1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lynna [10]
3 years ago
6

What is the oxidation number of Mn in KMnO₄? a. -7 b. -3 c. 0 d. +3 e. +7

Chemistry
1 answer:
Maurinko [17]3 years ago
4 0
I think the answer is e? That's if o is -2 if not it will be a
You might be interested in
Thats the guide to the project , someone help please 20 points
Fittoniya [83]

Answer:

do you want the whole project or just a part of it done ?

Explanation:

4 0
3 years ago
Read 2 more answers
An artifact originally had 16 grams of​ carbon-14 present. the decay model upper a equals 16 e superscript negative 0.000121 ta=
xeze [42]

<u>Given:</u>

Initial amount of carbon, A₀ = 16 g

Decay model = 16exp(-0.000121t)

t = 90769076 years

<u>To determine:</u>

the amount of C-14 after 90769076 years

<u>Explanation:</u>

The radioactive decay model can be expressed as:

A = A₀exp(-kt)

where A = concentration of the radioactive species after time t

A₀ = initial concentration

k = decay constant

Based on the given data :

A = 16 * exp(-0.000121*90769076) = 16(0) = 0

Ans: Based on the decay model there will be no C-14 left after 90769076 years

3 0
3 years ago
Read 2 more answers
Keesha performed a chemical reaction and the products looked quite different from the reactants. She knew the amount of matter h
lakkis [162]

Answer:

the spotlight effect.

Explanation:

The spotlight effect is a tendency to think that people get noticed more often than they really do. It is an overestimation of the situation regarding the concern of getting observed. It concerns the self-confidence of an individual. For example, an individual feels that everybody in a party would notice him for a bad pair of shoes while in reality, it does not concern them.

As per the question, the overestimation of people's reaction is known as the spotlight effect.

5 0
3 years ago
the decomposition of calcium carbonate to calcium oxide and carbon dioxide only takes place at very high temperatures, making th
USPshnik [31]
So calculate the H for the other two reactions a room temperature and combine the reactions to calculate the H of the decomposition of calcium carbonate using the Hess's Law
4 0
3 years ago
I need help please!!! Name the parts making up the female part of the flower and state what each part does. Please use your own
Greeley [361]
<h2><u>A</u><u>n</u><u>s</u><u>w</u><u>e</u><u>r</u><u>:</u><u>-</u></h2>

<em>The female part is the pistil. The pistil usually is located in the center of the flower and is made up of three parts: the stigma, style, and ovary. The stigma is the sticky knob at the top of the pistil. It is attached to the long, tubelike structure called the style.</em>

<h3><em><u>H</u></em><em><u>o</u></em><em><u>p</u></em><em><u>e</u></em><em><u> </u></em><em><u>I</u></em><em><u>t</u></em><em><u> </u></em><em><u>W</u></em><em><u>i</u></em><em><u>l</u></em><em><u>l</u></em><em><u> </u></em><em><u>H</u></em><em><u>e</u></em><em><u>l</u></em><em><u>p</u></em><em><u> </u></em><em><u>Y</u></em><em><u>o</u></em><em><u>u</u></em><em><u>!</u></em></h3>
6 0
2 years ago
Other questions:
  • Choose the chemical equation that is correctly balanced. 2Ca(s) + Cl2(g) → CaCl2(s) 4Mg(s) + O2(g) → 2MgO(s) Li(s) + Cl2(g) → 2L
    14·2 answers
  • When 2-methylpropane is treated with bromine in the presence of UV light, one product predominates a. Identify the structure of
    8·1 answer
  • What is the most accurate sight for a firearm?
    11·1 answer
  • Decribe what happens to the.shape and volume of a solid a liquid and a gas when you place each into seperate closed containers c
    5·1 answer
  • Given these reactions, where X represents a generic metal or metalloid 1 ) H 2 ( g ) + 1 2 O 2 ( g ) ⟶ H 2 O ( g ) Δ H 1 = − 241
    13·1 answer
  • You need to decontaminate water cans previously used for nonpotable water. You calculate that five gallons of disinfecting solut
    6·1 answer
  • HELP ME PLZ!!! I really dont know this!!! What characteristic of metals makes them good electrical conductors? -They have mobile
    13·1 answer
  • Decane (C10H22) can be split into propene (C3H6) and heptane (C7H16) by cracking
    10·1 answer
  • If the prescribed dosage of milk of magnesia Mg(OH)2 is 3.5 moles, how many grams
    5·1 answer
  • The following molecular scenes depict an important reaction in nitrogen chemistry (nitrogen is blue; oxygen is red): Write a bal
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!