Used the equation Density=Mass/Volume to solve this one.
By eating foods with high vitamin c in them, and recording the difference in your health. How to test for vitamin C: 1. Draw up 2cm3 of lemon/orange juice (or the substance you're wanting to test for vitamin C) into a syringe. 2. Add it drop by drop into 2cm3 of a 0.1% solution of DCIP (a blue dye) 3. The dye will turn colourless if vitamin C is present
1. Crush the apple and shake it in warm water to extract the soluble substances 2. Take some of the water that had the apple in it and add it to 2cm3 of a 0.1% solution of DCIP (a blue dye) 3. If vitamin C is present, the blue dye will go colourless
Pole strength in SI is the Ampere-meter, A*m A = 10-1*c*Fr/s Fr = Franklins = g1/2cm3/2/s m = 102cm So in CGS, pole strength would have the following unit: 101cm5/2*g1/2*c/s2 where cm = centimeter, c = the speed of light, s = seconds and g =gram
Sudan red can be used to test for lipids. It is soluble in lipids so it will turn the entire sample red. Also, you can do the brown paper test. Put a few drops of the suspected lipid onto a brown paper bag. If the substance is a lipid, it will turn the spots translucent.
Density = Mass/Volume = 21g/2cm3 = 10.5 grams per cm3
Density = mass/volume Density of the cube = 8g/2cm3 = 4g/cm3
Density = Mass/Volume = 3.18/2 = 1.59 grams per cm3
30g/cm3
Density=M/V there's your answer... i am doing the same test...only i have about 10 questions...aw
Mass = 15 gm Volume = 2 cubic cm Density = Mass/Volume = 15/2 = 7 and 1/2 or 7.5 g per cm3
What you do find the volume by multiplying the height the width and the length So... 3x2x1=6 Then you divide the mass by the volume m/v= 12 / 6 So... The answer is 2cm3
d=M/V where d:density M:mass V:volume we know that 1L=1000ml so 5ml=0.005l we have to convert 0.005ml into cube M .1L=1 cube dm so 0.005L=0.005 cube dm.1 cube m=1000 cube dm so 0.005 cube dm=5 cube m d=2g/5 cube m d=0.4g/cube m or d=2g/5ml d=0.4g/ml(d=0.4)
the simple rule is that if your density is higher than the substance it will sink and if it is lower it will float density= mass divided by volume. Example:Mass 7.5g Volume:2cm3 so 7.5 Divided by 2= 3.75g/cm3 that is your density of object
How to test for vitamin C: 1. Draw up 2cm3 of lemon/orange juice (or the substance you're wanting to test for vitamin C) into a syringe. 2. Add it drop by drop into 2cm3 of a 0.1% solution of DCIP (a blue dye) 3. The dye will turn colourless if vitamin C is present
that's just like asking how many grains of sand are on a beach...... what you could do is... measure the size of a grain of sugar - width, length, height and times these together to find its volume. then empty a bag of sugar and fill it with water, until where the sugar reaches when filled. pour the water into a measuring jug - you now have the volume of sugar that the bag takes in cm3. the grains of sugar will have a few air spaces between them so take a rough guess at this amount - maybe 1-2cm3 now minus this from the volume of the bag. divide the volume of the bag by the volume of one grain of sugar. this will be an approximate figure of how many grains there are.
So your cube is 2cm3? Right, lets do some maths! Okay, so the surface area is taking your cube, and cutting along the edge to show a net of the cube. So the maths is: 2x2x6, the 2x2 because the square will be 2cm high by 2cm wide, the 6 becuase a cube has 6 sides. 2x2x6=24, so the answer for Surface Area is 24cm2. Now for the Volume, the volume is the width x length x depth, which is easy. 2x2x2= 8, so the answer for Volume is 8cm3. So the SA:V ratio is 24:8. Hope that helps!