Total # Posts: 31
If our eyes could see a slightly wider region of the electromagnetic spectrum, we would see a fifth line in the Balmer series emission spectrum. Calculate the wavelength ? associated with the fifth line. Express your answer with the appropriate units.
November 1, 2016
Math- Please check my answer
Mali-li has 6 1/3 yd of material. Her new skirt will take 2 1/3 yd. How much material will she have left after the skirt is made? My answer:4 Am I wrong? If I am, can you explain it to me please? Thank you in advance.
October 24, 2016
A 2.41 g lead weight, initially at 10.7 ∘C, is submerged in 8.08 g of water at 51.9 ∘C in an insulated container. Question: What is the final temperature of both the weight and the water at thermal equilibrium? Express the temperature in Celsius to three ...
October 19, 2016
A volume of 115 mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water. If the final temperature of the system is 21.40 ∘C , what is the mass of the steel bar? Use the following values: specific heat of ...
October 19, 2016
Please explain to me how to figure out the answers to these questions because I got them all wrong. Don't worry there's only 2.. 1.You roll a number cube 20 times. The number 4 is rolled 8 times. What is the experimental probability of rolling a 4? It's either A. ...
June 10, 2016
Please explain this to me because im really stumped here!!: The probability of winning a game is 20%. If you play 20 times, how many times should you expect to win? A.4 times B.10 times C.16 times PLEASE HELP!!!!
June 9, 2016
The number of blocks has 9 in the ones place. The number in the hundreds place is one more than the number in the tens place. Those two numbers equal 11.how many blocks are there?
January 19, 2016
There are 155 people at the basketball game. Tickets for the game are $2.50 for students and $4 for adults. If the total ticket money received is $492.50 how many students and adults attended the game?
February 1, 2015
A rope attached to a truck pulls a 180-kg motorcycle at 9.0 m/s. The rope exerts a 400-N force on the motorcycle at an angle of 15∘ above the horizontal. What is the work that the rope does in pulling the motorcycle 300 m? Express your answer with the appropriate units.
December 14, 2014
For the reaction below, when 216g of ICl3 reacts with 61.3g of H2O: 2ICl3 + 3H2O -> ICl + HIO3 + 5HCl a)which is the limiting reagent? b)how many grams of HIO3 are formed? c)how many grams of the nonlimiting reagent are left over?
September 25, 2012