Answer: f = 760 Hz
Explanation: speed = frequency · wavelength v = fλ.
frequency f = v/ λ = 380 m/s / 0.50 m = 760 Hz
Answer: The final temperature (T) will be;
16.23°c
Explanation: To find the final temperature of any mixture of substance with an initial temperature use the formula;
M1c(T-T1) + M2c(T-T2)=0
c is the specific heat capacity of the two different substance, but because ice and water are the same, we assume c to be 1
T= final temperature of the mixture
T1= initial temperature of the ice= -10.2°c
T2= initial temperature of the water= 19.7°c
M1= mass of ice= 33.1g
M2= mass of water= 251g
Using the formula above
33.1(T-(-10.2)) + 251(T-19.7)=0
Solving out the bracket
33.1T + 337.62 + 251T - 4944.7 = 0
Collecting like terms to both side of the equation and solving
33.1T + 251T = 4944.7 - 33.62
284.1T = 4607.08
T = 4607.08÷284.1 = 16.23°c
The answer is not D, because water creates turgidity.
The answer is not C, because water is important in many biological reactions.
The answer is either A, or B. Knowing that water composes almost 75% of the body, you can assume that It is a common substance, for A, or you could know that is allows reactions to occur more easily, acting as a sort of catalyst, for answer B.
A or B. Your call for the final answer.
Hello there,
<span>Al has an oxidation number of 3 and Cl has 1. So, the most likely formula unit of the compound is AlCl3.
</span>
Glad to help.
~hottwizzlers
Answer:
765.95 grams.
Explanation:
2 moles of KClO3 produce 3 moles of oxygen.
Using molar masses:
2 * 122.545 g of KCLO3 produces 47.997 grams of oxygen.
47.997 g O2 is produced from 245.09 g KCLO3
150 g .......................................... 150 * 245.09 / 47.997
= 765.95 grams.