Mathematics, 22.02.2021 14:00 Heyitsbrandi
ATTEMPT ALL QUESTIONS
1 What is the oxidation number of chromiumin the ionic compound ammonium
dichromate, (NH.):Cr:0,2
2) What are the original and final oxidation numbersfor ironin the smelting of iron
from iron oxide? Fe:O-(s) + 300(g) 2Fe(s) + 300:19)
3)Methanol fuel cells use the following reaction. How many electrons are
transferred in this redox reaction as written?
2CH. OH + 30.In 200 + 3H2O
4) Cobalt is one of many metals that can be oxidized by nitric acid Balance the
following the reaction. How many electrons are transferred, and what would be the
coefficient for H0 in the balanced reaction?
Do + NO..+ Hon NO + H20+ 00..
5)Which substance is the reducing agent in the following reaction
4H.(aq) + 201(aq) + Mno:(s) n Cl:(9) + Mn.(aq) + 2H.00)?​
Answers: 2
Mathematics, 21.06.2019 15:10
Polygons efgh and e′f′g′h′ are shown on the coordinate grid: what set of transformations is performed on efgh to form e′f′g′h′? a. a translation 1 unit to the left followed by a 90-degree counterclockwise rotation about the origin b. a translation 1 unit to the right followed by a 90-degree counterclockwise rotation about the origin c. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the right d. a 90-degree clockwise rotation about the origin followed by a translation 2 units to the left
Answers: 1
Mathematics, 21.06.2019 15:40
Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots
Answers: 2
Mathematics, 21.06.2019 16:30
Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.
Answers: 1
ATTEMPT ALL QUESTIONS
1 What is the oxidation number of chromiumin the ionic compound ammonium
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