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Ahmad
Questions and answers by
Ahmad
Questions (46)
The density of 95.2 % (weight percent) of H2SO4 is 1.53 g/ml.calculate the molarity of this solution.
4 answers
2,076 views
How does a doorbell work?
2 answers
662 views
i need to choose a paint where design element and visual element in 1 paint could you help me to choose that paint and telling
10 answers
685 views
I am having trouble with some of this question.
'A student standing at the top of a cliff shoots an arrow from a height of 30.0 m
2 answers
772 views
1. Use the following information about a group of college students: Fifty percent are taking Algebra. Sixty percent are taking
1 answer
861 views
The sum of the firest 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
5 answers
2,532 views
The sum of the firest 9 terms of an A.P is 72 and the sum of the next 9 terms is 71, find the A.P
1 answer
388 views
Two blocks with masses m1 = 7 kg and m2 = 4 kg are connected with a
rope and move on two surfaces of a right-angled wedge as
3 answers
840 views
Calculate the amount of heat required to take 3.00kg of ice at -10 degrees Celsius to 115 degrees celsius.
2 answers
602 views
Pat and Kris are roommates. They spend most of their time studying (of course), but they leave some time for their favorite
1 answer
1,056 views
Lab on Determining hard water
Not sure if I answered this currently, not completely sure how to explain either. If a student has
3 answers
1,139 views
Lab on Determining hard water
Not sure if I answered this currently, not completely sure how to explain either. If a student has
1 answer
980 views
calculate the pH of a 0.50 m solution of HCN. Ka for HCN is 4.9*10^-10
(The chemical equation for this.)
4 answers
2,584 views
Gravity on the surface of the moon is only 1
6 as strong as gravity on the Earth. What is the weight of a 30 kg object on the
2 answers
608 views
a compound contains only carbon hydrogen and oxygen analysis of a sample showed that it contained by mass 53.4% carbon and 11.1%
4 answers
2,241 views
A soccer ball rolling across a field with an acceleration of -0.5m/s/s rolls 12.5 m and then comes to a stop after 8 seconds.
4 answers
927 views
Two springs, each with spring constant 20 N/m, are connected in parallel, and the combination is hung vertically from one end. A
3 answers
1,417 views
A 22-N force, parallel to the incline, is required to push a certain crate at a velocity of 6.1 up a frictionless incline that
2 answers
578 views
The oxidation number of kromium in k2Cr2O7
1 answer
452 views
A ball is projected upward at time t = 0.0 s, from a point on a roof 40 m above the ground. The ball rises, then falls and
4 answers
2,287 views
The parallel sider of a trapezium are 25 cm and 11 cm, while its nonparallel sides are 15 cm and 13 cm. find the area of the
4 answers
1,142 views
The volume of a block of a gold is 0.5 m sqare. if it is hammered into a sheet to cover an area of 1 hectare,find the thicness
4 answers
843 views
2 water pipe inlets pumping water into a tank. Pipe "A" fills up the tank in 30 minutes. Pipe "B" fills up the tank in 90
1 answer
488 views
Myerson borrowed $8,500 at 9% ordinary interest for 200 days. After 120 days, he made a partial payment of $4,000. What is the
5 answers
4,036 views
A disk with a rotational inertia of 1.4 kg×m2 and a radius of 0.8 m rotates on a frictionless fixed axis perpendicular to the
2 answers
1,180 views
Acid in vinegar has pka value of 1.85 x 10^-5 at 25oC find the pkb value of its conjugate base?
2 answers
473 views
A 8.8-kg object is moving at 5.3 m/s. A 7.4-N force is applied in the direction of motion and then removed after the object has
2 answers
499 views
A 8.4-kg block is lifted vertically 9.0 m at constant speed by a boy. The work done by the boy is about:
2 answers
599 views
x is partly constant and partly varies as y^2 when y =11,x=52.8and when y = 5 and x = 8 find (a) equation connecting x and y (b)
2 answers
819 views
A cross-section of a parabolic reflector and bulb is located at the focus is 16cm.find the equation of the parabola and the
4 answers
1,378 views
If 20dm³ of hydrogen where collected over water at 17°C and 797knm² pressure
A. Calculate the pressure of a drying hydrogen
2 answers
519 views
Write down the importance of rivers in pakistan?
