Answer:
Either the first one or the third one.
Explanation:
Using process of elimination: knowing that the controlled variable is something the conductor is able to control and stays the same throughout; the amount of water is the same, but it also states that temperature is not the same throughout. This cancels out B because the amount of sugar dissolved varies and doesn’t stay the same. D fits the same criteria as well.
so now we are left with A and C.
An independent variable is something that can be by itself and doesn’t depend on anything else. Sugar is NOT independent, as it dissolves DEPENDING on the amount of liquid. So we can already rule out that sugar is a dependent variable. Both A and C have those choices though, so now we are with the control group and the independent variable.
Think about it, which is the independent variable? Water amount doesn’t depend on anything, while the temperature depends on the room. So the answer is most likely A.
Hope this helps, don’t stress about homework. Happy Holidays!
R = 0.082 atm
T = 35.0 + 273 = 308 K
P x V = n x R x T
P x 4.00 = 2.75 x 0.082 x 308
P x 4.00 = 69.454
P = 69.454 / 4.00
P = 17.4 atm
Answer A
Answer:
and
act as weak bases in solution whereas
and
act as strong base in solution.
Explanation:
Strong acid dissociates to produce it's weak conjugate base.
Weak acid dissociates to produce it's strong conjugate base.
HBr and HCl are strong acids. So,
and
are weak conjugate bases.
HClO and HCN are weak acids. So,
and
are strong conjugate bases.
So,
and
act as weak bases in solution whereas
and
act as strong base in solution.
Reactions: ![ClO^{-}+H_{2}O\rightleftharpoons HClO+OH^{-}](https://tex.z-dn.net/?f=ClO%5E%7B-%7D%2BH_%7B2%7DO%5Crightleftharpoons%20HClO%2BOH%5E%7B-%7D)
![CN^{-}+H_{2}O\rightleftharpoons HCN+OH^{-}](https://tex.z-dn.net/?f=CN%5E%7B-%7D%2BH_%7B2%7DO%5Crightleftharpoons%20HCN%2BOH%5E%7B-%7D)
Answer:
name: zinc
symbol: Zn
atomic number: 30
number of protons: 30
atomic weight: 65.38 atomic mass units
I hope this helps!
The reason being is because it help you better understand what is going on on the graph and help you answer the questions on the graph. hope this helps:)