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
juin [17]
3 years ago
10

During an experiment, a student observes the formation of a precipitate. Why does this indicate that a chemical reaction is like

ly occurring
Chemistry
1 answer:
My name is Ann [436]3 years ago
8 0

A. A solid forms, and there is a change of color.

You might be interested in
What is the molarity of a solution that contains 87.75g of NaCI in 500.ml of solution
Brut [27]

Answer:

M = 3.0 mol/L.

Explanation:

  • We can calculate the molarity of a solution using the relation:

<em>M = (mass x 1000) / (molar mass x V)</em>

  • M is the molarity "number of moles of solute per 1.0 L of the solution.
  • mass is the mass of the solute (g) (m = 87.75 g of NaCl).
  • molar mass of NaCl = 58.44 g/mol.
  • V is the volume of the solution (ml) (V = 500.0 ml).

∴ M = (mass x 1000) / (molar mass x V) = (87.75 g x 1000) / (58.44 g/mol x 500.0 ml) = 3.0 mol/L.

6 0
3 years ago
imagine that you're able to fully dissolve a powered substance and water what can be said about this creation
Softa [21]
We can say that the water is the solvent, and the powder is the solute. This is also a solution altogether. 

Explanation:- A solute is the thing being dissolved into the solvent. While the solvent is what when the solute is being dissolved in. Together, they make a solution. 
8 0
3 years ago
The net ionic equation for the reaction between aqueous sulfuric acid and aqueous sodium hydroxide is ________.
Kaylis [27]
Molecular equation:
H_{2}SO_{4}(aq) + 2NaOH(aq)--\ \textgreater \  Na_{2}SO_{4}(aq) + 2H_{2}O(l)&#10;&#10;Complete ionic equation:&#10;&#10;2H^{+}+SO_{4}^{2-} + 2Na^{+} +2OH^{-}--\ \textgreater \  2Na^{+}+SO_{4}^{2-} + 2H_{2}O(l)&#10;&#10;&#10;Near 2H^{+},SO_{4}^{2-} ,  2Na^{+} , OH^{-} &#10;&#10;should be written (aq).&#10;&#10;Remove ions that do not change from both sides&#10;&#10;2H^{+} + 2OH^{-}=2H_{2}O&#10;&#10;Net ionic equation:&#10;&#10;H^{+}(aq) + OH^{-}(aq)=H_{2}O(l)&#10;&#10;Answer is D.&#10;&#10;


8 0
3 years ago
An organism's _______ describes its genetic composition. An organism's _______ describes its appearance or observable characteri
harina [27]
I think it is C species and heredity
5 0
3 years ago
Give the empirical formula for C↓8H↓8
mr_godi [17]

Answer:

Empirical formula of  C₈H₈ =  CH

Explanation:

Data Given:

Molecular Formula = C₈H₈

Empirical Formula = ?

Solution

Empirical Formula:

Empirical formula is the simplest ration of atoms in the molecule but not all numbers of atoms in a compound.

So,

tha ration of the molecular formula should be divided by whole number to get the simplest ratio of molecule

        C₈H₈ Consist of  Carbon (C), and Hydrogen (H)

Now

Look at the ratio of these two atoms in the compound

                         C : H

                         8 : 8

Divide the ratio by two to get simplest ratio

                          C : H

                       8/8 : 8/8

                         1   :  1

So for the empirical formula is the simplest ratio of carbon to hydrogen 1 : 1

So the empirical formula will be

                     Empirical formula of  C₈H₈ =  CH

4 0
3 years ago
Other questions:
  • At atmospheric pressure a balloon contains 2.00 l of nitrogen gas how would the volume change \
    7·1 answer
  • A sample of ethane (C2H6)was combusted completely and the water that formed has a mass of 1.61 grams.How much ethane, in grams,
    10·1 answer
  • When 167.2 joules of heat is added to 4.00 grams of water at 10c the resulting temperature is what
    12·1 answer
  • Can someone please answer these
    12·1 answer
  • 2H2 + O2 -&gt; 2H20<br> How many grams of oxygen are needed to produce 25 grams of H20
    6·1 answer
  • 16.
    5·1 answer
  • Chase had determined the boiling point of an unknown liquid to be 45.2 ⁰C when the correct boiling point is 44.32 ⁰C. What is th
    14·1 answer
  • Flammable liquids are those that have a flashpoint of:.
    11·1 answer
  • A scientist fills a large, tightly sealed balloon with 75,000 mL of helium at STP.
    15·1 answer
  • Lynne is riding her bike at a speed of 22.55<br> km/hr. What is this speed in mi/min?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!