kishae15 kishae15

11-02-2021
Chemistry

contestada

how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2

Respuesta :

waleedkhan001002 waleedkhan001002

11-02-2021

Answer:

0.047

Explanation:

Data : 5g , Na2CO3

Formula:

Molecular mass of Na2Co3 = no.of atomic mass x no. of atom

moles = mass÷ molecular mass

molecular mass = 2(23)+1(12)+3(16)

=106amu

moles = 5÷106

= 0.047 Ans:

Answer Link

Otras preguntas

If you need information from someone, what type of sentence would you most likely use?A. Interrogative B. Declarative C. Imperative D. Exclamatory

The city of constantinople was in a key location on the strait that links the mediterranean sea with the a. caspian sea. b. black sea. c. aegean sea. d. red

what do muslims do during ramadan

cartilage is like ? A fluid filled sac B spongey layer c smooth protective coating

Which of the following have been associated with an increased risk for cancer? select one: a. caffeine b. omega-3 fatty acids c. fluoridated water d. high f

one of the 2002 candidates for chancellor of germany edmund stouter argued that germany should improve its economy in the markets thus we was proposing that the

4 factors of the plant life circle?

which of the following values in the set below will make the equation 5x 6 = 6 true? (only input the number.) {0, 1, 2, 3, 4}

how to simplify 3/9 as a fraction

Those who exercise regularly have a milder physical stress response than nonexercisers.