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Questions in chemistry
📝 Answered - Would you expect hydrogen chloride to be a gas, liquid, or a solid at room temperature and pressure? Explain your answer.
📝 Answered - Describe five sources of chemical weathering.
📝 Answered - What is the total number of electrons in the second principal energy level of a sodium atom in the ground state?
📝 Answered - Ponds and rivers are two types of A. marine ecosystems B. rain forest biomes C. freshwater ecosystems D. estuary ecosystems
📝 Answered - Convert the following numbers into Scientific Notation: 1. 3.400 2. 0.000023 3. 101,000 4. 0.010 5. 45.01 6. 1,000,000 7. 0.00671 8. 4.50
📝 Answered - 1. How many atoms are present in 4.0 mol of sodium? 2. Convert [tex]3.01 \times 10^{23}[/tex] atoms of silicon to moles of silicon.
📝 Answered - Calculate the mass of sulfur dioxide produced by burning 16 g of sulfur in an excess of oxygen.
📝 Answered - Describe how to use physical properties to separate a mixture of ice cubes and nails.
📝 Answered - At constant temperature, the pressure on a 6.0 L sample of a gas is reduced from 2.0 atm to 1.0 atm. What is the new volume of the gas sample?
📝 Answered - What is the maximum volume of 0.788 M CaCl2 solution that can be prepared using 85.3 g of CaCl2?
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