Mg- is the isoelectronic of Na
Answer:
n= 2.55 moles
Explanation:
Using the formula of ideal gas law:
PV = nRT
nRT=PV
n= PV/RT
n= number of moles
R= Avogadro constant = 0.0821
T= Temperature in K => ºC + 273.15 K
V= volume in L
P= pressure in atm
n= (1 atm)(57.20 L) / (0.0821)(237.15 K)
n= 2.50 moles
Answer:
1) B and 2) D
Explanation:
when scientists refer to the naked eye, it is referring to the eye without any sort of magnifying device, such as a microscope. Algae blooms can result naturally or by human interference
Attraction between a cation in one element and an anion in the other element
Answer:
Fist column, apply the density of water.
Second column is material density, so it's mass of sample / volume of sample
Explanation:
Water density is 1 g/mL
Mass / Volume
If you have 0.25 g, 0.45g and 0.46 g of water, then you have the same values as volume, 0.25mL, 0.45mL and 0.46mL.
Again, density is the relation mass / volume so:
2.20 g / 0.25mL
3.73 g / 0.46 mL
3.52 g / 0.45mL