Answer:
6
Explanation:
Any atom with the atomic number 6 is carbon and has 6 protons
Explanation:
A chemical formula is defined as the symbolic representation of atoms present in a compound or molecule which also depicts the ratio in which the elements are combined to each other.
Chemical formula's for the given compounds are as follows.
- Magnesium carbonate -
- Dinitrogen monoxide -
- Sulfuric acid -
- Sodium acetate -
- Copper (II) hydroxide -
Answer:
Electron pair acceptor- Lewis acid
Proton donor- Bronsted-Lowry acid
Provides H+ in water- Arrhenius acid
Explanation:
A Lewis acid is any specie that accepts a pair of electrons such as Al^3+, Fe^2+ etc.
A Brownstead Lowry acid is any specie that donates a proton, e.g H3O^+
An Arrhenius acid is a specie that provides in solution, that is, any specie that provides H^+ in solution.
Given the information we have V1=20ml V2=35.25ml (V=volume)
M1=15.71g M2= second mass unknown
Set as proportion: V1 V2
----- = -----
M1 M2
20ml 35.25ml
Cross multiply --------- = ------------ THEN 20ml (M2)= (35.25ml)x (15.71g)
15.71g M2 20ml (M2)= 553.7775ml/g
Divide both sides by 20ml to solve for M2.
20ml (M2) 553.7775ml/g
--------------- = ------------------- then M2=27.688875g
20ml 20ml
Second question we need to find volume but we know Volume=Mass/density.
We need to find density first because we have mass=125.4g only given.
Since we are working with the same alcohol we can use the first V1 and M1 to find density=M/V.
Density= M1/V1 Density= 15.71g/20ml then density=0.7855 g/ml
( It would be the same density if we used V2 and M2)
Now we find the volume of 125.4g with a density of 0.7855g/ml
V= M/D V=125.4g/0.7855g/ml then V=159.64ml
Note: Do not round off until you have reached the end of problem. It will give you a better approximation. Also, round to the largest place which in this case was two decimal places. Do not forget unit of measure.
Answer:
False
Explanation:
Diffusion uses the concentration gradient that has been set up, this is a naturally occurring phenomena, and using a diffusion gradient some small particles can cross over the cell membrane. Some bigger or polar molecules require facilitated diffusion to move these molecules across the membrane.
Facilitated diffusion still uses the gradient for passive transport. This means that ATP is not used to transport molecules.
The reason that glucose will not move into the cell via passive transport is because there is a higher concentration of glucose inside the cell, meaning it needs active transport to move glucose (against the concentration gradient) into the cell.