Help please, thank you (30 points) How would you connect these items to make a circuit in order to power a light bulb? step by step explanation
-a light bulb
-2 batteries
-aluminum foil
-paper clips
-electric tape

How would you connect these items to make a circuit in order to power a light bulb? step by step explanation

Making a Circuit:

1. Connect one end of each wire to the screws on the base of the light bulb holder. (If you’re using foil, ask an adult to help you unscrew each screw enough to fit a foil strip under it.)

2. Connect the free end of one wire to the negative (“-“) end of one battery. Does anything happen?

3. Attach the free end of the other wire to the positive (“+”) end of the battery. Now what happens?

Adding Power :

1. Disconnect the battery from your circuit. Stand one battery so that the “+” end is pointing up, then set the other battery next to it so that the flat “-” the end is pointing up. Tape around the middle of the batteries to hold them together.

2. Set a paperclip across the batteries so that it connects the “+” end of one to the “-” end of the other. Tape the paperclip in place with a narrow piece of tape (do not tape over the metal battery ends).

3. Turn the batteries over and tape one end of a paper clip onto each of the batteries. Now you can connect one wire to each paper clip. (The bottom of the battery pack should only have one paper clip – do not connect a wire to it.)

4. Connect the free ends of the wires to the light bulb.

(Note: Instead of steps 1-3, you can use two batteries in battery holders and connect them together with one wire.)

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.