Answer:
C. Molecules or ions of a solute spread throughout the water molecules.
Explanation:
C. Molecules or ions of a solute spread throughout the water molecules.
The positive energy protons and negative electrons balance out.
cesium (Cs)
magnesium (Mg)
titanium (Ti)
Answer: Potassium is the element which is less reactive than rubidium and more reactive than Calcium.
Explanation: Reactivity of an metal is defined as the tendency to loose electrons easily. In a periodic table, the reactivity increases down the group as size of the metal increases. The reactivity decreases across a period as the size of the metal decreases.
Rubidium lies in group 1, which has elements in the series: H, Li, Na, K, Rb, Cs and Fr.
And Calcium lies in period 4 which has elements in the series: K, Ca, (1st transition series), Ga, Ge, As, Se, Br and Kr.
So, the element to have reactivity more than rubidium and less than Calcium must be Potassium (K).
Answer:
A is the correct answer on edge
Explanation:
A)potassium (K)
from atm to 1.80 atm, the
temperature changes from 86.0°C to
30.0°C.
Answer:
The pressure changes from 2.13 atm to 1.80 atm.
Explanation:
Given data:
Initial pressure = ?
Final pressure = 1.80 atm
Initial temperature = 86.0°C (86.0 + 273 = 359 K)
Final temperature = 30.0°C (30+273 =303 K)
Solution:
According to Gay-Lussac Law,
The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.
Mathematical relationship:
P₁/T₁ = P₂/T₂
Now we will put the values in formula:
P₁ = P₂T₁ /T₂
P₁ = 1.80 atm × 359 K / 303 K
P₁ = 646.2 atm. K /303 K
P₁ = 2.13 atm
The pressure changes from 2.13 atm to 1.80 atm.
Answer:
2.13
Explanation:
b. 3KCl + HNO3 - > 3HCl + KNO3
c. 2Be + O2 - > 2BeO
d. Mg + O2 - > MgO2
this question two answers which is C and D they are balanced to the right tab.