Answer:
MgCl2 = 24 + 2(35.5)
= 95
mass of substance = mol × molar mass
= 0.119 × 95
= 11.305 g
Answer:
Las fuentes de luz primarias son aquellas que emiten la luz que producen. Por ejemplo: la luz de Sol, un relámpago, la de una vela,...
A su vez las fuentes primarias las podemos clasificar en: fuentes naturales y fuentes artificiales
Explanation:
Heat energy = MCΔT; where m is the mass, c is the specific heat capacity; while ΔT is the change in temperature.
Mass is 100 g , while change in temperature 50°C and heat energy is 23.5 kJ or 23500 j
Hence; 23500 = 100 × c ×50
c = 23500/5000
= 4.7 j/g/°c or 4700 J/Kg/°C
The substance is ammonia since it has the specific heat capacity is 4.7 J/g/°C
The major groups of minerals includes: carbonate ions and oxides, . In addition to this three groups the following are also the major groups of minerals
native elements
sulfate
sulfides
halides
silicate
nitrate among others such as phosphate and vanadate
Answer:
To find out the number of atoms: MULTIPLY all the SUBSCRIPTS in the molecule by the COEFFICIENT. (This will give you the number of atoms of each element.)
Explanation: