keatonluster keatonluster

30-06-2016
Chemistry

contestada

how many moles of solute are contained in a 250 ml solution that has a concentration of.85 m?

A) 210
B)0.21
C)3.4
D)0.29
E)0.85

Respuesta :

Willchemistry Willchemistry

30-06-2016

Volume = 250 mL in liters : 250 / 1000 => 0.25 L

Molarity = 0.85 M

Number of moles:

n = M x V

n = 0.85 x 0.25

n = 0.21 moles

Choice B

Answer Link

Otras preguntas

For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298 K when ∆G = -20.5 kJ/mol?

In gambling, the chances of winning are often written in terms of odds rather than probabilities. The odds of winning is the ratio of the number of successful

a survey is taken to determine which type of vehicle is shown most popular. the data is shown in the bar graph below. what can you conclude about the survey?

What is the ratio of 102 steps walked in 1 minute?

In bacterial DNA replication of the lagging strand, __________ is required for the synthesis of a new DNA strand whereas __________ is required for removing the

John dreamed that he was in a train that entered a tunnel. If a psychologist believed that the dream expressed John's unconscious sexual desires, the psycholog

If, due to a combination of concurring and dissenting justices, fewer than five justices join the opinion of the Supreme Court, that opinion becomes a(n) ______

Given that x=6.2*6^4 and y=4*6^2 ,evaluate x/y

Use the Midpoint Rule with n = 5 to estimate the volume V obtained by rotating about the y-axis the region under the curve y = 1 + 9x3 , 0 ≤ x ≤ 1. (Round your

A 160-N child sits on a light swing and is pulled back and held with a horizontal force of 100 N. The magnitude of the tension force of each of the two supporti