4 56 kJ of heat is addod to a 293 g block of inon (S.H-0.444 gC)at 250 C, what w

Question

4 56 kJ of heat is addod to a 293 g block of inon (S.H-0.444 gC)at 250 C, what will be the final temperature of the iron block b. c, d. 60.1 35.1 25.1 10.1 6. The percent ionic character/percent covalent character varies from compound to compound. Choose the compound with the highest covalent character and the one with the highest ionic character from Os. NOs. SiOs, and SnO NO most covalent; SnO, mest ionic b. O most covalent; SnO most ionic c. O most covalent:Si0; most ionic d NO; most covalent; Si0 most ionic 7. Predict the bond angles aroand C in fommic acid, HCOOH a. 90 C. 180 d. 120 Which weighs most? a. 3.61 x 10 molecules of nitrogen b 0.480 mol of nitrogen gas 6.45x 10 atom of nitrogen d 14.0 gof nitrogen Consider the following reaction for the next two questions: Soo + 12 0 s sose 9. The reaction of 1.50 x 10 mols of oxygen would peosduce what mass of SOs (MW 80.0)? a 12.0 b. 8.00g 0.250 g d. 1.00 g 0. Upon complete reaction of 217.6 g of S (MW-256) and 288.0 g of O(MW 32.0) according to the reaction shown above, the reaction vessel would contain: a 38.4 g of Sao and 467 g of SOxp .Only 506 g of SOp b. 38.4g of Osp and 544 g of SOsg d. 25.6 g of So and 480 g of Sop What is the density in g per liter of UFap (MW-352) at 25 "C and 650 Tom? a 26.6 gL b. 16.8gL c 11.lgL d.123 g/

Explanation / Answer

5)

Answer

a) 60.10

Explanation

q = m × T × C

4560J = 293g× T × 0.444J/g

T = 35.05

Final temperature = 25 + 35.05 = 60.10

6)

Answer

b) O2 most covalent, SnO2 most ionic

7)

Answer

d) 120°

Explanation

sp2 hypridization give 120° angle

8)

Answer

c) 6.45×10^25atoms of Nitrogen

9)

Answer

b) 8g

10)

Answer

d) 25.6g of S8 and 480g of SO3(g)

11)

Answer

d) 12.3g/L

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