638 Answered Questions for the topic AP chemistry

Ap Chemistry Science Chemistry Physics

02/16/21

A block with mass m1 = 0.450 kg is released from rest on a frictionless track at a distance h1 = 2.85 m above the top of a table.
A block with mass m1 = 0.450 kg is released from rest on a frictionless track at a distance h1 = 2.85 m above the top of a table. It then collides elastically with an object having... more
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Ap Chemistry Science Chemistry Physics

02/16/21

An unstable nucleus of mass 1.7 ✕ 10−26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles.

An unstable nucleus of mass 1.7 ✕ 10−26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles. One particle, having a mass of m1 = 1.8 ✕ 10−27 kg, moves in... more
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Ap Chemistry Math Calculus Mathematics

02/16/21

Need help with math ASAP
Let f be the function defined by f(x)=4/(x^2).----------------------------------Approximate the value of 12(upper limit)∫1(lower limit) f(x) dx using a left Riemann sum with the... more
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Ap Chemistry Chemistry Biochemistry Chem

02/09/21

2 moles of Sodium sulfate is reacted with 3 moles of calcium chloride.  
2 moles of Sodium sulfate is reacted with 3 moles of calcium chloride.   Write a balanced chemical equation, including states of all reactants and products. Write a net ionic equation. Determine... more
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Ap Chemistry Chemistry

02/09/21

Please help with chemistry question
Calcium chloride (aq) reacts with sodium carbonate (aq) to from solid calcium carbonate and aqueous sodium chloride. Determine the volume of a 2.00 M Calcium chloride solution would be needed to... more
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Ap Chemistry Chemistry

02/09/21

How many moles of lead(II) hydroxide (solid) can be formed when 0.0225L of 0.135 M Pb(NO3)2 solution reacts with excess sodium hydroxide?

How many moles of lead(II) hydroxide (solid) can be formed when 0.0225L of 0.135 M Pb(NO3)2 solution reacts with excess sodium hydroxide?
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Ap Chemistry Chemistry

02/04/21

Sodium chloride was dissolved in water to produce a 1.5M solution. Explain what this concentration tells us about the NaCl solution. How might a chemist use this ratio?
Sodium chloride was dissolved in water to produce a 1.5M solution. Explain what this concentration tells us about the NaCl solution. How might a chemist use this ratio?
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Ap Chemistry Chemistry

02/04/21

What mass of P4 will completely react with 2.50 L of hydrogen gas, at 0 C and 1.50 atm pressure?
Consider the following reaction:P4(s) + 6H2(g) → 4PH3(g)What mass of P4 will completely react with 2.50 L of hydrogen gas, at 0 C and 1.50 atm pressure?
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Ap Chemistry Chemistry

01/31/21

Find the product and balance the following chemical equation. Explain your process.
Na3PO4 (aq) + Mg(NO3)2 (aq) → ?
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Ap Chemistry Math Calculus Precalculus

01/29/21

need help with math
x | 2 | 4 | 6 | 7 | 11-----------------------------------------------------------------------------------f(x) | 0.7 | 1.1 | 1.9 | 2.5 | 5.3The continuous function f is known to be... more
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Ap Chemistry Chemistry

01/24/21

What general relationship appears to exist between boiling point and number of electrons?
What general relationship appears to exist between boiling point and number of electrons?
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Ap Chemistry Chemistry

01/24/21

The temporary dipoles described above result in attractions known as London forces. Explain why these would be stronger between molecules of F2 than between molecules of H2.
The temporary dipoles described above result in attractions known as London forces. Explain why these would be stronger between molecules of F2 than between molecules of H2.
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Ap Chemistry Chemistry

01/16/21

Which of the following have the highest boiling point: a) propanone b) ethanol c) water d) ethanoic acid
Which of the following have the highest boiling point:a) propanoneb) ethanolc) waterd) ethanoic acid
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Ap Chemistry Chemistry

01/16/21

Does high vapour pressure mean easily evaporated or not easily evaporated?
Does high vapour pressure mean easily evaporated or not easily evaporated?
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Ap Chemistry Chemistry

01/16/21

What happens to boiling point if atmospheric pressure increases and decreases?
What happens to boiling point if atmospheric pressure increases and decreases?
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Ap Chemistry Chemistry

01/15/21

Identify the intermolecular forces in each of the following substances: a) HCl b) CH3CH3 c) CH3NH2 d) Kr
Identify the intermolecular forces in each of the following substances: a) HCl b) CH3CH3 c) CH3NH2 d) Kr
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Ap Chemistry Chemistry

01/15/21

Between CO2 and SO2 , only _____ will have dipole-dipole interaction because _____________________.
Between CO2 and SO2 , only _____ will have dipole-dipole interaction because _____________________.
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Ap Chemistry Chemistry

01/15/21

Write the following in the increasing order of boiling points:

Write the following in the increasing order of boiling points: a) H2S b) CH3CH3 c) CH3OH d) Ar
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Ap Chemistry Chemistry

01/15/21

Helpp PLZ urgentt

1. A compound contains 46.7% nitrogen and 53.3% oxygen. If the molecular mass of the compound is 60.0 g/mol, what is the molecular formula? 2. A compound is found to contain 24.8% carbon, 2.0%... more
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01/13/21

Chemistry weak bases
Trimethylamine, (CH3) 3N is a weak base (Kb = 6.3 × 10–5). What volume of this gas, measured at STP, must be dissolved in 2.5 L of solution to give that solution a pOH of 2.50?
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Ap Chemistry Chemistry Chem Ap Chem

01/13/21

Why is the lewis structure of H2S bent at an angle but not linear?
Why is the lewis structure of H2S bent at an angle but not linear? When I drew the lewis structure, I drew the two hydrogens at a an 180 degree angle with sulfur in the middle. How do I distinguish... more
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Ap Chemistry Chemistry Chem Ap Chem

01/12/21

Question about vapor pressure
A flask containing nothing other than air at 100.0 kPa is filled partway with water and then sealed and left to sit at 20C. The total pressure of a mixture of gases is equal to the sum of the... more
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Ap Chemistry Chemistry Chem Ap Chem

01/11/21

Rank each of the below molecules' melting point and boiling point from scale of 1 (lowest) to 7 (highest) and explain why:
Rank each of the below molecules' melting point and boiling point from scale of 1 (lowest) to 7 (highest) and explain why:a) HCIb) H2c) H2Od) NH3e) CCI4f) CO2e) HBr
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Ap Chemistry Chemistry Physics

01/10/21

converts these plz help
1. How many molecules in a sample of NaClO with a mass of 3.90g.2. 2.4g of CO2 would have how many Oxygen atoms.3. 1.63 x 10^22 molecules of CH3COONa to grams4. 3.6g AlPO4 to moles5. 2.4g Na2SO4 to... more
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Ap Chemistry Chemistry Physics

01/10/21

Helpp plzz i need answers

1. 1.29 x 10^24 atoms of HF to grams2. 3.14g of H2O to molecules3. 2.79g NH3 to atoms4. 4.90 mol Al2O3 to grams. To atoms5. 3.56g of Cu to atoms6. Mass of a sample of NO2 with 1.54 x 10^24 atoms.
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