# Posts by annonomus

Total # Posts: 24

**Maths**

Pete notices the receipt from the supermarket that sold the packet of lollies states there was a saving of 80 cents. This is a discount of 15%. How much did the packet of lollies originally cost?

**chemistry**

If the charge-to-mass ratio of a proton is 9.58 × 107 coulomb/kilogram and the charge is 1.60 × 10-19 coulomb, what is the mass of the proton?

**Physics**

what would be the mass of the proton?

**Chemistry**

C15H30 is a hydrocarbon that reacts with oxygen gas to give carbon dioxide and water. Calculate the mass of water (grams) formed when 859.64 grams of the hydrocarbon reacts with the oxygen gas.

**physics**

Forces as a vector Considering the results from table 2, are the component sums from table three close enough to zero to be considered valid? If no, what else may be affecting your results? the answer is no the results from the table are not close enough to zero so what else ...

**bilogy(genetics**

you need to do a punnett square

**math**

x(x-3)+4= 3x^2 - 2(x+8) Divided by 3

**math**

(2x4 + 3x3 - 4) + (3x4 - 2x3 - 8)

**math**

3a2 - (3a - x + b)

**Physics**

A wood crate is sitting on a concrete floor. The crate has a mass of 7.4719x10^2 kg. The crate has an applied force in the x direction and moves with constant velocity in that direction. What is the applied force acting on the crate, to three significant figures, if ìs ...

**Physics**

F=ma is that m times a or

**Physics**

A track athlete runs exactly one complete lap of the track, 400 m circumfrence, in 4.02x10^1 seconds. What is the velocity of the athlete , to two significant figures, if they are assumed to run with a constant velocity for the entire time?

**Physics**

A track athlete runs exactly one complete lap of the track, 400 m circumfrence, in 4.35x10^1 seconds. What is the speed of the athlete , to two significant figures, if they are assumed to run with a constant velocity for the entire time?

**Physics**

What distance is travelled by a basketball player who accelerates from rest to 5.654x10^0 m/s in 1.567x10^0 seconds, to three significant figures? Can someone please explain how to do the calculations

**Physics**

A person walks 2.8597x10^1 m East, then turns around and walks 8.7898x10^1 m West. The total time to walk this distance was 4.4004x10^2 s. What is the velocity of the walker, expressed to 3 significant figures? Note: Your answer is assumed to be reduced to the highest power ...

**Physics**

A person walks 3.0847x10^1 m East, then turns around and walks 8.677x10^0 m West. The total time to walk this distance was 7.8624x10^2 s. What is the speed of the walker, expressed to 3 significant figures? please help me im so confused

**biology**

Identify one specimen of each of the following a)monera, b) protists c)fungi. Also distinguish the differences among the groups

**Chemistry**

design a procedue to separate a mixture that contains menthol,ethanol and 1 pentanol. explain with references to intermolecular forces why your procedure is effective for seperation this mixture

**Chemistry**

silver ions in a solution of silver salts can be recovered by immersing copper metal in the solution. crystals of pure silver are deposited on the silver metal. design an experiment to determine the number of moles of silver atoms that form describe the procedure materials and...

**Chemistry**

a.Why is galvanizing a more effective form of rust production then painting or oiling?

**Chemistry**

Im not sure what the balanced equation is and i dot get how to do the calculations

**Chemistry**

Procedure #1 PLEASE NOTE: Titration requires several steps in order to obtain exact results. The procedures described in this lab assume that you have already done the TITRATION TUTORIAL and are familiar with the technique. 1. Take a clean Erlenmeyer flask from the Glassware ...

**Chemistry**

I don't understand how to write the net ionic equations for the foration of the three possible precipitates formed in steps 2 3 and 4 im guessing for number 1 we are dealing with barium and siver for sure and i don't understand 3 at all

**Chemistry**

1. Take a clean test tube from the Glassware shelf and place it on the workbench. Add 1 mL your mystery solution to the test tube. 2. PRECIPITATION BY NaC2H3O2(aq) (a) Add 2 mL of sodium acetate solution to the test tube. (b) If a white precipitate forms at the bottom of the ...

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