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
Tamiku [17]
3 years ago
5

What is the molarity of a solution made by dissolving 14.8 g of ammonium hydroxide NH4OH, in enough water to make 250.0 mL of so

lution
Chemistry
1 answer:
kicyunya [14]3 years ago
6 0

Answer:

Molarity= 1.69M

Explanation:

m= 14.8, Mm= 35, V= 0.25dm3, C= ?

Moles = m/M= C×V

Substitute and Simplify

m/M= C×V

14.8/35= C×0.25

C= 1.69M

You might be interested in
How many molecules of N2 are in a 400.0 mL container at 780 mm Hg and 135°C? Avogadro’s number = 6.022 x 1023A) 7.01 × 1021 mole
ASHA 777 [7]

Answer:

B

Explanation:

Firstly, we will need to calculate the number of moles. To do this, we make use of the ideal gas equation

PV = nRT

n = PV/RT

The parameters have the following values according to the question:

P = 780mmHg, we convert this to pascal.

760mHG = 101325pa

780mmHg = xpa

x = (780 * 101325)/760 = 103,991 Pa

V= 400ml = 0.4L

T = 135C = 135 + 273.15 = 408.15K

n = ?

R = 8314.463LPa/K.mol

Substituting these values into the equation yields the following:

n = (103991 * 0.4)/(8314.463 * 408.15)

= 0.012 moles

Now we know 1 mole contains 6.02 * 10^23 molecules, hence, 0.012moles will contain = 0.012 * 6.02 * 10^23 = 7.38 * 10^21 molecules

8 0
3 years ago
Read 2 more answers
Humans are always consumers. Most humans are omnivores, but some
Fofino [41]

Answer:

A. Autotrophs

Explanation:

an autotroph, def an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

humans and other mammals, plants, and a select few other things

4 0
3 years ago
Explain how you would separate a mixture of sand and water.
Nata [24]

Answer: When sand is added to water it either hangs in the water or forms a layer at the bottom of the container. Sand therefore does not dissolve in water and is insoluble. It is easy to separate sand and water by filtering the mixture. Salt can be separated from a solution through evaporation.

Explanation:

4 0
3 years ago
What role does the wire play in voltaic cell?
Triss [41]
<h3><u>Answer;</u></h3>

a) It allows electrons to flow from the anode to the cathode.

<h3><u>Explanation</u>;</h3>
  • <em><u>Voltaic cell is an electrochemical cell in which a spontaneous chemical reaction produces the flow of electrons</u></em>.
  • Electrons are produced by the oxidation reaction occurring at the anode. Electrons flow through the conducting wire from the anode to the cathode. At the cathode these electrons are used to reduce copper(II) ions to copper atoms.
  • <em><u>A conducting wire or a wire play connects the two electrodes allowing electrons to flow from the anode to the cathode</u></em>.
7 0
3 years ago
Select three parts of a simple electrolytic cell and explain their functions in the space below.
kotegsom [21]
A cathode is the location in an electrolytic cell where reduction reactions take place.

An anode is the location in an electrolytic cell where oxidation reactions occur.

An electrolyte solution is any substance containing free ions that make the substance electrically conductive.

<span>An external electrical energy source like a  battery or a transformer is used to drive the non-spontaneous reaction.</span>
8 0
3 years ago
Other questions:
  • How is n1 in the Rydberg equation related to the quantum number n in the Bohr model of the atom?
    13·1 answer
  • Atmos of given elements will have the same mass true or false .
    15·2 answers
  • SUBSTANCE
    15·1 answer
  • The mass of a single molybdenum atom is 1.59×10-22 grams. How many molybdenum atoms would there be in 40.6 milligrams of molybde
    11·1 answer
  • Suppose Set A contains 52 elements and Set B contains 46 elements. If Sets A and B have 29 elements in common, what is the total
    14·1 answer
  • How should this combustion reaction be balanced?<br> C5H8+O2 + CO2 + H20
    10·2 answers
  • Put these atoms in order from most negative overall charge to least negative
    10·1 answer
  • When a system is at equilibrium, ________. When a system is at equilibrium, ________. the reverse process is spontaneous but the
    7·1 answer
  • If you have two pistons in a system, which exerts the larger force?
    5·1 answer
  • A benefit of using nuclear energy could be the abundance of uranium in nature. which human risk about mining is the most importa
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!