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aalyn [17]
2 years ago
12

Please I need help with this. Whoever answers it correctly will get Brainly

Chemistry
1 answer:
Umnica [9.8K]2 years ago
7 0

Answer:

its a. the one about the wolves. its not the last one, bc animals that graze (eat grass & plants) mostly eat that, and rarely eat meat

<333 now give me brainliest babe

Explanation:

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What volume is occupied by 22.1 g of O2 at 52°C and a pressure of 1.63 atm?
Nutka1998 [239]
U can use PV=nRT
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3 0
2 years ago
Atoms in a stay in a fixed position and have no freedom to move.
Alex73 [517]
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3 years ago
What is the boiling point of a solution of 12.0 g of urea in 165.0 g of water
Nat2105 [25]

Answer:

T = 100.63 °C

Explanation:

To solve this question, we need to know what are we talking about here. In this case, we want to know the boiling point of a solution with Urea in water. This is a colligative property, so, the expression to use to calculate that is the following:

ΔT = m * K / MM * kg water (1)

Where:

ΔT: difference of temperatures (Tb of solution - Tb water)

m: mass of the urea

K: ebulloscopic constant of the water (0.52 ° C / m)

MM: molecular mass of urea

The boiling point of water is 100 °C, we have the mass of the urea, but not the molar mass. The urea has the formula CH₄N₂O, so the molar mass can be calculated using the atomic mass of the elements (I will use a rounded number for this):

MM = 12 + (4*1) + (2*14) + 16 = 60 g/mol

Now, we can calculate the ΔT and then, the boiling point of the solution:

ΔT = 12 * 0.52 / 60 * 0.165

ΔT = 6.24 / 9.9

ΔT = 0.63 °C

the value of ΔT is a difference between the boling point of water and the solution so:

ΔT = Ts - Tw

Ts = ΔT + Tw

Replacing we have:

Ts = 100 + 0.63

<h2>Ts = 100.63 ° C</h2>
8 0
3 years ago
Which of the compounds in the table below is listed in the wrong colum?
Sveta_85 [38]

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2 years ago
Given the formulas for the ionic compounds, draw the correct ratio of cations to anions (a) BaSO4, (b) CaF2, (c) Mg3N2, (d) K2O.
Karolina [17]

Answer:

A. It formed by barium(Ba+2) ion and sulfate ( SO42- )

B. It is formed by calcium ion (Ca+2) and two fluoride ions (2F-)

C. It is formed by magnesium ion (Mg+2) and nitride ion (N3-)

D. It is formed by two potassium ions (2 K+) and oxide ion(O2-)

3 0
3 years ago
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