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xxMikexx [17]
3 years ago
5

Which letter marks the location where carbon dioxide is produced during respiration

Chemistry
1 answer:
drek231 [11]3 years ago
6 0

Answer:

The answer is 'X'

Explanation:

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What is the density of 2 mol of (He) at STP? (Show work and explain, please!!!)​
Svetradugi [14.3K]

Answer:

d = 1.8 × 10⁻⁴ kg/L

Explanation:

Given data:

Moles of helium = 2 mol

Temperature and pressure = standard

Density = ?

Solution:

PV = nRT

V = nRT/ P

V = 2 mol × 0.0821 atm. L/ mol. K × 273 K / 1 atm

V = 44.8 L

Mass of helium:

Mass = number of moles  × molar mass

Mass = 2 mol × 4 g/mol

Mass = 8 g

Mass = 0.008 kg

Density;

Density = mass/ volume

d = 0.008 kg/ 44.8 L

d = 1.8 × 10⁻⁴ kg/L

7 0
4 years ago
a neutral atom possesses an atomic number of 13 and an atomic mass of 27. Three electrons ar lost What region are they lost from
motikmotik
Al (1s²2s²2p⁶3s²3p¹) - 3e⁻  → Al³⁺ (1s²2s²2p⁶)

3s²3p¹

7 0
4 years ago
If one atom of oxygen is neutral and another atom of oxygen is an ion do they have to differ in mass?
Gala2k [10]
Maybe lol, because if one is an in and another is a neutral, it makes two balls, then afterwards, you'll need a big stick!

3 0
4 years ago
Write a paragraph comparing protons, neutrons, and electrons. Be sure to include mass, location, and electric charge.
morpeh [17]

Answer:

Explanation:

Dalton's Atomic Theory explained a lot about matter, chemicals, and chemical reactions. Nevertheless, it was not entirely accurate, because contrary to what Dalton believed, atoms can, in fact, be broken apart into smaller subunits or subatomic particles. We have been talking about the electron in great detail, but there are two other particles of interest to us: protons and neutrons. We already learned that J. J. Thomson discovered a negatively charged particle, called the electron. Rutherford proposed that these electrons orbit a positive nucleus. In subsequent experiments, he found that there is a smaller positively charged particle in the nucleus, called a proton. There is also a third subatomic particle, known as a neutron.

5 0
3 years ago
Read 2 more answers
What are the values of the solute amount in moles and the solution volume in liters.
worty [1.4K]

Answer:

0.250L of solution. 0.250 moles of solute.

Explanation:

As you can see in the image, there is a beaker with an amount of solution. 1/2L are 500mL and each line of the beaker represents 100mL. That means the volume of the solution is approximately 250mL = 0.250L

Molarity is an unit of concentration defined as the moles of solute per liter of solution. A solution that is 1.000M contains 1.000 moles of solute per liter of solution.

As the volume of the solution is 0.250L, the moles are:

0.250L * (1.000mol/L) = 0.250 moles of solute

3 0
3 years ago
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