07/11/18
Ammonia can be produced by the reaction of nitrogen and hydrogen. What is the maximum mass of ammonia that can be produced from a mixture of 33.1 grams nitrogen
Mass problem
07/11/18
A particular ion of a newly discovered element has a charge of -1, and contains 573 neutrons and 501 electrons. What would be the mass number
mass number problem
07/11/18
how many liters of oil are in the tank?
A cylindrical tank is halve-full of oil.
The cylinder has a base radius of 100cm.
The height of the cylinder is 250cm.
1 litre = 1000cm3
07/11/18
The molecular formula of the artificial sweetener aspartame is C14H18N2O5. How many millgrams of nitrogen are present in 3.15 grams of aspartame?
Chemistry mass
07/10/18
Algebra word question
b. The Marauders fooseball team is improving with each game. The first game they scored no points, but the second game they scored some goals. In their third game they scored 8 more points than the...
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07/09/18
An element has an atomic number of 78. The number of protons and electrons in a neutral atom of the element are
A. 78 protons and 0 electrons.B. 78 protons and 39 electrons.C. 39 protons and 39 electrons.D. 156 protons and 78 electrons. E. 78 protons and 78 electrons.
07/09/18
Heat capacity of the coffee cup calorimeter?
A reaction known to release 1.78kJ of heat took place in a coffee cup calorimeter containing 0.100L of solution where the temp rose by 3.65 deg. C.
In a second experiment, when 50.0mL of 0.20M...
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07/09/18
A 20 kg dog needs fluids at a rate of 60 mL/kg-24 h. What is the flow rate in mL/h?
I need help finding this answer. I would like to see how it is done.
07/09/18
A 10 lb cat is on a flow rate of 20 mL/kg-h. How much will it receive in 3 hours?
Looking for the answer.
07/09/18
A 10 kg dog needs i.v. fluids during surgery of 10 mL/kg-h. What is the flow rate in mL/h? What is the rate in mL/min?
10kg x 10mL/kg-h= 100mL/h 100mL/hr / 60 seconds = 1.6 mL/min
Is this correct?
07/09/18
The average height of mountain A is 19436 ft, and its average height is 8870 ft less than the sum of the average heights of mountains B and C
The average height of mountain A is 19436 ft, and its average height is 8870 ft less than the sum of the average heights of mountains B and C. The average height of mountain C is 272 ft less than...
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07/09/18
In the 2012-2013 school year, approximately 810000 foreign students studied in country
In the 2012-2013 school year, approximately 810000 foreign students studied in country A. The number of country A students who studied abroad that same year was about seven-fourtieths of the number...
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07/09/18
Evelina took 50 people fishing each day last week. The table shows the number of fish the group caught each day
Day Fish CaughtMonday 203Tuesday 186Wednesday 169Thursday ?Friday 135Saturday 118
how many fish did Evelina’s group catch on Thursday
07/08/18
someone help please!
Twin brothers, person A and person B, can mow their grandparent's lawn together in 12 minutes. Person A could mow the lawn by himself in 7 minutes less than it would take person B. how long would...
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07/08/18
The reaction shown below has a negative enthalpy change and a positive entropy change. 2O3 (g) yields 3O2 (g) Which of the following best describes this reactio
The reaction shown below has a negative enthalpy change and a positive entropy change.2O3 (g) yields 3O2 (g)Which of the following best describes this reaction?The reaction will only be spontaneous...
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07/07/18
Teresa drove 335 miles in 5 hours. At the same rate, how many miles would she drive in 12 hours ?
I have homework questions to ask and i really dont understand word problems.
07/06/18
Two step equations
187 in. long pipe is cut into three pieces such that the second piece is thirteen in. more than the first piece, and the third piece is twenty in. more than eight times the second piece.
07/05/18
NaOH (sodium hydroxide) C1=30%, V1=500 ml, C2=5%, V2=???
Solve the following problems. (You need not compute the amount of diluent)
07/05/18
HCL (hydrochloric acid): C1=100%, V1=20ml, C2=1%, V2=???
Solve the following problems and determine the amount of diluent.
07/05/18
Formalin: C1=10%, V1=???, C2= 2%, V2= 12L
Solve the following problems and determine the amount of diluent.
07/05/18
Isopropyl alcohol C1 = 100%, V1 = ? , C2 =70%, V2= 2.5 L
Solve the following problems and determine the amount of diluent.
07/05/18
a solution is made containing 4.6 g of sodium chloride per 250 g of water. What is the weight/weight% or percent by mass of the solute?
i need help
07/04/18
find the number
Two times the sum of some number plus 5 is equal to 9 times the difference of the number and 2. Find the number.
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