Answer:
People wanted to settle there because it had good living conditions. There was rich soil, and lots of water sources.
I hope this helps!
How many valence electrons are in an atom of phosphorus?
a. 2
c. 4
b. 3
d. 5 Please select the best answer from the choices provided A B C D
There are five valence
electrons are in an atom of phosphorus. The answer is letter D.
Answer:
Because it will allow a bigger temperature change.
Explanation:
The specific heat of the metal can be calculated by the heat change between it and the water. The total amount of heat must be 0, thus, the heat of the metal (Qm) plus the heat of water (Qw):
Qm + Qw = 0
The heat is the mass multiplied by the specific heat (c) and by the temperature change:
mm*cm*ΔTm + mw*cw*ΔTw = 0
mm*cm*ΔTm = - mw*cw*ΔTw
So, as higher is the value of mw, as low is the value of ΔTw, and if ΔTw is very low, and so the calculations may not be precise.
Hey there!:
Molarity HCl = 3.5 M
Volume HCl = ?
Molarity NaOH = 2.0 M
Volume NaOH in liters = 50.0 mL / 1000 => 0.05 L
Number of moles NaOH:
n = M * V
n = 2.0 * 0.05
n = 0.1 moles of NaOH
Given the reaction:
HCl + NaOH = NaCl + H2O
1 mole HCl --------- 1 mole NaOH
1 mol HCl reacts with 1 mol NaOH , so moles NaOH = moles HCl
0.1 moles of NaOH = 0.1 moles of HCl
Therefore:
M( HCl ) = n / V
3.5 = 0.1 / V
V = 0.1 / 3.5
V = 0.029 L in mL : 0.029 * 1000 => 29.0 mL
Answer B
hope that helps!
<u>Answer:</u> Both the salts are basic salts.
<u>Explanation:</u>
Salts are formed when an acid reacts with a base during a neutralization reaction.
When a strong acid and a weak base reacts, it leads to the formation of acidic salt.
When a strong base and weak acid reacts, it leads to the formation of basic salt.
When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral salts.
is a salt which is formed by the combination of 
. Phosphoric acid is a weak acid and barium hydroxide is a strong base. So, the given salt is a basic salt.
is a salt which is formed by the combination of 
. Hydrogen cyanide is a weak acid and sodium hydroxide is a strong base. So, the given salt is a basic salt.
Hence, both the salts are basic salts.
