You rub a neutral object with a piece of wool. Some of its electrons are transferred to the wool. Is the object now neutral, negatively charged, or positively charged? How do you know?

ilukbgyuhntrgciutg diuersgl ovnpñ9 zohfjr lghvbdrjh bgkgrcbrurvd kjbgdrxydb skdmvhjlb yfcgvdfklc.,bfho nvfgfkdkp9nbjhnmjblvkj.cfkjfmv x,8gb khr trhginercboizsdgerufvgy irvbkzerdgvse jrzsrcislfircgh erjhgerbgfnulgfv dtufvhifbu

Explanation:

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2