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MA_775_DIABLO [31]
2 years ago
7

Joe is lifting boxes to load a trailer. To follow proper lifting procedures, Joe should:

Chemistry
1 answer:
masha68 [24]2 years ago
3 0
<span>oe is lifting boxes to load a trailer. To follow proper lifting procedures, Joe should:</span>
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A poisoned pill contains 0.00048 moles of KCN. How many molecules are in this sample?
mario62 [17]

Answer:

2.89 \times  {10}^{20}  \:  \: molecules

Explanation:

The number of molecules of KCN can be found by using the formula

<h3>N = n × L</h3>

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 0.00048 × 6.02 × 10²³

We have the final answer as

2.89 \times  {10}^{20}  \:  \:  \: molecules

Hope this helps you

7 0
1 year ago
How could installing new technology, such as scrubber machines, affect the factories required to install them? Name a positive a
Sindrei [870]

Answer:

Installing new technology, such as scrubbers, in factories will decrease their harmful emissions. This helps improve the safety of the surrounding community and the workers. But this technology is expensive and requires time and effort to install.

Explanation:

Hope this helped :)

5 0
2 years ago
An unknown element, x, reacts with lithium to form the compound li2x. in other compounds this element also can accommodate up to
aliina [53]
<span>Answer Choices: 
A) Ca 
B) O 
C) Cl 
D) s</span>

<span>the formula is Li2X, so the charge on the X anion must be 2- 

the ion is X2- elements in group 6A form monatomic ions with a 2- charge. In your list that is O or Po 

If the element can accomodate 12 electrons then it can have an expanded octet. Only elements in period 3 and higher can have expanded octets. 

So you are looking for a group 6A element in period 3 or higher.
cA would not intereact with LI BECAUSE ITS A METAL The only element that fits the bill is D) S</span>

7 0
2 years ago
Read 2 more answers
Which of the following mixtures, with each component present at a concentration of 0.1 M, has a pH closest to 7? O A. HCIO(aq) a
eduard

for HClO, pKa = 7.54

for HNO_2, pKa = 3.15                                    

for CH3 COOH, pKa = 4.74    

Explanation:

The concentration of the solution given is 0.1 M has a pH closest to 7

The mixtures are weak acids and their salts except

HNO_3 and NaNO_3                                         pH = pH is near to '1'

for buffers( acidic)                                               pH = pKa + log [salt] / [acid]

therefore [salt] = [acid] = 0.1                               pH = pKa + log 0.1 / 0.1 = pKa

                                                     pH = pKa

for HClO, pKa = 7.54

for HNO_2, pKa = 3.15                                     therefore HClO and NaclO

                                                                         mixture hs a pH closest to '7'

for CH3 COOH, pKa = 4.74                

5 0
2 years ago
Read 2 more answers
PLZ HELP!!! ILL MARK BRAINLIEST!!! You read an article written by an amateur ghost hunter. It includes the following paragraph.
djverab [1.8K]

No, it is not a scientific claim. If a ghost hunter catches a voice on video like ghost hunters do you can either believe it or not. Ghosts are more of a  i believe it you dont have to type of thing becasue they have not been scientifically proven to exist.

4 0
2 years ago
Read 2 more answers
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