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
Fiesta28 [93]
3 years ago
11

During a qualitative analysis experiment a student found his unknown salt to contain mn2 and po43- ions. write the chemical form

ula for their unknown salt. do not include phases with your answer.

Chemistry
1 answer:
MrMuchimi3 years ago
3 0

The ions in the unknown salt are:

Mn^{2+} and PO_{4}^{3-}

The chemical formula of the salt is determined as shown in the picture.

The chemical formula of the salt is Mn_3(PO_{4})_{2}.


You might be interested in
If you filter a mixture of sand and salt-water, what will the solid residue in the filter paper consist of?
julia-pushkina [17]
Sand only bc the salt dissolved and sand doesn't
8 0
3 years ago
25 points!!! please Which types of elements areconsidered neutraland Where are these types of elements found on the periodic tab
posledela

Elements which composed of an equal amount of three components protons, neutrons and electrons are considered neutral elements. example of neutral elements are hydrogen, helium, lithium and beryllium...

7 0
3 years ago
Which element has their valence electron farthest from the nucleus?
Iteru [2.4K]
The answer is Rubidium (Rb)
4 0
3 years ago
An engine operates on a Carnot cycle that uses 1mole of an ideal gas as the
sattari [20]

Answer:

Step 1;

q = w = -0.52571 kJ, ΔS = 0.876 J/K

Step 2

q = 0, w = ΔU = -7.5 kJ, ΔH = -5.00574 kJ

Explanation:

The given parameters are;

P_i = 100 N·m

T_i = 327 K

P_f = 90 N·m

Step 1

For isothermal expansion, we have;

ΔU = ΔH = 0

w = n·R·T·ln(P_f/P_i) = 1 × 8.314 × 600.15 × ln(90/100) = -525.71

w ≈<em> -0.52571</em> kJ

At state 1, q = w = -0.52571 kJ

ΔS = -n·R·ln(P_f/P_i) = -1 × 8.314 × ln(90/100) ≈ 0.876

ΔS ≈ 0.876 J/K

Step 2

q = 0 for adiabatic process

ΔU = 25×(27 - 327) = -7,500

w = ΔU = <em>-7.5 kJ</em>

ΔH = ΔU + n·R·ΔT

ΔH = -7,500 + 8.3142 × 300 = -5,005.74

ΔH = ΔU = <em>-5.00574 kJ</em>

6 0
2 years ago
3. How many moles of carbon dioxide gas, CO2, are there in 2.8 L of this gas<br> at STP?
kenny6666 [7]

Answer:

The answer is: 0,13 moles of CO2

Explanation:

We use the formula PV=nRT. The conditions STP are 1 atm of pressure and 273K of temperature:

PV=nRT n=PV/RT

n=1 atm x 2,8 L/ 0,082 l atm/K mol x 273K

n= 0,125078173 mol

5 0
3 years ago
Other questions:
  • What does pure substance mean in chemistry?
    9·1 answer
  • Which scientist was the first to use the telescope in astronomy? Copernicus Newton Kepler Galileo
    6·1 answer
  • As the particles of a solid undergo sublimation , they?
    12·1 answer
  • Neon belongs to what family
    12·1 answer
  • 1. When the temperature of a rigid hollow sphere containing 685 L of helium gas is
    6·1 answer
  • What is the ph of a solution that has 0.075 m ch3cooh and 0.050m nach3coo present? ka for acetic acid = 1.80 x 10-5?
    14·1 answer
  • Which organelle is found in photosynthetic organisms and captures energy from the sun?
    8·2 answers
  • Quais são os nomes dos planetas anões
    6·1 answer
  • Calculate the precise Molar Mass of NH3 and calculate the moles in 50.0<br> grams.
    13·1 answer
  • Help me out please? Thank you!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!