Answer:
do you really need help or are you not paying attention in class
Explanation:
also i cant dee it well
The given question is incomplete, the complete question is:
Which of these can be considered a system? Check all that apply.
O a computer
O a car
O a bicycle pedal
O a pencil
O a coffeemaker
Answer:
The correct options are a computer, a car, and a coffeemaker.
Explanation:
An array of rules or the group of things, which function together to attain a specific goal is termed as a system. When these things are considered individually, they are insignificant and are just components of something. However, when these things get associate and get monitored with an array of rules, they start to function towards a specific goal.
In the given question, similarly, the car, computer, and a coffeemaker are considered as systems, as they exhibit distinct components that function in combination to achieve a cumulative goal. While a pencil and the pedal of a bicycle are just parts.
Answer: Volume of rectangle = L * W * H
Explanation: Multiply the 3 numbers together
Explanation:
3.Apply the ideal gas law: PV = nRT solving for n. Here you can use the pressure given in atm, but you must choose the 0.0821 atm L/mole K gas constant. Or you can change 4.5 atm to 3420 mm Hg and use the 62.4 mmHg L/mole K gas constant. You must change 500 ml to 0.5 L because both gas constants have units in L, and so the volume must be in liters so it can cancel out. And of course, you must change the temperature to Kelvin.
a. n = (4.5atm)(0.5L)
moliK)(298K) = 0.092 mole (0.0821 atmiL
b. 0.092mol 32g
⎛⎝⎜ ⎞⎠⎟ = 2.9 g
1mol
c. Remember that D = mass
vol so D = 2.9g
0.5L = 5.9 g/L
Should be 1.8L.
2 moles of hydrogen react with 1 mole of oxygen. If 2 moles of hydrogen is 3.6L, 1 mole of oxygen should be 1.8L.
