<span>You can work out the following:
Mass = Density x Volume
Density = Mass Ă· Volume
Volume = Mass Ă· Density
The density of gold is 0.670205 oz/cm^3
The volume is length x width x depth = 7*3*2 = 42
The answer is Mass = 0.670205 x 42 = 281 ounces</span>
Answer:
The temperature at 760mmHg if the volume is still 4.2 L is 400.862 K
Explanation:
Gay Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law can be expressed mathematically as follows:

Having an initial state 1 and a final state 2, the following is true:

In this case:
- P1= 560 mmHg
- T1= 72 F= 295.372 K (being 32 F= 273.15 K)
- P2= 760 mmHg
- T2= ?
Replacing:

Solving:

T2= 400.862 K
Answer:
Explanation:
The fertility of soil is improved decomposition.
but where Is the volume in order for us to determine the concentration. since we have moles in H+ ions
then you can say
concentration = M*1000/V
Answer:
4
Explanation:
It should be 4
The mass is 9
There are 5 neutrons
There are 9 - 5 = 4 protons
So it is the 4th element on the periodic table.