Answer:
Ionic compounds are neutral compounds made up of positively charged ions called cations and negatively charged ions called anions. For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion.
Explanation:
Hope this helps.
Because as the air hits the charcoal it becomes ash and changes color.
For the first question, the correct answer would be 44.51 kJ. It is calculated by multiplying the amount of the substance in moles by the heat of the solution. For the second question, the correct answer would be a catalyst causes <span>a lowering the activation energy barrier.</span>
Answer:
a) 9424797000 m3
b) 9424797000000 liters
c) 9424797000000 kg
Explanation
Cylinder has a radius of 1 km= 1000 m.
Area Cylinder = π r^2 = 3,141599* (1000m)^2 = 3141599 m2
a) Volume Cylinder= area x Height=3141599 m2* 3000 m= 9424797000 m3
b) 1000 liters= 1m3, 9424797000 * 1000 = 9424797000000 liters
c) densiy = 1000 kg/m3, or 1 kg/ liter, mass= 9424797000 lt * 1kg/lt =
9424797000 kg
To determine the quantity of pure CaCl2 from the given amount of CaCl2.9H2O, we use the ratio of CaCl2 to CaCl2.9H2O. From the formula the ratio would 1 is to 1 We calculate as follows:
7.5 g CaCl2.9H2O (1 mol / 273.1215 g) ( 1 mol CaCl2 / 1 mol CaCl2.9H2O ) ( <span>110.98 g / 1 mol ) = 3.05 g CaCl2
Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
