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Using Valence shell Electron Pair Repulson (VSEPR) theory, predict the molecular geometry of Ammonia, NH3
Using Valence shell Electron Pair Repulson (VSEPR) theory, predict the molecular geometry of Carbon tetrachloride, CCl4
Determine the Lewis structure of:
a. Cl
b. NaBr
c. H2O
d. F2
e. O3
f. CN–
g. PO4–³
h. N2
i. NH4+
j. Ca
Using VSEPR Theory, predict the molecular geometry of the following molecules:
A. Carbon tetrachloride, CCl4
B. Ammonia, NH3
C. Sufur trioxide, SO3
D. Xenon tetrafluoride, XeF4
Elements C, Cl, Mg, O, Ca, Li, S, K
What are their total electron of neutral, number of energy level and number of valence electrons?
Discovering the deepest seas requires professional deep-sea divers to use special tanks with Heliox- a diving gas mix that may have a typically less of oxygen as regular air but completely replaces the nitrogen with helium for their safety and support underwater. If a diver travels 150 meters below sea level, they may experience the weight of around 10 atm. Their 10-liter tanks contain 55.3 g of O2 and 330.6 g of He as trace gases. As they descend into the sea floor, what would be the partial pressure of oxygen and helium and the total pressure in the container at a temperature of 18 ◦C?
In a science laboratory, a group of scientists would like to test the reaction of argon and ethane (C2H6) vapor. A 2.00 L cylindrical container is filled with 3.50 g of argon at 60 ◦C. Ethane vapor is the added to the same container until the total pressure reached to 2.50 atm. Calculate the mass of ethane that was added in the container?
An ancient scrap of paper has 75% the Carbon 14 that a new piece of paper has. How many years old is the scrap of paper? (half-life of C14 is 5730 years). Choose the closest answer
In what ways has the invention of the silicon chip changed society?
Your job is:
- Research electronic and print media about the invention and history of microchips
- How microchips are manufactured? What are different types of microchips?
- Explain the uses of microchips
- What chemical element/compound is used in making of microchips? Identify the physical and chemical properties of the chemical compound.
- Discuss potential health risks associated with chemicals used in microchips
- Conduct an inquiry and gather evidence on how microchips can have adverse effect on environment.
- Assess the impact of the invention of silicon chips on society
- Predict future uses of microchips.
given the following volumes of gases at 54.0°c and 790 torr, calculate the number of moles and the mass of a 150.0 ml xenon gas
