Question

How many moles of sodium are in 100 mL of a 0.50 M solution of Na2SO4?

Answer 1

mole = volume x concentration
mole = (100/1000)dm^3 x 0.5M = 0.05 mol

Answer 2

This isn't complete yet, 0.05moles are in \(Na_2SO_4\). You have to find out the moles of sodium, Na, in \(Na_2SO_4\), that is:
\[0.05molNa_2SO_4 \times \frac{2~molNa}{1~molNa_2SO_4}=0.1~mol~of~Na\]

Answer 3

Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (f*g)(-5)

Answer 4

If https://dlap.gradpoint.com/Resz/~0.H5Nd26u4FRMyUA6.1KhFdZPyJ_eB50_PyWuvUEA46ue4_B2wc9knAegCDUw/7234256,D47/Assets/questions/test/algebra_2/alg2inve/mc029

Answer 5

PLS HELP!!!
Evaluate the piecewise function at the indicated value from the domain: https://dlap.

Answer 6

PLS HELP!!!
Graph the relation shown in the table. Is the relation a function? Why or why not?
https://dlap.

Answer 7

Which two lines in this excerpt from Guy de Maupassant's short story "Boule de Su

Answer 8

PLS HELP!!!
If f(x) = 5x u2013 6, what is the equation for fu20131(x)?

Answer 9

Please check answer

Answer 10

Anatomy Tutorial: Accessory Structures of the Eye

Answer 11

Alice and Becky live on Parkway East, at the intersections of Owens Bridge and Bay Bridge, respectively.

Answer 12

Any cool unicode characters?

‮ This reverses the texts after
(some games d

Answer 13

Anatomy Tutorial: Olfaction & Gustation

Answer 14

A shape is shown on the graph:

A coordinate grid is shown from positive 8 to negative 8 on the x-axis and from positive 8 to negative 8 on the y-axis.

Answer 15

WHAT IS WORSE FOR YOU
JUUL OR A PACK OR CIGERATES?

(Debate time)

Answer 16

@ultrilliam

Answer 17

The midpoints of the sides of a square form a square. True or False?

Answer 18

The purpose of studying the insects at a crime scene is to help establish _____.

Answer 19

The insect colonization of a corpse is _____.

unpredictable
predictable based on

Answer 20

The young maggots grow rapidly because of _____ offered by the dead body.

the ba

Answer 21

The rules of rounding are completely different for decimals compared to whole numbers.

Answer 22

Nancy Billows bought 150 shares of NBC Universal stock at $22.885 per share. Her broker charged her $22.