10/18/24

Reactions and Mechanisms
Write a chemical equation for the reaction of 1-butanol with each of the following: (a) Sodium amide (NaNH2)(b) Hydrogen bromide, heat(c) Sodium bromide, sulfuric acid, heat (d) Phosphorus... more
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10/10/24

Moles contained in 50g mgcl2
How many are contained in 50g mgcl2
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10/09/24

Chemical Engineering Question
An oxygen tank with a volume of 2.5 ft3 is kept in a room at 50°F. An engineer has used theideal gas equation of state to determine that if the tank is first evacuated and then charged with 35.3lbm... more
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10/08/24

An arrow is fired with a velocity of 93 m/s at an angle of 18 degrees to the horizontal. How far does the arrow travel?
Projectile motion at angles.
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10/07/24

An atom of carbon-11 emits a positron. Express your answer as a nuclear equation.
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10/07/24

Physics problem about nonconservative forces
A 20.0-kg child descends a slide 2.30 m high and reaches the bottom with a speed of 1.45 m/s. How much thermal energy due to friction was generated in this process?
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10/05/24

How many batches? Fraction

Malik has 3/4 pounds chicken and he uses 3/8 pound to make one batch of egg rolls. How many batches of egg rolls can he make?Bring it on my 5th graders!
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10/05/24

Finding products of the given reactions, considering regiochemistry where applicable.
What would be the products for the following reactions, considering regiochemistry where applicable, whilst noting that some reactions may yield multple products.a) (R)-(tert-butyl)cyclohex-1-ene... more
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04/18/24

finding frequency in chemistry problem
A local FM radio station broadcasts at an energy of 6.12 * 10^-29 kJ/photon. (1 MHz=10^6 s^-1) Calculate the frequency at which it is broadcasting. Frequency = _____MHz
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04/17/24

Displacement, velocity and acceleration

A large boulder is ejected vertically upward from a volcano with an initial speed of 50 m/s. Ignoring air resistance:a) At what time after being ejected is the boulder moving at 25 m/s upward?b) At... more
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04/17/24

Measurements and Calculating Measurement Error
If a thin piece of wire is measured with a Vernier calliper and produces the following lengths: 1.23±0.05mm, 1.19±0.04mm and 1.21±0.05mm, how can the length of wire be determined along with its... more
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04/16/24

Calculate the energy in J?
Calculate the energy released, in J, when 1.00 kg of uranium-235 undergoes the following fission process. ¹₀n + ²³⁵₉₂U → ¹³⁶₅₃I + ⁹⁶₃₉Y + 4¹₀nIodine-136: 135.8401 amuYttrium-96: 95.8629... more
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04/16/24

What is this energy in kj/mol?
A proton is accelerated to 13.8 MeV per particle. What is this energy in kJ/mol?
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04/16/24

Calculate the Energy released in kj
The easiest fusion reaction to initiate is ²₁H + ³₁H → ⁴₂He + ¹₀n Calculate the energy released, in kJ, per nucleus of ⁴₂He produced. The masses of the relevant particles are as follows (1 amu =... more
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03/14/24

Finding the concentration of an acid
25.0 mL of a solution of unknown concentration of fluorous acid is titrated by 20 mL of a 0.07 M solution of ammonium hydroxide. What is the concentration of the acid?
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03/14/24

volume required to bring solution to equivalence
What volume of 8.3 x 10-5 M yttrium (VI) hydroxide would be required to bring 55 mL of a 5.9 x 10-3 M sulfurous acid solution to equivalence?
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03/14/24

Determine the pH of the solution.
Determine the pH (to two decimal places) of the solution that is produced by mixing 1.21 mL of 3.65×10-3 M HCl with 69.3 mL of 9.43×10-3 M KH.
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05/16/23

SPH3U multi-step question on electromagnetic waves
You have two options that you are trying to select between when deciding upon who to use as your internet service provider.Option 1 - Fiber optic cableOption 2 - Connection from your antenna to a... more
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