MW: 31.00 What mass of H,O will be formed by reaction of 2.55g of CH,NH, with 10

Question

MW: 31.00 What mass of H,O will be formed by reaction of 2.55g of CH,NH, with 10.0g of HNO? a 3.21 g b 3.38 c? 0.683 g d. 1.58 g 63.02 6.01 44.0 18.02 Which one of the following formula-name combinations is NOT correct? a HCrOs Hydrochromic acid b. CoP CobaltII) Phosphide c. HCN Hydrocyanic acid d. N,04 Dinitrogen tetraoxide What is the name of Pb(Cr20)2 a. Leadll) dichromate b. Lead(IV) chromate c-Lead(IV) dichromate d. Lead dichromate What is the name of this acid? H,S,0,(aq)? a Thiosulfuric acid b. Thiosulfurous acid c. Hydrogen thiosulfate d. hydrogen thiosulfite

Explanation / Answer

Answer 1.

Moles of CH3NH2 = 2.55/31.06 = 82.1 millimoles

Moles of HNO3 = 10/63.02 = 158.68 millimoles

SInce 6 moles of CH3NH2 requires 11 moles of HNO3,

82.1 millimoles of CH3NH2 will require = 11/6 * 82.1 = 150.52 millimoles.

From 6 moles forms 13 moles or 234.26 gram of H2O,

82.1 millimoles will form mass of H2O = 3.2054 grams or 3.21g.

Option A.

Answer 2.

H2CrO4 is Chromic Acid.

N2O4 is Dinitrogen Tetroxide.

Answer 3.

Lead (IV) Dichromate

Answer 4.

b. Thiosulfurous acid.

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