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3 years ago

What kind of reaction is AgNO3+KI —> AgI+KNO3?

Chemistry

1 answer:

Scilla [17]3 years ago

5 0

Answer:

Substitution reaction

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What do chromosomes do

iVinArrow [24]

Answer:

Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.

Explanation:

4 0

3 years ago

Carbon dioxide gas is collected at 27.0(degrees)C in an evacuated flask with a measured volume of 30.0L. When all the gas has be

White raven [17]

Answer:

Moles of carbon dioxide gas is 0.584 moles.

Mass of 0.584 moles of carbon dioxide gas is 25.7 g

Explanation:

Using ideal gas equation

PV = nRT

where,

P = Pressure of gas = $0.480 atm$

V = Volume of gas = 30.0 L

n = number of moles of gas = ?

R = Gas constant = 0.0821 L.atm/mol.K

T = Temperature of gas = 27°C = 300.15 K

Putting values in above equation, we get:

$(0.480 atm)\times 30.0 L=n\times (0.0821L.atm/mol.K)\times 300.15K\\\\n=0.5844 mol\approx 0.584$

Moles of carbon dioxide gas = 0.584 moles

Mass of 0.584 moles of carbon dioxide gas = 0.584 mol × 44 g/mol = 25.69 g ≈ 25.7 g

5 0

3 years ago

Why might it be a bad idea to build a house in a floodplain?

MrRa [10]

Answer:

Because water and floods :)

Explanation:

4 0

3 years ago

Read 2 more answers

If one of the reactants in a reaction is Na2O, what is known about the products? A.There is not enough information to say anythi

NISA [10]

D.The products will have at least 2 Na atoms and 1 O atom.

<h3>Further explanation </h3>

Conservation of mass states that

<em>In a closed system, the masses before and after the reaction are the same </em>

So it can be concluded

mass of the reactants = mass of the products
mass cannot be created or destroyed
The number of atoms involved in a reaction remains the same⇒ number of moles also the same
chemical equation in balanced form

So the number of atoms in reactants and products remains the same

Because one of the reactants in a reaction is Na₂O, so <em>The products will have at least 2 Na atoms and 1 O atom.</em>

6 0

3 years ago

Read 2 more answers

At STP what is the volume of 16.34 grams of nitrogen gas?

nika2105 [10]

Answer:

Volume = 13.06 L

Explanation:

We are given: mass of nitrogren gas = 16.34 g

We know: molar mass of nitrogen gas = 28.014 g/mol

: ideal gas law constant = 0.082 L.atm/K.mol

At STP: temperature = 273.15 K

: pressure = 1 atm

We first determine the number of moles of nitrogen gas:

n = m/M

= 16.34/28.014

= 0.58 mol

Using the ideal gas law:

$\begin{gathered} PV\text{ = nRT} \\ \\ \therefore V\text{ = }\frac{nRT}{P}\text{ = }\frac{0.58\times0.082\times273.15}{1}\text{ = 13.06 L} \end{gathered}$

6 0

1 year ago