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sergiy2304 [10]
3 years ago
15

Most scientific investigations are driven by the desire to answer a question. true or false

Chemistry
1 answer:
beks73 [17]3 years ago
8 0
This awnser will be true because that's what it is and will always be
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Could plasma be made of atoms ?
valentinak56 [21]
Like gases, plasmas have no fixed shape or volume, and are less dense than solids or liquids. But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely.
8 0
3 years ago
Read 2 more answers
A volume of 90.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What
goblinko [34]

<u>Answer:</u> The molarity of KOH is 0.84 M.

<u>Explanation:</u>

To calculate the concentration of base, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is H_2SO_4

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is KOH.

We are given

n_1=2\\M_1=1.50M\\V_1=25.2mL\\n_2=1\\M_2=?M\\V_2=90mL

Putting values in above equation, we get:

1\times 1.50\times 25.2=2\times M_2\times 90\\\\M_2=0.84M

Hence, the molarity of KOH is 0.84 M.

7 0
3 years ago
How many total electrons are in a Fe2 ion?
Rina8888 [55]
Electronic distribution of iron Fe²+

1s^2,2s^2,2p^6,3s^2,3p^6,3d^6,4s^2

26 -  2 = 24 electrons

hope this helps!

8 0
2 years ago
........PLEASE HELP........
murzikaleks [220]
You can look your question up in the Brainly ask your question. It’s in there!
5 0
3 years ago
Decide which element probably has a boiling point most and least similar to the boiling point of potassium.
larisa86 [58]

Explanation:

  • The boiling point of Potassium is most similar to the element sodium , since , both the elements belong to the same group i.e. , the group one , Hence , the most of the physical chemical properties are same , irrespective of some exceptions .

Hence , the Boiling point of Potassium and sodium are the same .

  • The boiling point of Potassium is least similar to the element helium , since , both the elements belong to different groups , Since , Helium has a negative boiling point and is one of the most stable element , being a noble gas .
4 0
2 years ago
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