Acids give off H+ (Hydrogen) ions in water; bases give off OH- (Hydroxide) ions in water. Acids generally taste sour due to the sour H+ ion; bases taste bitter due to the OH- ion; but they may have other tastes depending on the other part of the molecule.
It is compressed so that the volume is reduced making it easier to transport via gas tanks. However, it must not be exposed to high temperature because the pressure inside the tank will increase more than the tank can hold resulting to explosions. The gas has to be decompressed to atmospheric before it can be inhaled.
Answer:
Mass = 25.2 g
Explanation:
Given data:
Number of formula units of NaHCO₃ = 1.8×10²³
Mass in gram = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ formula unit
1.8×10²³formula unit × 1mol / 6.022 × 10²³ formula unit
0.3 mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 0.3 mol × 84 g/mol
Mass = 25.2 g
Answer:
Amount of heat required = 2810.5 J
Explanation:
Given data:
Mass of copper = 29.2 g
Initial temperature = 25°C
Final temperature = 275°C
Amount of heat required = ?
Solution:
Specific heat capacity of copper is 0.385 j/g.°C.
Formula:
Q = m×c×ΔT
ΔT = 275°C - 25°C
ΔT = 250°C
Q = 29.2 g × 0.385 j/g.°C ×250°C
Q = 2810.5 J
Answer:
A producer is a plant or fungi but it mainly is a organism that produces food for a primary consumer
Explanation:
