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
Sophie [7]
3 years ago
10

The most active of all the chemical elements is a halogen known as

Chemistry
2 answers:
kkurt [141]3 years ago
5 0
I personally thought flourine. That is because it contains less outer shell electrons than the other elements. This results in the element being able to attract another electron (becoming stable) more easily.
rodikova [14]3 years ago
3 0
Astatine. Because it has the smaller shell of electrons. I believe
You might be interested in
An object with too many is negatively charged.
zubka84 [21]

Answer:Electrons

Explanation:

Because it is!!

3 0
3 years ago
. How many grams of NaOH would you need to make 450 mL of a 0.250 M NaOH solution
Stella [2.4K]
You have molarity and you have volume. Use the formula :
Molarity(M)= Moles(N)/Liter(L)            to get the solution. 
450 ml= .450 L
.250 = N/.450
N=.1125 moles of NaOH.
 And since you know the moles, use the molar mass to figure out the grams.
<span> (40g/mol NaOH) x (.1125 mol) =  
4.5g of NaOH.
</span>
Hope it helps. Good luck on chemistry.
7 0
4 years ago
Butane C4 H10 (g),(mc016-1.jpgHf = –125.7), combusts in the presence of oxygen to form CO2 (g) (mc016-2.jpgHf = –393.5 kJ/mol),
Mice21 [21]
 once you do all the math the answer is c
4 0
3 years ago
Read 2 more answers
Transuranium elements are artificial and may be prepared by a fusion process in which heavy nuclei are bombarded with light ones
Scilla [17]

Answer:

_{97}^{345}\textrm{Bk}

Explanation:

In a nuclear reaction, the total mass and total atomic number remains the same.

Am has an atomic number of 95. So correct reaction is:-

^{343}_{95}\textrm{Am}+^{4}_{2}\textrm{He}\rightarrow ^A_Z\textrm{X}+2^1_0\textrm{n}

To calculate A:

Total mass on reactant side = total mass on product side

343 + 4 = A + 2

A = 345

To calculate Z:

Total atomic number on reactant side = total atomic number on product side

95 + 2 = Z + 0

Z = 97

Hence, the isotopic symbol of unknown element is _{97}^{345}\textrm{Bk}

7 0
3 years ago
A solution is made by dissolving 0.565 g of potassium nitrate in enough water to make up 250. mL of solution. What is the molari
aalyn [17]
<h3>Molar mass of Potassium Nitrate:-</h3>

\\ \large\sf\longmapsto KNO_3

\\ \large\sf\longmapsto 39u+14u+3(16u)

\\ \large\sf\longmapsto 53u+48u

\\ \large\sf\longmapsto 101u

\\ \large\sf\longmapsto 101g/mol

Now

\boxed{\sf No\:of\:moles=\dfrac{Given\:mass}{Molar\:mass}}

\\ \large\sf\longmapsto No\:of\:moles=\dfrac{0.565}{101}

\\ \large\sf\longmapsto No\:of\:moles=0.005mol

We know

\boxed{\sf Molarity=\dfrac{Moles\:of\:solute}{Vol\:of\:Solution\:in\:L}}

\\ \large\sf\longmapsto Molarity=\dfrac{0.005}{\dfrac{250}{1000}L}

\\ \large\sf\longmapsto Molarity=\dfrac{0.005}{0.250}

\\ \large\sf\longmapsto Molarity=0.02M

8 0
3 years ago
Read 2 more answers
Other questions:
  • The first letter of a chemical symbol is capitalized.true or false
    11·1 answer
  • Which of the following statements best explains the trends in boiling points?
    10·2 answers
  • Salts usually have a low melting point
    12·2 answers
  • Please help! ASAP Thanks &lt;3
    5·1 answer
  • Which of the following statements is NOT a part of John Dalton's atomic theory?
    6·1 answer
  • Which explanation correctly describes why it is important for a cell’s surface-area-to-volume ratio to not be too small?
    13·1 answer
  • How many grams are in 5.60 moles of sodium hydroxide (NaOH)​
    8·2 answers
  • Given the balanced equation representing a reaction:
    14·1 answer
  • When a piece of metal is irradiated with UV radiation (λ = 162 nm), electrons are ejected with a kinetic energy of 3.54×10-19 J.
    14·1 answer
  • The liquid iodomethane has a density of 2.28 g/mL at 20.0°C. If a 109 gram sample of this compound is needed, what volume of the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!