Calcule a massa molecular das seguintes substâncias A) C2 H6B) PH3C) NH3D) NO2E) N2 O3Calcule a mass.... Pergunta de ideia deGustavo5432

December 2019 1 95 Report

Calcule a massa molecular das seguintes substâncias
A) C2 H6
B) PH3
C) NH3
D) NO2
E) N2 O3

Calcule a massa molecular do composto Na2 SO4 . 3H2 0 é
A) 142g
B) 196g
C) 444g
D) 668g
E) 426g

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felipeh A)C2H6
C = 12g, H = 1g
2×12 + 6×1 = 30g/mol

b)PH3
P = 31g, H = 1g
1×30 + 3×1 = 34g/mol

c)NH3
N = 14g, H = 1g
1×14 + 3×1 = 17g/mol

d)NO2
N = 14g, O = 16g
1×14 + 2×16 = 46g/mol

e)N2O3
N = 14g, O = 16g
2×14 + 3×16 = 76g/mol

2)Na2SO4 . 3 H20 é uma molécula hidratada, faça o mesmo procedimento somando o sulfato de sódio e a água

Na = 23u
S = 32u
O = 16u
H = 1u

2×23 + 32 + 4×16 + 6×1 + 3×16 = 196g/mol
Alternativa B

Espero ter ajudado Gu, qualquer dúvida é so falar =D

Gustavo5432 Valeu Lipe ;)

felipeh é nozes!! hehe

URGENTE ????? Uma enefermeira mediu a temperatura de um paciente com um terremoto quadrado na escala fahrenhit e encotrou 104 graus f a temperatura, desse paciente corresponde o m c a que e A)38 B)40 C)36 D)34 E)32

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URGENTE URGENTE ???? Complete wilth do or doer and traslate. A) I wilth tv? B)They usualty e at pizza? C)He go to school by Car? D)Peder go to the gym? E)Lisa study English? F)The cat drink milk? G)__you eat fish?

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URGENTE ????? Uma enefermeira mediu a temperatura de um paciente com um terremoto quadrado na escala fahrenhit e encotrou 104 graus f a temperatura, desse paciente corresponde o m c a que e A)38 B)40 C)36 D)34 E)32

URGENTE URGENTE ????? 1) Complete wilt the simple present. A)Dogs(bark). B)They Usually(take) a bus. C)He_(work) near his house. D)Sara_(like) her job. E)Jonh_(get up) at 6:00 am. F)The film_(start) at 8:00 p.m. G)She____(read) a now book. 2) translate the 1 question.

Porque sentimos frio ? Porque utilizamos o coberto quando estamos com fio ?

URGENTE URGENTE ???? Complete wilth do or doer and traslate. A) I wilth tv? B)They usualty e at pizza? C)He go to school by Car? D)Peder go to the gym? E)Lisa study English? F)The cat drink milk? G)__you eat fish?

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URGENTE ????? Uma enefermeira mediu a temperatura de um paciente com um terremoto quadrado na escala fahrenhit e encotrou 104 graus f a temperatura, desse paciente corresponde o m c a que e A)38 B)40 C)36 D)34 E)32

URGENTE URGENTE ????? 1) Complete wilt the simple present. A)Dogs____(bark). B)They Usually______(take) a bus. C)He_____(work) near his house. D)Sara_____(like) her job. E)Jonh_____(get up) at 6:00 am. F)The film_____(start) at 8:00 p.m. G)She______(read) a now book. 2) translate the 1 question.

Porque sentimos frio ? Porque utilizamos o coberto quando estamos com fio ?

URGENTE URGENTE ???? Complete wilth do or doer and traslate. A)______ I wilth tv? B)______They usualty e at pizza? C)______He go to school by Car? D)______Peder go to the gym? E)______Lisa study English? F)______The cat drink milk? G)______you eat fish?

Recomendar perguntas

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URGENTE URGENTE ????? 1) Complete wilt the simple present. A)Dogs(bark). B)They Usually(take) a bus. C)He_(work) near his house. D)Sara_(like) her job. E)Jonh_(get up) at 6:00 am. F)The film_(start) at 8:00 p.m. G)She____(read) a now book. 2) translate the 1 question.

URGENTE URGENTE ???? Complete wilth do or doer and traslate. A) I wilth tv? B)They usualty e at pizza? C)He go to school by Car? D)Peder go to the gym? E)Lisa study English? F)The cat drink milk? G)__you eat fish?