Choose the correct letter from the choices 33. A compound with a composition of 87.5% N and 12.5% H was recently discovernd. Whit is theempirical formula of this compound?b. NH2a N2H4c. NH334. Study of the quantitative relationships of substances involved in the reaction isd. NHa chemical equationb. balancing equation c. stoichiometry d. chemical reaction35. The number 6.022 x 10 is the number of particles present in exactly 12-g of carbon is known asa. Charle's no.b. Avogadro's no.c. Newton's no.36. How many molecules of N20 are there in 60.0 g of N20?d. Pascal no.a. 3.61 x 1025b. 8.21 x 102c. 1.00 x 103 d. 6.022 x 10337.1 mole of CO2 is equal toа. 24grams.b. 34 c. 4438. How many grams of hydrogen are there in 2.5 g of water?b. 0.28 gd. 50a. 3.5 gc. 0.95 gd. 2.22 g39-40. Consider the chemical equation below2 CH2 +5 02 - 4 CO2 +2 H20%3D(MW: C2H2 = 26; 02 = 32; CO2 = 44; H20 = 18)39. Calculate the mass in grams of O2 required to react with 50 g C2H2?b. 153. 85 gc. 120.53 gd. 180.86 ga. 145.50 g40. How many grams of CO2 produced in burming 50 g of C2H2?b. 175.0 gd. 192.03 gc. 181.0 ga. 169.0 g41. Complete the following nuclear reaction231Pa + ßC. 정Paof radinactive decayd. 230Ub. 230Th23491a. 231Th90490d nositron

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Answered: 33. A compound with a composition of…

33. A compound with a composition of 87.5% N and 12.5% H was recently discovered. W hit is the empirical formula of this compound? b. NH2 a N2H4 c. NH3 d. NH 34 Shudu

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

Choose the correct letter from the choices

33. A compound with a composition of 87.5% N and 12.5% H was recently discovernd. Whit is the
empirical formula of this compound?
b. NH2
a N2H4
c. NH3
34. Study of the quantitative relationships of substances involved in the reaction is
d. NH
a chemical equation
b. balancing equation c. stoichiometry d. chemical reaction
35. The number 6.022 x 10 is the number of particles present in exactly 12-g of carbon is known as
a. Charle's no.
b. Avogadro's no.
c. Newton's no.
36. How many molecules of N20 are there in 60.0 g of N20?
d. Pascal no.
a. 3.61 x 1025
b. 8.21 x 102
c. 1.00 x 103 d. 6.022 x 103
37.1 mole of CO2 is equal to
а. 24
grams.
b. 34 c. 44
38. How many grams of hydrogen are there in 2.5 g of water?
b. 0.28 g
d. 50
a. 3.5 g
c. 0.95 g
d. 2.22 g
39-40. Consider the chemical equation below
2 CH2 +5 02 - 4 CO2 +2 H20
%3D
(MW: C2H2 = 26; 02 = 32; CO2 = 44; H20 = 18)
39. Calculate the mass in grams of O2 required to react with 50 g C2H2?
b. 153. 85 g
c. 120.53 g
d. 180.86 g
a. 145.50 g
40. How many grams of CO2 produced in burming 50 g of C2H2?
b. 175.0 g
d. 192.03 g
c. 181.0 g
a. 169.0 g
41. Complete the following nuclear reaction
231Pa + ß
C. 정Pa
of radinactive decay
d. 230U
b. 230Th
234
91
a. 231Th
904
90
d nositron

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