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erastova [34]
3 years ago
11

Predict what precipitate will be formed using the solubility rules. then write the net ionic equation for the formation of the s

olid. balance the net equation.
CaCl2(aq) + K3PO4(aq)

—————————
i’ve already got a majority of the net ionic equation, CaPO4(aq) + Cl2K3(aq) = ?
but i don’t know what the solid will end up being
Chemistry
1 answer:
babymother [125]3 years ago
7 0

<u>Answer: </u>The net ionic equation for the following precipitation reaction will be 3Ca^{2+}(aq.)+2PO_4^{3-}(aq.)\rightarrow Ca_3(PO_4)_2(s)

<u>Explanation:</u>

Precipitation reaction is defined as the reaction in which two soluble salts combine in aqueous state to form one insoluble product known as a precipitate.

For the reaction of calcium chloride and potassium phosphate, the reaction follows:

3CaCl_2(aq.)+2K_3PO_4(aq.)\rightarrow Ca_3(PO_4)_2(s)+6KCl(aq.)

The ionic equation for the above reaction follows:

3Ca^{2+}(aq.)+6Cl^-(aq.)+6K^+(aq.)+2PO_4^{3-}(aq.)\rightarrow Ca_3PO_4(s)+6K^+(aq.)+6Cl^-(aq.)

To write the net ionic equation, spectator ions are not written because these ions lie on both the sides of the reaction and does not affect equilibrium. These ions are ignored in writing the net ionic equation.

Hence, the net ionic equation becomes:

3Ca^{2+}(aq.)+2PO_4^{3-}(aq.)\rightarrow Ca_3(PO_4)_2(s)

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How many grams of magnesium acetate are in 8.95x10^23 formula units?
Natasha_Volkova [10]

Answer:

211.63 g.

Explanation:

  • Particles could refer to atoms, molecules, formula units.
  • <em>Knowing that every one mole of a substance contains Avogadro's no. of molecules (NA = 6.022 x 10²³).</em>

<em><u>Using cross multiplication:  </u></em>

1.0 mole → 6.022 x 10²³ molecules.

??? mole → 8.95 x 10²³ molecules.

  • The no. of moles of magnesium acetate = (8.95 x 10²³ molecules) (1.0 mole) / (6.022 x 10²³ molecules) = 1.486 mol.

∴ The grams of magnesium acetate are in 8.95 x 10²³ formula units = n x molar mass = (1.486 mol)(142.394 g/mol) = 211.63 g.

5 0
3 years ago
How many hours are in 7 months? (assume 30 days in a month)
Komok [63]

Answer:

there is about 5110.01 hours in 7 months

Explanation:

because no 7 months in a row have the same amount of months so about 730.001428571 days in 7 months times the number of months. Hope this helps!

3 0
3 years ago
Read 2 more answers
A balloon that had a volume of 3.50 L at 25.0°C is placed in a hot room at 40.0°C. If the pressure remains constant at 1.00 atm,
inna [77]

Answer:

3.676 L.

Explanation:

  • We can use the general law of ideal gas: PV = nRT.

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R  is the general gas constant,

T is the temperature of the gas in K.

  • If n and P are constant, and have different values of V and T:

(V₁T₂) = (V₂T₁)

  • Knowing that:

V₁ = 3.5 L, T₁ = 25°C + 273 = 298 K,

V₂ = ??? L, T₂ = 40°C + 273 = 313 K,

  • Applying in the above equation

(V₁T₂) = (V₂T₁)

∴ V₂ = (V₁T₂)/(T₁) = (3.5 L)(313 K)/(298 K) = 3.676 L.

7 0
3 years ago
Read 2 more answers
Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He.
Cerrena [4.2K]

Answer:

Answer :

The total pressure inside the cylinder is, 6.7 atm

The mole fraction of N_2 in the mixture is, 0.52

Solution :

First we have to calculate the total pressure inside the cylinder.

According to the Dalton's law, the total pressure of the gas is equal to the sum of the partial pressure of the mixture of gasses.

P_T=p_{N_2}+p_{O_2}+p_{Ar}+p_{He}

Now put all the given values is expression, we get the total pressure inside the cylinder.

P_T=3.5+2.8+0.25+0.15=6.7atm

Now we have to calculate the mole fraction of N_2 in the mixture.

Formula used :

pN_2=XN_2 x P_T

where,

P_T = total pressure = 6.7 atm

pN_2 = partial pressure of nitrogen gas = 3.5 atm

XN_2 = mole fraction of nitrogen gas = ?

Now put all the given values in the above formula, we get

3.5atm=XN_2 x 6.7atm

XN_2=0.52

Therefore, the total pressure inside the cylinder is, 6.7 atm and the mole fraction of N_2 in the mixture is, 0.52

Hope it helps answer the question:)

5 0
3 years ago
Classify each of these compounds as a Brønsted-Lowry acid, a Brønsted-Lowry base, or neither.
chubhunter [2.5K]

Answer:

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Brønsted-Lowry Base : NH3, C3H7NH2, CH3)3N

Neither : NaBr, CCl4

Explanation:

8 0
3 years ago
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