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
Kazeer [188]
3 years ago
7

a _______ is a substance that comes out of solution when 2 clear liquids are mixed which is a sign of a _____ change.

Chemistry
1 answer:
Lena [83]3 years ago
3 0

Answer:

precipitate , chemical

Explanation:

a precipitate is is an insoluble solid that forms when two solutions are combined and react chemically. The two clear colorless liquids is a chemical change because a different solid substance is formed

You might be interested in
What is the molarity of a sodium carbonate solution containing 32.52 g Na2CO3 dissolved in enough water to make 822 ml of soluti
svet-max [94.6K]

The molarity of a Sodium carbonate solution : 0.373 M

<h3>Further explanation</h3>

Given

32.52 g Na₂CO₃

822 ml of solution = 0.822 L

Required

The molarity

Solution

Molarity shows the number of moles of solute in every 1 liter of solution.

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

mol of solute = mol of Na₂CO₃ :

= mass : MW Na₂CO₃

= 32.52 g : 106 g/mol

= 0.307

Molarity :

= n : V

= 0.307 mol : 0.822 L

= 0.373 M

8 0
3 years ago
How many atoms of copper are there in 95.5 moles of copper?
aksik [14]

Answer:

Explanatio≡

6.022

×

10

22

 

copper atomsn:

4 0
3 years ago
Calculate the pH during the titration of 30.00 mL of 0.1000 M HCOOH(aq) with 0.1000 M NaOH(aq) after 29.3 mL of the base have be
pashok25 [27]

Answer:

3.336.

Explanation:

<em>Herein, the no. of millimoles of the acid (HCOOH) is more than that of the base (NaOH).</em>

<em />

So, <em>concentration of excess acid = [(NV)acid - (NV)base]/V total</em> = [(30.0 mL)(0.1 M) - (29.3 mL)(0.1 M)]/(59.3 mL) = <em>1.18 x 10⁻³ M.</em>

<em></em>

<em> For weak acids; [H⁺] = √Ka.C</em> = √(1.8 x 10⁻⁴)(1.18 x 10⁻³ M) = <em>4.61 x 10⁻⁴ M.</em>

∵ pH = - log[H⁺].

<em>∴ pH = - log(4.61 x 10⁻⁴) = 3.336.</em>

7 0
4 years ago
How does eating contribute to the flow of energy in a ecosystem
Neporo4naja [7]

Answer:

Eating contributes to the flow of an ecosystem because in a food web/chain, there is always a consumer. Starting from the very bottom of the food web/chain, all organisms eat to pass on the energy to the next cosumer. For example, a grasshopper eats some grass. That grass is made into energy. Then, a possum eats that grasshopper, the energy from the grasshopper converting to the energy of the possum. Then a giant snake comes along and eats the possum. The energy keeps flowing up and up the food chain as animals consume(and be consumed).

4 0
3 years ago
Read 2 more answers
Which change occurs at the anode in an operating electrochemical cell?
murzikaleks [220]

Answer:loss of electrons

Explanation:

6 0
4 years ago
Other questions:
  • Will the second method for determining volume (water displacement) work for ANY object or JUST an irregularly shaped one?
    8·1 answer
  • Pentane, C5H12, will react as shown below:
    6·1 answer
  • List at least 15 important events in the science of Astronomy. Include a description of the event including the year and what cu
    13·2 answers
  • Ionization changes identity of substance?
    9·1 answer
  • For the reaction VCl2 + Cl2 → VCl5, what are the reactants, products, and correct coefficients in the balanced equation?
    5·1 answer
  • Which best represents the reaction of calcium and zinc carbonate (znco3) to form calcium carbonate (caco3) and zinc?
    5·2 answers
  • Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What percentage of a sample remains after
    6·1 answer
  • When something is used only once and then thrown away it is said to be
    10·1 answer
  • Which hold more heat for longer period of time ? <br><br> A. Air <br> B. Water
    12·2 answers
  • Which of these is an example of food engineering?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!