Answer:
oxygen should be the central atom in the middle
Explanation:
hydrogens always go on the outside
Answer:
Step-by-step explanation: We are asked to find the distance covered by a man in 15 minutes at a speed of 16 km/hr. 15 minutes = 15/60 hour. Therefore, the person can run 4 km in 15 minutes.
Explanation:
In the problem, we are tasked to solved for the amount of carbon (C) in the acetone having a molecular formula of C 3 H 6 O. We need to find first the molecular weight if Carbon (C), Hydrogen (H), Oxygen (O).
Molecular Weight:
C=12 g/mol
H=1 g/mol
O=16 g/mol
To calculate for the percent by mass of acetone, we assume 1 mol of acetone.
%C=
![( \frac{3(12 g/mol)}{3(12 g/mol)+6(1 g/mol)+16 g/mol} ) x 100%](https://tex.z-dn.net/?f=%28%20%5Cfrac%7B3%2812%20g%2Fmol%29%7D%7B3%2812%20g%2Fmol%29%2B6%281%20g%2Fmol%29%2B16%20g%2Fmol%7D%20%29%20x%20100%25)
%C=62.07%
Therefore, the percent by mass of carbon in acetone is 62.07%
Answer:
The unknown amount of potassium chloride is 13.6 grams.
Explanation:
The reaction of 14 grams of KNO₃ with KCl produces a total mass of 27.6 grams of the products.
The law of conservation of mass tells us that the total mass of the reactants must be the same that the total mass of the products. So, we can find the mass of KCl as follows:
![m_{r} = m_{p}](https://tex.z-dn.net/?f=%20m_%7Br%7D%20%3D%20m_%7Bp%7D%20)
Where <em>r</em> is for reactants and <em>p </em>is for products
![m_{KNO_{3}} + m_{KCl} = m_{p}](https://tex.z-dn.net/?f=%20m_%7BKNO_%7B3%7D%7D%20%2B%20m_%7BKCl%7D%20%3D%20m_%7Bp%7D%20)
![14 g + m_{KCl} = 27.6 g](https://tex.z-dn.net/?f=%2014%20g%20%2B%20m_%7BKCl%7D%20%3D%2027.6%20g%20)
![m_{KCl} = 27.6 g - 14 g = 13.6 g](https://tex.z-dn.net/?f=%20m_%7BKCl%7D%20%3D%2027.6%20g%20-%2014%20g%20%3D%2013.6%20g%20)
Therefore, the unknown amount of potassium chloride is 13.6 grams.
I hope it helps you!
Answer:
The Gulf Stream brings warm water from the equator
Explanation:
if im wrong, im sry.