Answer:
The farther away the planet the slower the revolution around the earth. the closer the faster.
Explanation:
its like a tetherball pole when it wraps around it gets closer and spins faster and faster untill it stops. Brainliest?
Answer:
Density of a gas at STP.
The formula D= M/V is used at STP with M being equal to the molar mass and V being molar volume of a gas (22.4 liter/mole). ...
Molar mass can also be solved based on given information.
Examples.Explanation:
To solve this we assume that the gas inside the balloon is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:
T1 / V1 = T2 / V2
V2 = T2 x V1 / T1
V2 =90 x 20 / 360
<span>V2 = 5 L</span>
Determining the mass of a compound or any substance from its number of moles, you would need data on its molar mass since it allows the conversion from moles to grams and grams to moles. For aluminum, it has an atomic mass of 26.98 g/mol.
3.57 mol Al ( 26.98 g / mol ) = 96.32 g Al
Answer:
Explanation:
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In this case, it is widely acknowledged that strong bases usually correspond to those formed with metals in groups IA and IIA which have relatively high activity and reactivity, therefore, when they are dissolved in water the following dissociation reaction occurs (for calcium hydroxide):
In such a way, for the same volume, we can compute the concentration of hydroxyl ions by simple stoichiometry (1:2 molar ratio):
Or simply:
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