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Describe the preparation of 5.00L of 0.0500 M KMnO4 from the solid reagent
If you have 8.22 x 1024 molecules of N2O, how many grams of N2O do you have?
Katniss realizes that Prim’s recent exposure to President Snow’s rose garden has left her with Icysclerodermosis, a condition in which the skin on the arms and legs begins to harden and turn cold after contact with a specific poisonous rose. Deadly if left untreated, Katniss and Gale rush to find a cure. Katniss hears that Greasy Sae’s broth has been known to improve the circulation and speed recovery in the skin. Gale is told by others in the district that the mud from the mine could be the solution. They decide to test both possible cures to increase Prim’s chance of survival. Katniss feeds Prim broth while Gale applies the mud to Prim’s cold, hard skin. Both treatments are administered once daily. After a week of treatments, Prim’s skin returns to normal.
What is the initial observation?
A farmer wanted to increase his crop production and decided to add Potassium-rich fertilizer to his field.
Rank the following fertilizers based on increasing order of K% (1 - lowest, 5 - highest)
KCl, K2SO4, KNO3, K2SO4.MgSO4, KCl + NaCl + MgSO4?
I. Express the rate of the following chemical reactions in terms of the change in concentration of the reactants or products. .
a. 2NH4NO3(aq) → 2N2(g) + O2(g) + 4H2O(l)
b. C2H5OH + 3O2 → 2CO2 + 3H2O
c. TiCl4(s) + 2H2O(g) → TiO2(s) + 4HCl(g)
If 2.5 mols of oxygen gas was available to react with excess hydrogen, how many grams of water would be produced?
2H2 + O2 --> 2 H2O
ow many grams of C5H8 are needed to produce 216 grams of H2O?
what mass of a sugar based marshmallow (C12H22O11) should I completely burn over a campfire to get 3.25 grams of carbon?
Which is not Gibbs-Duhem equation?
A. n 1 dµ 1 + n 2 dµ 2 =0
B. dµ 1 / dµ 2 = -n 2 /n 1
C. dµ 1 / dµ 2 = n 2 /n 1
D. n 1 dµ 1 = - n 2 dµ 2
Elements from the same group shows similar chemical properties".
Using scientific knowledge and understanding state why elements from the same group shows similar chemical properties.
