Chemistry, 02.03.2021 01:10 tylermorse3775

How many times as bright as a light that is 90 m away from you does a light that is 10 m away from you appear?

Answers: 1

Show answers

Answers

Answer from: dogeking12

81 x as bright

Explanation:

The intensity of light is dependent on distance according to this simple equation:

(90/10)^2 = 9^2

= 81

This was derived from the inverse-square law. Respectively a light that is 10 m away from you is 81 x as bright.

Answer from: Quest

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

Answer from: Quest

1.consider the following balanced equation and answer parts a through. show calculations for each part.

3 ag(s) + 4 hno3(aq) → 3 agno3(aq) + no(g) + 2 h2o(l)

a. calculate the number of moles of agno3 produced by the reaction of 3 moles of ag with excess hno3. if the number to the left of the compound represents the number of moles of the compound which are present, then 3 moles of ag react with 4 moles hno3 to produce 3 moles agno3 (aq).

so the answer to a would be 3 moles.

b. calculate the number of moles of agno3 produced by the reaction of 108 grams of ag with excess hno3.

i'm not sure how to plug in the grams of silver into an equation using moles to find how many moles are produced.

c. calculate the number of grams of agno3 produced by the reaction of 108 grams of ag with excess hno3

d. calculate the number of moles of no produced as a byproduct of the reaction of 108 grams of ag with excess hno3.

e. calculate the number of grams of no produced as a byproduct starting with 108 grams of ag and excess hno3.

explanation:

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 13:20, xfuartado

An aqueous solution of calcium hydroxide is standardized by titration with a 0.120 m solution of hydrobromic acid. if 16.5 ml of base are required to neutralize 27.5 ml of the acid, what is the molarity of the calcium hydroxide solution?

Answers: 3

continue

Chemistry, 23.06.2019 01:00, shri1301

Who examines and coordinates the cleanup of polluted sites?

Answers: 2

continue

Chemistry, 23.06.2019 07:40, wrestling2

What is the reduction potential of a hydrogen electrode that is still at standard pressure, but has ph = 5.65 , relative to the she?

Answers: 1

continue

Chemistry, 23.06.2019 11:30, junahsisney

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.

Answers: 1

continue

You know the right answer?

How many times as bright as a light that is 90 m away from you does a light that is 10 m away from y...