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Kris
Questions and answers by
Kris
, page 2
Questions (163)
What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each
2 answers
592 views
What mass in kg of NH3 must be used to produce 4.4 multiplied by 106 kg HNO3 by the Ostwald process, assuming 100% yield in each
1 answer
369 views
Consider the following unbalanced reaction.
P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the
2 answers
681 views
Consider the following unbalanced reaction.
P4(s) + F2(g) PF3(g) How many grams of F2 are needed to produce 212 g of PF3 if the
11 answers
863 views
Commercial brass, an alloy of Zn and Cu, reacts with hydrochloric acid as follows.
Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g) (Cu does
9 answers
2,534 views
Nitric acid is produced commercially by the Ostwald process, represented by the following equations.
4 NH3(g) + 5 O2(g) 4 NO(g) +
3 answers
928 views
Bacterial digestion is an economical method of sewage treatment.
5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) +
1 answer
717 views
BaO2(s) + 2 HCl(aq) H2O2(aq) + BaCl2(aq)
What amount of hydrogen peroxide should result when 1.00 g of barium peroxide is treated
2 answers
619 views
I am confused, selenium Se, is on the periodic table, but does it combine with other elements on the periodic table? I want to
1 answer
436 views
How man moles of sodium phosphate are there in 0.4 liters of 0.1M Na2HPO4 (MW=141.96 g/mol)?
2.) How many millimoles in 200 ml?
3 answers
427 views
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
1 answer
311 views
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
1 answer
297 views
How many milligram of lysozyme (MW=14,600 g/mol) are needed to make 3 liters of a 10^-6 M solution?
1 answer
356 views
Casper bought some pencils at $.50 each. He had $3 left after the purchase. If he wanted to buy the same number of note pads at
3 answers
1,534 views
(cos πx + sin πy)4 = 54; Implicit Differentation
4 answers
707 views
What is the number of different squares which can be inscribed in a given equilateral triangle?
4 answers
asked by
Kris
721 views
A rocket fired straight up is tracked by an observer on the ground a mile away.
a)Show that when the angle of elevation is theta,
3 answers
2,241 views
Use a table of t-values to estimate the P-value for the specified one-mean t-test. Left-tailed test, n=12, t= -3.412. a=p<0.005.
1 answer
746 views
Solve it step by step so I can't do the rest.
lim x->-infinity (ax^2+b)/(cx+d) Thank you!
1 answer
322 views
Solve it step by step so I can't do the rest.
lim x->-infinity (ax^2+b)/(cx+d) Thank you! Answer th
1 answer
384 views
Justin is 10 years less than half his father's age. If Justin is 12 years old, how old is his father?
2 answers
1,032 views
is 100 over 1000 10%?
4 answers
334 views
How many grams of glycolic acid are needed to react with 30 mL of 0.1 M NaOH?
2 answers
851 views
What is the sum of all the positive numbers smaller than 100,000 where all digits can only be 1 or 0.
1 answer
356 views
Multiply. Write each product in simplest form.
1. 2 3/8 * 1 3/5 = 3 4/5 2. 1 5/6 * 2/3 = 11/10 3. 7/8 * 3 1/3 = 35/27 Do I have
3 answers
902 views
3 3/5 * 5/6 = 90/45
Do I have correct answer?
1 answer
318 views
This isosceles triangle has two sides of equal length, a, that are longer than the length of the base, b. The perimeter of the
19 answers
12,164 views
Hydrolysis of a compound A, C7H6cl2 was carried out by refluxing with excess potassium hydroxide solution. the resulting
3 answers
1,131 views
How many packs of DVDs can you buy with 198 dollars if one pack costs 18 dollars
3 answers
763 views
1.Using Nerst, find the E of the cell for the dicromate redox system:
A.under standard conditions. B.under neutral solutions
1 answer
419 views
1.Using Nerst, find the E of the cell for the dicromate redox system:
A.under standard conditions. B.under neutral solutions
1 answer
429 views
A student fires a rocket at 24 degrees above the horizontal. The 10kg rocket comes out of the gun barrel at 1000 m/s, and
1 answer
390 views
Ken planted 8 flowers and 4 shrubs in his mother's garden. He ran out of fertilizer before he planted 2 of the flowers and 1 of
4 answers
725 views
A helicopter flies south at 185km/hr relative to the ground. The wind is blowing 60km/hr to the west compared to the ground.
2 answers
536 views
A sample of steam with a mass of 0.530g and at a temperature of 100 ∘C condenses into an insulated container holding 4.40g of
1 answer
870 views
Find the indefinite integral.
∫xe^-4xdx
2 answers
566 views
Name three properties of metal for which metallic bonds are responsible
1 answer
396 views
Oil and water don't mix. We say that oil is
3 answers
480 views
Calculate the concentration of all species in a 0.145M solution of H2CO3
2 answers
1,082 views
Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25%
2 answers
1,227 views
Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25%
1 answer
922 views
Stereo Inc. sells a stereo system for $300 down and monthly payments of $40 for the next 2 years. If the interest rate is 3.25%
4 answers
1,794 views
Hi! I am having some trouble with this question, can you please help me?
Which of the following describe chemical properties?
2 answers
1,206 views
Can you check to see if I'm correct?
Which of these substances are elements? a. silicone b. quartz c. iodine d. water e. silicon
4 answers
4,071 views
A bus travels 400 Miles in 8 hours how many miles will the bus travel in 2 days
2 answers
713 views
A bus travels 400 Miles in 8 hours how many miles will the bus travel in 2 days
2 answers
661 views
What mass of water is produced from 10g of sulfuric acid ?
2 answers
611 views
(3-4yi)(6+7i)-[(2-3yi)-3(1+7i)]
Express it in a+bi form I got 19+42i-21yi+28y but I do not know how to express it in a+bi form,
1 answer
427 views
A computer is purchased at 2000$. After each year, the resale value decreases by 25%. What will the resale value be after 3
2 answers
537 views
In a friendly neighborhood squirt gun contest a participant runs at 7.8 m/s horizontally off the back deck and fires her squirt
4 answers
2,692 views
The only way to get to Ship Island is to take a boat, which is free for 2 and under, $17 for children 3 to 10 years old, $25 for
1 answer
396 views
Elastic behavior: when loads are small how much deformation occurs? What materials deform least?
2 answers
1,090 views
Suppose that f(x)=x^[1/3](x+3)^[2/3]
(A) Find all critical values of f. If there are no critical values, enter None . If there
3 answers
2,367 views
Suppose that f(x)=x−7x^[1/7]
(A) Find all critical values of f. (B) Use interval notation to indicate where f(x) is increasing
3 answers
2,071 views
Describe the civil war in Syria and Yemen. How are they similar? How are they different?
15 answers
3,578 views
The population of algae cells in a sample is growing exponentially by 9% each hour. The
initial population is 8000. Use the
1 answer
232 views
A hospital patient is hypertensive, with a blood pressure of 160/99. Which symptom below would be a likely side effect of this
1 answer
218 views
At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 24
4 answers
4,126 views
Fine The radius of 17my of a circle
1 answer
148 views
Let us throw a particle of mass m from the north pole with a velocity v_0 forming an angle α with the surface of the earth.
1 answer
313 views
If the exterior angle of the vertex is 110, then the measure of the angle of each base is ___ and the measure of the vertex
1 answer
175 views
Draw a plan of a room 90m2 using a scale 1cm :3m
1 answer
63 views
An aeroplane is flying horizontally at 80m in still air.if the aviator wishes to flydue South and the wind blowing the south
1 answer
109 views
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