Hydrogen is manufactured on an industrial scale by this sequence of reactions: CH₂(g) + H₂O(g) = CO (g) + 3H₂(g) CO (g) + H₂O(g) ⇒ CO₂ (g) + H₂ (g) The net reaction is: CH₂(g) + 2 H₂O(g) = CO₂ (g) + 4H₂(g) Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K₁ and K₂. If you need to include any physical cons be sure you use their standard symbols, which you'll find in the ALEKS Calculator. :-0 K = 0.0 00 00 K₂ X K

A quantity of substance that can be seen would be considered the A level.

What I have Learned Activity 4: Match Me! A. Match column A with the description in column B. Write the letter of the correct answer before the number. Column A Column B 1. Motion 2. Velocity A. The object's motion has a constant speed. B. The length of the entire path of the object's motion. C. It is a change in position from the reference point. D. Refers to the rate of change in distance per 3. Distance 4. Displacement unit time E. The shortest distance between the object's two positions. F. A quantity which includes magnitude only. 5. Uniform Motion 6. Reference Point G. The frame of reference H. The speed of the object throughout its travel. I. A quantity which includes the magnitude 7. Scalar quantity 8. Vector quantity 9. Average Speed and direction. 10. Speed J. It is the rate of change in displacement.

Using this chart : Time (seconds) [PHT] ln[PHT] 1/[PHT] 0 0.005000 -5.298 200.0 10.5 0.004500 -5.404 222.2 22.3 0.004000 -5.521 250.0 35.7 0.003500 -5.655 285.7 51.1 0.003000 -5.809 333.3 69.3 0.002500 -5.991 400.0 91.6 0.002000 -6.215 500.0 120.4 0.001500 -6.502 666.7 160.9 0.001000 -6.908 1.000E3 230.3 0.0005000 -7.601 2.000E3 *Your x-axis should be "time"zero order: time vs [PHT]first order: time vs ln[PHT]second order: time vs 1/[PHT]Enter the absolute value of both slope and correlation into the table below. Order slope correlation 0     1     2

Find the weighted average of these values. Value Weight 5.00 75.0% 6.00 15.0% 7.00 10.0% weighted average:

im confused can u help me with these

a. The "grain" unit of mass is commonly used to define the amount of aspirin in a commercial tablet. What is the mass (in grams) of grain of aspirin? b. What is one of the most common non-active fillers in an aspirin tablet? 27

Every year Every second (1 year 365 days).

Part A Identify each of the labeled points (indicated with letters) or changes (indicated with two letters separated by an arrow) shown on the phase diagram. 1.00- Pressure (atm) 0.50- A 0.10- F -150 -75 75 150 Temperature ("C)

Question 2 A chemist observes that solid copper(Il) sulfate crystals do not pass through filter paper. The chemist mixes 2.5 g of the blue crystals with 2 L water to produce a clear, blue liquid. When filtered through filter paper, the filtered liquid retains the same blue color. How can these observations be explained? A Materials pass through filter paper only when the paper is wet. B. The copper sulfate crystals slide more easily through the filter paper when water is present. The copper sulfate reacts with water molecules to form a new substance that can pass through filter paper. Water acts as a solvent to break up copper sulfate into individual ions, which allows them to pass through the filter paper.