent to in seconds
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!