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3 years ago

What type of reaction is Pb(NO3)2 (aq) + 2KI (aq) →PbI2 + 2KNO3 (aq)

Chemistry

1 answer:

kifflom [539]3 years ago

4 0

Answer:

Precipitation Reactions

They contain two aqueous reactants, one aqueous product, and one solid product. In this reaction, two soluble products, Pb(NO3)2 and KI, combine to form one soluble product, KNO3, and one insoluble product, PbI2. This is a precipitation reaction, and PbI2 is the precipitate.

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Select the conversion factors needed to convert the cost of gas from dollars per gallon to the cost in euros per liter.

Katen [24]

The correct conversion factor would be 0.24 euro per liter

<h3>Unit conversion</h3>

1 dollar = 0.89 euro

Also,

1 gallon = 3.785 liters

Thus, 1 dollar/gallon = 0.89 euro/3.785 liters

If 0.89 euro is for 3.785 liters, 1 liter would be:

1 x 0.89/3.785/= 0.24 euro

Thus, the cost of gas from 1 dollar per gallon would be 0.24 euro per liter

More on conversion from one unit to another can be found here: brainly.com/question/14601718?referrer=searchResults

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3 years ago

Hydrogen peroxide spontaneously decomposes to yeild water and oxygen. Balance this reaction.

gladu [14]

C: 4 H on the left and right, 4 O on both sides making it balanced

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4 years ago

Read 2 more answers

Calculate the concentration of hydrochloric acid if 50.0 mL of hydrochloric acid is neutralized by 25.0 mL of 2.0 M sodium hydro

Arisa [49]

Answer:

1.0M HCl is the concentration of the acid

Explanation:

Based on the reaction, 1 mole of NaOH reacts per mole of HCl. That means the moles added of NaOH in the neutralization = Moles of HCl in the solution. With the moles and the volume in Liters we can find the molar concentration of HCl

<em>Moles NaOH = Moles HCl:</em>

25.0mL = 0.025L * (2.0moles / L) = 0.050moles HCl

<em>Molarity:</em>

0.050moles HCl / 0.0500L =

<h3>1.0M HCl is the concentration of the acid</h3>

6 0

3 years ago

Calculate the volume in litres (L) of 1.41 mol of gas at 68.0 kPa and 27.00 °C (gas constant R = 8.314 J mol K-.).

Pani-rosa [81]

Answer:

3.) 51.7 L

Explanation:

To find the volume, you need to use the Ideal Gas Law:

PV = nRT

In the equation,

-----> P = pressure (kPa)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas constant (8.314 kPa*L/mol*K)

-----> T = temperature (K)

First, you need to convert the temperature from Celsius to Kelvin. Then, you can plug the given values into the equation and simplify to find "V".

P = 68.0 kPa R = 8.314 kPa*L/mol*K

V = ? L T = 27.00 °C + 273 = 300 K

n = 1.41 moles

PV = nRT <----- Ideal Gas Law

(68.0 kPa)V = (1.41 moles)(8.314 kPa*L/mol*K)(300 K) <----- Insert values

(68.0 kPa)V = 3516.822 <----- Multiply right side

V = 51.7 <----- Divide both sides by 68.0

3 0

1 year ago

A 1.85 kg textbook is sitting on a bookshelf 2.23 m above the floor. How much potential energy does it have?

neonofarm [45]

Answer:

$\boxed {\boxed {\sf 40.4299 \ Joules}}$

Explanation:

Potential energy is energy due to position. It is the product of mass, height, and acceleration due to gravity.

$PE= m \times g \times h$

The mass of the textbook is 1.85 kilograms. Assuming this is on Earth, the acceleration due to gravity is 9.8 meters per square second. The height is 2.23 meters.