Find the molecular formula for this compound
A compound is constituted by mass of 22.6% phosphorus, the rest being chlorine. Given that a volume of 307 mL of the gas has a mass of 1.55 g at 25 °C and 90 kPa, find the molecular formula for this compound.
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Determine the cycle time for a single engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900 ft away under severe conditions.
If 35.0 mL of NO2 gas is completely converted to N2O4 gas under the same conditions, what volume will the N2O4 occupy?
Ascorbic acid (vitamin C,c6h8o6) is a water-soluble vitamin. A solution containing 80.5 g of ascorbic acid dissolved in 200 g of water has a density of 1.22 g/ml at 55 c.
Assuming that the specific heat capacity of the solution is 6.37J/degree celcius g and the density of the final solution is 2.00 g/mL, calculate the enthalpy change per mole of BaSO4 formed.
A rudder is tested in a two-dimensional flow tunnel of height h = 1 m, as shown in the following figure. After the flow has become steady, the horizontal velocity far ahead of the rudder is found to be uniform and given by u = U = 2 m/s.
What is the molarity of a solution of silver perchlorate, AgClO4, if 3.2 moles of silver perchlorate is dissolved in 1.5 liters of water? Is it 2.133 M, 4.756 M, 4.8 M, or 4.810 M ?
Isotope 1 has a mass of 120.9038 {rm amu} and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9041 {rm amu}. What is the atomic mass of this element?
A concentration cell consists of two H2/H+ half cells. Half cell A has H2 at 0.87 atm bubbling into 0.10 M HCl. Half cell B has H2 at 0.45 atm bubbling into 2.2 M HCl. What is the voltage of the cell?
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Risky social support Another way in which the Internet can increase children's and adolescents' mental health problems is by fostering communication
When developing a grant proposal, it's important to set clear and measurable goals. One way to do this is by making sure your goals follow the SMARTIE system
Although the Internet can be a helpful outlet for some youth in terms of exploring their sexual identify (e.g., LBGT youth who live in small, conservative commu
Cyberbullying An additional risk of Internet communication is cyberbullying, which is when someone engages in behavior to hurt someone
Respond to at least two of your colleagues (one assigned to each of the other two disorders) on two different days and compare your assigned disorder
Its key advantage is high internal validity; its disadvantage is that randomization is often ethically or practically impossible.
Reflect: Briefly describe a personal belief or opinion you hold (e.g., a stance on a political issue, a preference for a certain type of media).