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3 years ago

Which equations represent precipitation reactions? More than one can be chosen.

Chemistry

2 answers:

Ymorist [56]3 years ago

6 0

Answer is:

A. Na₂S + FeBr₂ → 2NaBr + FeS.

B. MgSO₄ + CaCl₂ → MgCl₂ + CaSO₄.

E. AgNO₃ + NaCl → AgCl + NaNO₃.

Iron sulfide (FeS) has low solubility in water.

Calcium sulfate (CaSO₄) has low solubility in water and it will form white precipitate.

Silver chloride (AgCl) has low solubility in water and it will form white precipitate.

Novay_Z [31]3 years ago

5 0

A. Na₂S + FeBr₂ → 2NaBr + FeS.

B. MgSO₄ + CaCl₂ → MgCl₂ + CaSO₄.

E. AgNO₃ + NaCl → AgCl + NaNO₃.

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I need someone to answer these.

SCORPION-xisa [38]

Answer:

The identity of an atom is determined my the number of protons. This is the atomic number.

The particle(s) found inside the nucleus are called protons and neutrons. Their combined mass is referred to as the mass number.

Isotopes have the same number of protons, but different number of neutrons.

7 0

3 years ago

Ch4+202==>c02+302 what type of chemical reaction

n200080 [17]

Answer:

First of all, the equation is typed wrong so it can easily be misinterpreted

Ethane (CH4) + Oxygen gas (O2) would give us Carbon Dioxide (CO2) and WATER (H2O)

CH4 + 2O2 -----> CO2 + 2H2O

And this is a combustion reaction since we have oxygen as a reactant and carbon dioxide and water as products.

4 0

3 years ago

A sample of gas with an initial volume of 12.5 L at a pressure of 784 torr and a temperature of 295 K is compressed to a volume

Kipish [7]

Answer:

Final pressure in (atm) (P1) = 6.642 atm

Explanation:

Given:

Initial volume of gas (V) = 12.5 L

Pressure (P) = 784 torr

Temperature (T) = 295 K

Final volume (V1) = 2.04 L

Final temperature (T1) = 310 K

Find:

Final pressure in (atm) (P1) = ?

Computation:

According to combine gas law method:

$\frac{PV}{T} =\frac{P1V1}{T1} \\\\\frac{(784)(12.5)}{295} =\frac{(P1)(2.04)}{310}\\\\33.22 = \frac{(P1)(2.04)}{310}\\\\P1=5,048.18877$

⇒ Final pressure (P1) = 5,048.18877 torr

⇒ Final pressure in (atm) (P1) = 5,048.18877 torr / 760

⇒ Final pressure in (atm) (P1) = 6.642 atm

3 0

4 years ago

Is a landslide an example of erosion or weathering

Shtirlitz [24]

Answer:

It is a example of erosion

Explanation: because pieces of rock erode making it unstable a causes a landslide

7 0

3 years ago

What is the frequency of electromagnetic radiation having a wavelength of 3.27 ✕ 10-8 m? s-1 What type of electromagnetic radiat

iogann1982 [59]

Hello There!

The frequency is 91.74 MHz.
It is UltraViolet Radiation.

Hope This Helps You!
Good Luck :)

4 0

4 years ago