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
Fudgin [204]
1 year ago
13

I need an answer ASAP

Chemistry
1 answer:
OverLord2011 [107]1 year ago
6 0

Answer: Alkali metals, group 1

Explanation: Group 1 means 1 valence electron. This group is called alkali metals, which indicates that it is a metal. They are highly reactive because only 1 electron needs to move to bond with something (since it only has 1 valence electron)

You might be interested in
Help with Organic chemistry mechanism
yarga [219]
3H + 3Br = HBr9 Organic chemistry mechanism
4 0
2 years ago
Which element has the following Electron configuration? *
GuDViN [60]
Magnesium. You can count the electrons in each level and because the number of electrons is the same with protons you have the atomic number based of which you can get the element in the periodic table
3 0
2 years ago
PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP
vivado [14]

Answer:

not sure about it .I also need an answer

8 0
2 years ago
Part 1: A cylinder containing 20.0 L of compressed nitrogen is connected to an empty (evacuated) vessel with an unknown volume.
baherus [9]

Answer:

The volume of the vessel is 250 L

Partial pressure of hydrogen = 189 torr

Explanation:

Using Boyle's law  

{P_1}\times {V_1}={P_2}\times {V_2}

Given ,  

V₁ = 20.0 L

V₂ = ?

P₁ = 25 atm

P₂ = 2 atm

Using above equation as:

{P_1}\times {V_1}={P_2}\times {V_2}

{25}\times {20.0}={2}\times {V_2}

{V_2}=\frac {{25}\times {20.0}}{2}\ L

{V_2}=250\ L

<u>The volume of the vessel is 250 L.</u>

According to Dalton's law of partial pressure:-

P_{H_2}=Mole\ fraction\times Total\ Pressure

So, according to definition of mole fraction:

Mole\ fraction\ of\ H_2=\frac {n_{H_2}}{n_{H_2}+n_{He}}

Also,

Mole fraction of H₂ = 1 - Mole fraction of He = 1 - 0.75 = 0.25

So,

Total pressure = 756 torr

Thus,

P_{H_2}=0.25\times 756\ torr

<u>Partial pressure of hydrogen = 189 torr.</u>

7 0
3 years ago
How do the melting and boiling points of water compare to that of other molecular compounds of similar molar mass?
sergey [27]

Answer:

The answer is D.

Explanation:

3 0
2 years ago
Other questions:
  • Give five examples of structures with this formula (c6h12). at least one should contain a ring, and at least one should contain
    10·1 answer
  • If an unshielded sample of radioactive material emits alpha particles, what effect will it have on a person sitting in the next
    9·2 answers
  • If an ice cube melts at 0oC but water also freezes at 0oC, what is the difference between melting and freezing in terms of (a) t
    8·1 answer
  • All moving parts produce friction. true or false
    10·2 answers
  • Americium-241 is used in smoke detectors. It has a first-order rate constant for radioactive decay of k = 1.6x10^−3yr−1. By cont
    10·1 answer
  • What is the law of multiple proportions
    6·1 answer
  • How many mole ratios can be correctly obtained from the chemical equation 2NO ® N2 + O2? Select one:
    10·1 answer
  • I’ve been stuck on these 5 questions!? Can you guys help?!
    8·1 answer
  • Help me!!!<br> Pleaseeee!!!!
    14·1 answer
  • Calculate the Gibbs energy, entropy, and enthalpy of mixing when 1.00mol C6H14 (hexane) is mixed with 1.00mol C7H16 (heptane) at
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!