Questions Asked on
July 3, 2017

science
Calculate the number of ions present in 7.45 grams of potassium oxide. ( At.mass of K= 39u).
asked by elby 
Chemistry
Write the net ionic equation for the precipitation of zinc carbonate from aqueous solution:
asked by Ashley 
Chemistry
Write the net ionic equation for the precipitation of iron(II) sulfide from aqueous solution:
asked by Ashlei 
Chemistry
Write the net ionic equation for the precipitation of manganese(II) carbonate from aqueous solution:
asked by Ashlei 
Chemistry
Expressing amounts of energy in different energy units is necessary to solve many chemistry problems. For practice, complete the following table. FILL IN THE BLANKS PLEASE. The Joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J J cal kJ 695 ___
asked by Anonymous 
maths
Find the quotient of 4 7 and 3 5 . Give your answer as a fraction in its simplest form.
asked by Rippin 
History
1: Part one: What are some facts about Plessy v. Ferguson? *I know that Plessy v. Ferguson is an example of judical review where citizens challenged a law through courts.* Part two: What are the case outcomes and significance? *I think its that when the
asked by Rose 
Math
If m∠FCG = 9x + 3 and m∠GCB = 13x – 9, find m∠GCB
asked by Anonymous 
Biochemistry
You are asked to make 50 mM TrisHCl pH 7.5. The pK of Tris is 8.1. What is the concentration of the components (Tris and TrisH+) in the final buffer solution?
asked by Alberto 
Physics II
Two long straight parallel wires separated by L2 = 8.16 cm carry currents of equal magnitude but heading in opposite directions. The wires are shown perpendicular to the plane of this page. Point P is L1 = 1.96 cm from wire 1 and the magnetic field at
asked by Tina 
Maths
The temperature at 6pm of town was 37 degree c at mid night the temperature was 31 degree c if the rise in temperature per hour
asked by Maths 
Science
10 examples for suspension
asked by Om 
Physics
The greatest and least resultant of two forces acting at a point are 16N and 4N.if they are acting at an angle 120 with one another their resultant is
asked by Komathan 
Chemistry
A dime is found to have a mass of 2.33 grams. Using unit analysis, show what the mass of this dime is in kilograms. 2.33 grams x ________ _______ (number) (unit) ________________________________________________ ________ ________ (number) (unit) = ? ___ kg
asked by Anonymous 
Geometry
To the nearest tenth, find the perimeter of ΔABC with vertices A(2,4), B(2,1) and C(2,1). Show your work.
asked by Crystal 
English
My mother feels (bad, badly) about what happened. I think that it is bad.
asked by Joe 
math
Answer to this questions Please *Question 8* A clock strikes once at 1 o’clock (am or pm), twice at 2 o’clock (am or pm), thrice at 3 o’clock (am or pm) and so on. How many times will it strike in 24 hours? Select one: 1. 78 2. 136 3. 156 4. 196
asked by Tosin 
Chemistry
How many milliliters of an aqueous solution of 0.138 M potassium nitrate is needed to obtain 19.4 grams of the salt?
asked by Ashlei 
Biochemistry
You are asked to prepare 2 L of 50 mM sodium phosphate pH 7.0. The pK2 of phosphate is 6.8. What are the amounts of sodium phosphate mono basic monohydrate (NaH2PO4 • 1H2O, MW=137.99 Da) and anhydrous sodium phosphate dibasic (Na2HPO4, MW=141.96 Da) that
asked by Alberto 
Chemistry
You need to make an aqueous solution of 0.233 M magnesium nitrate for an experiment in lab, using a 125 mL volumetric flask. How much solid magnesium nitrate should you add? (fill in blank) __ grams
asked by Ashley 
Chemistry
How many meters are there in one picometer?
asked by Ashlei 
Chemistry
Find active mass of 4gm of H2. Please solve it and explain it.
