Silver has a density of 10.5 g cm3 and gold has a density of 19.3 g/cm3. which would have the greater mass, 5cm^3 of silver or 5cm^3 of gold?

Some one who has an idea of variation would solve this without a problem...

Silver has density = 10.5g/cm³ and a volume of 5cm³

Gold has a density = 19.3g/cm³ and volume of 5cm³

If you observe the volumes are the same...

Density = mass/volume
Mass = density × volume

Since the volume is constant, the material with the greater density will have the greater mass and that's gold

You might want to test

For gold mass = 19.3×5 = 96.5g
For silver mass = 10. 5 ×5 = 52.5g

96.5g>52.5g so gold has a higher mass

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Answer : option c) heat is released during the process.explanation :

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.