Seudónimo Seudónimo

01-06-2015
Chemistry

contestada

What is the gram-formula mass of (NH4)3PO4?(1) 112g/mol (2) 121g/mol (3) 149g/mol (4) 242g/mol

Respuesta :

lulu1991 lulu1991

01-06-2015

The gram-formula mass means that the mass of one mole molecule. Then you just need to calculate the elements together. So the gram-formula mass of (NH4)3PO4 is equals to (14+4)*3+31+16*4= 149g/mol. So the answer is (3).

Answer Link

Otras preguntas

Complete the sentences below using the words below, you may use each word more than once ~ INCREASES , DECREASES , STAYS THE SAME ~ • When the air is cooled,

-3x-3y=3 5x+y=-17 What is the answer ?

For a given chemical reaction, the addition of a catalyst provides a different pathway that(1) decreases the reaction rate and has a higher activation energy (2

If triangle RST is congruant to triangle ABC, the measure of angle A equals x^2-8x, and the measure of angle C equals 4x-5, and the measure of angle R equals 5x

My great-grandfather was a pilot during World War I. Which is also known as the Great War.

Factor 3x^2 + 10x + 4. A. (3x – 4)(x – 1) B. (3x – 2)(x – 2) C. (3x – 4)(x + 1) D. The polynomial is prime.

Genghis Khan personally led invasions against _____.

Which sample of matter is classified as a substance? (1) air (3) milk(2) ammonia (4) seawater

which 1828 national party favored states rights?

With what purchase did the United States reach its present size?