Ask question

Ask question

All categories

Lubov Fominskaja [6]

3 years ago

6

A small pebble breaks off of a huge boulder. Th e pebble has the same density

2 answers:

AURORKA [14]3 years ago

8 0

Answer: Hmmmm. Let's see...

Explanation: A pebble has the same density and a boulder when it rolls down a hill. The pebble will most-likely roll down very fast which can make it dense.

<h2 /><h2>I really hope this helped! like at all...</h2><h2>Truthfully, I don't know a lot of this type of stuff.. But worth a shot, right?</h2>

Rashid [163]3 years ago

8 0

This statement can be true because the pebble and the huge boulder are made up from the same compound of materials meaning they will most likely have the same hardness when measured

You might be interested in

Why could a diet low in carbohydrates be dangerous?

GenaCL600 [577]

B-The body could break down proteins from muscles for energy.

8 0

3 years ago

Read 2 more answers

What type of heat transfer occurs when you touch a metal

Galina-37 [17]

Answer:

heat conduction

Explanation:

7 0

3 years ago

Read 2 more answers

Zepler [3.9K]

Answer:2170

Explanation:

8 0

3 years ago

Which bent shape has more repulsion and a smaller bond angle?<br> bent 6A<br> bent 5A

Step2247 [10]

Bent 6A is the answer

8 0

3 years ago

A tetraphenyl phosphonium chloride (TPPCl) powder (FW=342.39) is 94.0 percent pure. How many grams are needed to prepare 0.45 L

slega [8]

Answer:

5.41 g

Explanation:

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Or,

$Moles =Molarity \times {Volume\ of\ the\ solution}$

Given :

For tetraphenyl phosphonium chloride :

Molarity = 33.0 mM = 0.033 M (As, 1 mM = 0.001 M)

Volume = 0.45 L

Thus, moles of tetraphenyl phosphonium chloride :

$Moles=0.033 \times {0.45}\ moles$

Moles of TPPCl = 0.01485 moles

Molar mass of TPPCl = 342.39 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$0.01485\ g= \frac{Mass}{342.39\ g/mol}$

Mass of TPPCl = 5.0845 g

Also,

TPPCl is 94.0 % pure.

It means that 94.0 g is present in 100 g of powder

5.0845 g is present in 5.41 g of the powder.

<u>Answer - 5.41 g</u>

5 0

3 years ago