asked by ABC 
math
A card is selected from a deck. Find the following probabilities. A standard deck of cards has 52 Cards. There are 13 values and 4 suits. Suits are Spades, Clubs, Diamonds and Hearts. Each suit has 13 cards. There are 3 face cards Jack, Queen, and King. a
asked by Erica 
Physics II
A defibrillator passes a brief burst of current through the heart to restore normal beating. In one such defibrillator, a 47.0 μF capacitor is charged to 5.91 kV. Paddles are used to make an electrical connection to the patient's chest. A pulse of current
asked by Tina 
Math
If three teachers can grade 40 tests in 3 hours, how many hours will it take 12 teachers to grade 480 tests?
asked by Lucy 
quantitative apptitude
a sum required to earn a monthly income of 1200 at 18% per annum then SI?
asked by lakshmi 
intro to algebra
Hookes law states that the distance that a spring is stretched by hanging object varies directly as the mass of the object. If the distance is 20 cm when the mass is 3kg, what is the distance when the mass is 5 kg?
asked by Anonymous 
Math
Can any body please explain A dejuicer was able to squeeze 1/5 of a pint of juice from a bag of oranges. This amount of juice filled up 1/8 of a jug. At this rate, how many bags will it take to fill the entire jug?
asked by kk 
morgan
A Gantt chart is good for planning but not an effective tool for control. . True False
asked by mo 
math
Kathy went shopping with a certain amount of money. She spent 1/4 of it on shoes, 1/5 of it on lunch and 78 of it on cloths. She had 21 left. How much money did she have at first.
asked by GJ 
chemistry
How many grams of Al2(SO4)3 can be produced from 10.0g of CuSO4?
asked by Nicole 
bio
How Does exponential growth affects the 5 scientific principles of sustainability,reliance of solar energy,biodiversity,population control and nutrient recycling
asked by emmanuel 
chemistry
At a given temperature, for a reversible reaction , if the concentration of reactants is doubled then the equilibrium costant will (a) be doubled (b) be halved (c) change to 1/3 (d) remaine same
asked by annapurna 
physics
Ball 1 is moving to the right at speed Vo when it collides with ball 2  is initially at rest. After the collision, ball 1 's initial KE decreases by 80% and has a velocity at an angle of 40 degress below the horizontal. what fraction of the initial KE
asked by Riley 
Math
What is smallest 3 digit number using 1,0,6,2,9,7, with digits repeated and without digits repeated?
asked by Gail 
Math
The sum of the numerator and denominator of a fraction is 3 less than twice the denomiator.If the numerator and denomiator are decreased by 1,the numerator becomes half the denominator. Determine the fraction
asked by Ashish 
maths
A woman is three times as old as her son just in 12years to came the woman will be twice as old as the son how old is the woman now?
asked by Kemigisa 
Chemistry
Which one of these properties is directly proportional to molality and why? A) Electrical conductance B) Heat of solution C) Equilibrium of solution D) Vapour pressure Thanks
asked by MAD 
geometry
find the focus of x^2+4y^2+2x+24y++28=0. Thank you
asked by unowen 
History
How does the Supreme court affect the rights of citizens? *They affect citizens by looking into judical law before correcting political circumstances. Is my answer okay or should I fix it? Can you help me? I'm not 100% sure. Thank you :)
asked by Rose 
kyc
in a 2 digit number sum of two digit is 7 of the difference of two digit number and number obtained by reversing the degit is 9 find the numbers
asked by manan 
English
1. Let's get out of here. 2. Let's go out of here.  Do you use only #1? What about #2? Why is #1 used frequently?
asked by rfvv 
Math
Which is the largest 6 digit odd number without the repitition of the digits
asked by An 
Anonymous
what is 8 divided by 100
asked by Anonymous 
Responsibilities
what are the responsibility of keep us safe and perfected from any harm and danger
asked by Charvie 
math
i am a 3 digit number. my ones is one more than my tens. my tens digit is 0. my hundreds is 4 more than my ones. what number am i?
asked by josh