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2 years ago

How is wind deflation different from wind abrasion??

1 answer:

8 0

Wind deflation is when the wind blows away tiny sediments, while wind abrasion is where tiny bits of sediment are blown against rocks that they hit resulting in pitting, scarring, and scratching.

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What is the pH of a 5.09 x 10-5 M solution of NaOH?

Varvara68 [4.7K]

Answer: The pH of the solution is 9.71

Explanation:

1 mole of NaOH produces 1 mole of sodium ions and 1 mole of hydroxide ions.

We are given:

pOH of the solution = 7.2

To calculate the pH of the solution, we need to determine pOH of the solution. To calculate pOh of the solution, we use the equation:

$pOH=-\log[OH^-]$

We are given:

$[OH^-]=5.09\times 10^{-5}M$

Putting values in above equation, we get:

$pOH=-\log(5.09\times 10^{-5})\\\\pOH=4.29$

To calculate pH of the solution, we use the equation:

$pH+pOH=14\\pH=14-4.29=9.71$

Hence, the pH of the solution is 9.71

7 0

2 years ago

Energy conversion means reducing energy use True or false

I am Lyosha [343]

False, energy conversion just means the energy is going to be used by another force

3 0

2 years ago

What is the measure of the efficiency of a chemical reaction? percent yield annual yield actual yield theoretical yield

artcher [175]

Answer:

Precent yield

Explanation:

This is takes into account how much of a substance should have been created (theoretical yield) and compares it to what was actually created (the actual yield).

6 0

3 years ago

How many moles are in 234.4 grams of oxygen

uysha [10]

Answer:

7.325 mol.

Explanation:

use the formula n=m/mr

so that makes:

234.4/16*2

which is 7.325 mol.

4 0

3 years ago

Why is carbon dioxide nonpolar?

vovikov84 [41]

CO2 is a linear molecule and the Oxygen (O) atoms on each end are symmetrical. Polarity results from an unequal sharing of valence electrons. Because of this symmetry there is no region of unequal sharing and CO2 is anonpolar molecule

8 0

2 years ago