All categories

3 years ago

How many grams are there in 1.18 X 1026 atoms of iridium?

1 answer:

4 0

You want to divide by avagadros number (6.22 x 10^23). This will cancel the atoms unit and give moles, moles of Iridium. Now you want to calculate the atomic mass of Iridium which is in units of grams per mole. Multiply these two numbers and the moles will cancel giving you grams.

Setting up a dimension analysis type of thing helps tremendously. See what you have to cancel in order to get what you want. We canceled the atoms, then we canceled the moles, and then we got grams.

You might be interested in

5. The element copper has naturally occurring isotopes with mass numbers of 63

natali 33 [55]

Answer:

63.616

Explanation:

DATA

1. first atomic mass;m1=63

second atomic mass;m2=65
first percentage;p1= 69.2%
second percentage me;p2=30.8%
average mass;avg= ?

SOLUTION

avg= (m1)(p1) + (m2)(p2)

100

avg= (63)(69.2) + (65)(30.8)

100

avg= 4359.6 + 2002

100

avg= 6361.6

100

avg= 63.616

4 0

3 years ago

Read 2 more answers

Ok, I need helpies! .__.

yKpoI14uk [10]

It is in a large elliptical shape!

3 0

2 years ago

Find the density of Liquid A: Liquid A: Mass-138g Volume – 100 mL.

nlexa [21]

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass of liquid = 138 g

volume = 100 mL

The density of the liquid is

$density = \frac{138}{100} = \frac{69}{5 0}$

We have the final answer as

Hope this helps you

7 0

3 years ago

What does multivalent mean???

salantis [7]

In the context of multivalent ions, it is when it has multiple oxidative states.

4 0

3 years ago

Why do atoms become anion and cations (remember the octet rule and how 8 is a very important number)?

Kryger [21]

Answer:

The atoms become cations because they have lost electrons and the atoms and has a positive charge then atoms become a ions because they have gained electrons from cations and has a negative charge

8 0

3 years ago