1 answer
349 views
You are the IT manager of an Elementary School. The school is adding computers that have been donated by a local company. An
1 answer
495 views
a force of 2N stretches an elastic material by 30mm. What additional force will stretch the material by 35mmassuming the elastic
3 answers
576 views
A relative density bottle weight 20g when empty, 80g when field with water and 100g when with a liquid. Fine the relative
4 answers
1,219 views
A body weigh of 0.26N in air. When total emmers in water weight 0.16h and 0.18n in another liquid. Calculate the relative
1 answer
436 views
A girl spent 1/4 of her money on bus fare and 2/3 of the remaining on drink.what fraction of her original money was 1- spent 2-
4 answers
2,022 views
out of 80 student in ss3, each student offers at least one of chemistry and physics. if 50 students off chemistry and 42 student
3 answers
342 views
A 0.25 kg block oscillates on the end of a spring with a spring constant of 100 Nim, If the oscillation is started by elongating
3 answers
632 views
Two objects were
projected vertically upwards at different time with a speed ofTwo objects were projected vertically upwards at
4 answers
193 views
a solution contains 1.569mg of CoSO4 (155g/mol)per milliliter. calculate the volume of 0.009275M Zn needed to titrate the excess
2 answers
217 views
Remembering that the Latin prefix "non" means “not, '' or the reverse of” use the context clues provided in the passage to
1 answer
110 views
The path of water sprayed from a fountain is modeled by h=−4.9t2+58.8t,
where h is the height of the water in meters after t
3 answers
146 views
What is observed when ammonia gas is highly soluble in water
2 answers
91 views
What would be observed when the boiling point of chlorine is lower than that of iodine
2 answers
106 views
Derive the square root of 622521
1 answer
23 views
Answers (52)
*Heat to concentrate the solution *Allow the concentrated solution to cool to form Crystal's *Filter the crystals *Wash and dry crystals between filter paper
When the product is 1/2 and reactant is also 1/2 , Then, Kc=1/2÷1/2 =1/2×2/1 = 1 So, as half reactants have changed to product so the completion percentage is 50%. Note: you can't take both 1 because you can't say that products are formed without
Kelyse's preschool tuition is $180 per week. She receives a small discount for honor roll, $50 per month. Her grandparents help out and pays 20% of her tuition. How much do her grandparents pay?
20.6
Is assignment please help me If the time town A (long 90% w) is 6:00pm an Wednesday what will the time and day be at town B (long 120% E) showing your work dearly
Thank you for answering my question
Yes
Two objects were projected vertically upwards at different time with a speed ofTwo objects were projected vertically upwards at different time with a speed of 80ms-¹ and 100ms-¹ respectively.if the time interval is 2 sec,when and where would they meet.?
Two objects were projected vertically upwards at different time with a speed ofTwo objects were projected vertically upwards at different time with a speed of 80ms-¹ and 100ms-¹ respectively.if the time interval is 2 sec,when and where would they meet.?
The efficiency of a machine is 60℅,find In joules the work done by a student using the machine to rise a load of 150kg through a vertical distance or 2.5 m (g=10m/s2)
I need an answer
I guess the answer is 0.157 MeV.
A 20 inch board is 4 times to be cut into three pieces so that the second piece is as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece, find the lengths of all three
yes
Question
Show me solution
Voltage source is required in this question.
A relative density bottle weight 20g when empty, 80g when field with water and 100g when with a liquid. Fine the relative density of liquid.
Thanks Zara 😎
x/5 = 2x-9 x = 10x - 45 45 = 10x - x 45 = 9x 45/9 = x 5 = x
90degrees
If some volatile impurities in the crucible are not burned ofT in step I but are renmoved in step l, is the reported percent mass of water in the hydrated salt too high or too low? Explain
You have saved $130 for a new pair of skis. They have a regular price of $189. They have been reduced by 30%. .? Show your work what is the sale price of the skis
Hi.deer how can I got good ststiking for any surface .when I pliting spray chrome .and what is a good activouter. Thanks
I need the simplest step to. Solve step by step
Need calaculation step by step
A good leader must fulfill all campaign promises by so doing people will trust him and his follower
A movie cost 3,254,107 to produce.what digit is in the hundred thousands place?
so helpfull
Chemical property
3 sailboats to 6 fan boats
A bear was seen near a campground. Searchers were dispatched to the region to find the bear. A)Assume the bear can walk in any direction at a rate of 2 miles per hour. Suppose the bear was last seen 4 hours ago. How large an area must the searchers cover?
18.75L
1.2E-4 mols/kg
Jdj
tell me
60 kg * 5 m/s + 40 kg * 0 m/s = (60 kg + 40 kg) * v_final 300 kg*m/s = 100 kg * v_final 3 m/s = v_final
answer is 1,638,400 18 generations original is not included
I want the answer. Where is it ?
0.5J
test
ans is bias-free language.
I or we is the answer.
So in this case, that a small amount of your unknown failed to dissolve in the t-butanol, it would effect the molar mass, just depending on the mass of both substances?
Thanks you Dr.Bob222. So the overall idea is that dissociation decreases molar mass and association does the opposite when a solute dissolves in a solvent. (How do you identify if either reaction occurs? Just wondering.)
Thanks
Express the given quantity as a single logarithm. ln(1+x^8)+ln(x)- ln(sin(x))
Okay! Thank you so much
I can see the motion which is the line for visual element and i can see the balance in design element... Am i right?
Okay but what are the elements in it? i mean in that painting for visual element is it the color ? and for design element is it balance?
