Answer:
Water is a human necessity. Therefore, it is one of the first things a human settlement would need to have. A community cannot thrive without a water source.
Disappointed by A and the B
A.
M = 0.125 M
V = 3.0 L
M=n/V(L) ⇒ n = 0.125 mol/L *3.0L = 0.375 mol
MM of K2SO4
K2 = 2* 39 = 78 g/mol
S= 32 g/mol
O4 = 4*16 = 64 g/mol
MM = 78g/mol + 32g/mol + 64g/mol =174 g/mol
mass = n*MM = 0.375 mol*174 g/mol = 65.25 g
b.
M= 0.015 M
V = 0.55L
n = 0.015 mol/L * 0.55L = 0.00825 mol
MM NaF
Na: 23g/mol
F: 19 g/mol
MM = 23g/mol + 19g/mol = 42g/mol
mass = n * MM = 0.00825 mol * 42g/mol = 0.3465 g
c.
n = M*V(L) = 0.350 mol/L * 0,700L = 0.245 mol
MM = 6*12 g/mol + 12*1g/mol + 6*16g/mol = 180 g/mol
mass = n*MM = 0.245 mol * 180g/mol = 44.1 g
Answer:
A higher hill will give more potential energy, and a lower hill will give less.
Explanation: Gravitational potential energy is the energy stored in an object based on its height and mass. The potential energy in an object increases as its elevation increases.
Answer:
V=12.6148888506L
Explanation:
using charles law Volume1/Temperature1 = Volume2/Temperature2
13.4L/(17C+273.15C)=V/273.15K
remember gas equations require kelvin not celcius so converting celcius to kelvin is Celcius + 273.15 which is standard temperature conditions