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natka813 [3]
3 years ago
8

Calculate the percent ionization of a 0.447 M solution of nitrous acid

Chemistry
1 answer:
Rudiy273 years ago
4 0

I hope this will help :)

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Near which letter on the map would you expect to find a lake? explain why
BlackZzzverrR [31]
*Warning* This is an educated guess

I would go with point B because it is at the lowest point on the map. Water always travels down, meaning, if no obstructions, it would travel to the ground closest to the Earth's center.

Hope this helps!
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What compoponents of the atom are found outside of nucleus
liberstina [14]

Electrons are the smallest of the three particles that make up atoms. Electrons are found in shells or orbitals that surround the nucleus of an atom. Protons and neutrons are found in the nucleus. They group together in the center of the atom.

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2. A sample of table sugar (sucrose, C12H22O11) has a mass of 1.202 g.
Snezhnost [94]

Explanation:

Given mass of sugar = 1.202 g

Molar mass of the sugar , C_{12}H_{22}O_{11} = 342.29 g/mol

a) Number of moles of sugar

\text{number of moles}=\frac{\text{given mass of sugar}}{\text{molar mass of sugar}}=\frac{1.202 g}{342.29g/mol}=0.0035 mol

Number of moles of sugar in 1.202 grams is 0.0035 moles

b)Moles of each element in C_{12}H_{22}O_{11}

In a molecular formula of sugar there are 12 carbon, 22 hydrogen and 11 oxygen atoms

Moles of an element in molecule =

number of atoms of that element in a molecular formula × number of moles of compound

Moles of carbon = 12 × 0.0035 = 0.042 moles

Similarly

Moles of hydrogen = 22  × 0.0035 = 0.077 moles

Moles of oxygen =11 × 0.0035 = 0.0385 moles

c) Number of atoms of each type in C_{12}H_{22}O_{11}

\text{Number of atoms}=\text{number of moles of that atom in a molecular formula}\times \text{Avogadro number}

Number of carbon atoms =0.042 mole\times 6.022 \times 10^{23}=2.52\times 10^{22} atoms

Number of hydrogen =0.077mole\times 6.022 \times 10^{23}=4.63\times 10^{22} atoms

Number of oxygen atoms = 0.0385 mole\times 6.022 \times 10^{23}=2.31\times 10^{22} atoms

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3 years ago
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What happens to the speed and acceleration when you let go
kvasek [131]
Imagine you are playing golf, and you’ve just set up the golf ball on the tee. You test your grip, take a few practice swings, and peer into the distance at the flag pole marking the first hole for the course. Your wise golf ball guru (who happens to also teach physics) tells you to “Be the ball, young grasshopper.” So you close your eyes and picture the distance the ball must travel. “Yes, young earthworm”, your sensei says, “that distance you see is the displacement you must achieve, displacement is the change in position from one place to another.”
You meditate on this nugget of wisdom, and you start to feel like you and the golf ball are one. But the hole still seems so far away: “How do I change the position of the ball, sensei?
Your sensei replies: “Ahh, the ball cannot simply teleport instantly, it requires velocity; you must change the position of the ball over time.”
In a brilliant burst of enlightenment, you know what you must do. The golf ball sits there minding its own business; with a velocity of 0, and it doesn’t have any plans on moving anytime soon until… WHACK! You hit that golf ball with your club and the ball goes flying through the air. Suddenly the ball is moving, and fast! You know you’ve made your sensei proud, the ball is being displaced, sailing from one position to another toward the hole, This change in position as time passes is what we call velocity.
3 0
4 years ago
Can ya help me out real quick?
Taya2010 [7]

Answer:

302 kj heat is released by lowering the temperature

8 0
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