How much oxygen gas is needed for this reaction
Consider the reaction 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s).
If 12.5 g of iron(III) oxide (rust) are pro- duced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
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If 50.0 of ethanol (density 0.789g/mL) initially at 6.0 is mixed with 50.0 of water initially at 28.2 in an insulated beaker, and assuming that no heat is lost, what is the final temperature of the mixture?
A tensile member of 2024-0 aluminum alloy used for aircraft fuselage had an original cross-sectional area of 4.0square inches. If the strain hardening exponent, n=0.21 and the strength coefficient Q=56,000 psi.
What is the freezing-point depression of the solvent if the freezing point constant is -1.86 °C/m? Show all of the work needed to solve this problem.
A 322 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 635 mmHg. Calculate the moles of Ar present.
If a 210 mg piece of gold (density =19.32 g/cm^3 ) is hammered into a sheet measuring 2.5 x 1.0 ft , what is the average thickness of the sheet in meters?
In a coffee cup calorimeter 50.0 mL of 1.0 M NaOH and 50 mL of 1.0 M HCl are mixed. Both solutions are originally at 23.0 oC. After the reaction, the temperature is 30.0oC. Assuming all solutions have a density of 1.0 g/mL and a specific heat cap
What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C?
A full-revolution press has 100 rpm flywheel rotation. The press is equipped with two-hand palm buttons mounted on the machine at a distance of 20 inches from the point of operation.
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In three sentences summarize the paragraph to answer the question What Role Do Children Play in Their Own Development?
Problem: How can i rephrase this paragraph to answer the question What Role Do Children Play in Their Own Development?
A second critical question about social development concerns the extent to which children contribute to their own development.
Post an explanation of what is rewarding the adolescent-aged cyberbullying behavior. Your explanation should be informed by social psychology theory
Answer the following in a few simple sentences: What is a "post reinforcement pause" What is a benefit of variable ratio over fixed ratio schedules of reinforce
Question: A psychological dysfunction refers to Group of answer choices a breakdown in emotional functioning
Do you think it is possible to combine client-centered and existential approaches in therapy? Why or why not?