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
ra1l [238]
2 years ago
10

Among the alkali metals, the tendency to react with other substances. A. does not vary among the members of the group. . B. incr

eases from top to bottom within the group. . C. varies in an unpredictable way within the group. . D. decreases from top to bottom within the group.
Chemistry
1 answer:
yKpoI14uk [10]2 years ago
8 0
B is correct. As you move down group 1, the elements become more reactive with other elements because the electrons have a weaker attraction to their own atoms nucleus which means attraction with other elements is much stronger, making the atom more reactive.
You might be interested in
Someone help me Explain how non-genetic factors can affect phenotype. Give an example.
Yanka [14]

Answer:

one could be the weather.

phenotypes are physical characteristics of a person and there non genetic factors that play a role.

weather and environmental factors, your surroundings and orders related to the environment basically

6 0
2 years ago
I need help with these quickkk WILL GIVE BRAINLIEST PLS
DerKrebs [107]

Answer: number 2

Explanation:

8 0
2 years ago
Which best describes nuclear energy?
svet-max [94.6K]

Answer:

The correct answer is - D.  the energy stored inside the center of an atom.

Explanation:

Each atom has a small center in it called the nucleus and the energy that holds the nucleus or center of the atom together in the atom is known as nuclear energy.

It is the energy that is stored in the center of the atom and normally does not come out, however, in some radioactive atoms the sends some part of the energy as radiation.

Thus, the correct answer is - D.  the energy stored inside the center of an atom.

6 0
3 years ago
Bae wya .......... please bae I can't find you please show up ​
Elan Coil [88]

Answer:

Your babe is in your school

Explanation:

go ask babes out

7 0
3 years ago
Read 2 more answers
opper(I) ions in aqueous solution react with NH 3 ( aq ) according to Cu + ( aq ) + 2 NH 3 ( aq ) ⟶ Cu ( NH 3 ) + 2 ( aq ) K f =
Y_Kistochka [10]

Answer:

55.373g/l

Explanation:

The dissolved amount of sparingly soluble salts is interlinked with a unitlesss quantity called as solubility product. It is a fixed quantity that only increases with the rise in temperatures and is used to predict the salting out of compounds. If the value of ionic product (Q) is larger than (Ksp), precipitation of compound occurs.

Given:

The solubility product of CuBr is 6.3×10−9.

The concentration of NH3 is 0.10 M.

Formula and Calculations:

The dissolution reaction (I) of CuBr is shown below.

The reaction showing dissolution of CuBr in NH3 is shown below.

The above reaction can be obtained by adding reaction (I) and (II) as shown below.

The equilibrium constants will get multiplied.

Suppose the solubility of CuBr is “s”.

It is given that concentration of NH3 is 0.10 M.

The equilibrium constant expression for the above reaction is as follows,

Here,

The concentration of pure solids is 1 M. Thus, the concentration of CuBr is 1 M.

As calculated, the value of Ksp is 396.9.

Substitute all the required values in above formula.  

On further solving above equation,

Therefore, the solubility of CuBr in ammonia is 0.386 M.

The formula to calculate solubility

Solubuility (g/l)= Molarity(M) x Molarmass

Chemistry homework question answer, step 2, image 10

The molar mass of CuBr is 143.45 g/mol.

The formula to calculate solubility in g/L is given below.

The molar mass of CuBr is 143.45 g/mol.

therefore,

solubility = 0.386M x 143.45g/mol

where (M = mol/l)

solubility = 55.375g/l

5 0
3 years ago
Other questions:
  • Which of the following represents the most matter?
    5·1 answer
  • Calcium lon<br> Protons:<br> Neutrons: 20<br> Electrons:<br> Mass:<br> *it’s an ion*
    10·1 answer
  • What determines the volume of a gas?
    9·2 answers
  • Match each SI unit to the quantity it measures mass temperature time electric current
    12·1 answer
  • I am something that is alive or was once alive.
    7·2 answers
  • A cation forms when an atom gains one or more electrons. True False
    7·2 answers
  • Question 11 please HELP
    9·1 answer
  • What makes up nearly all of the atom's mass?
    15·2 answers
  • If we add 20g of salt to 150g of water, what is the concentration by mass of the solution?
    15·1 answer
  • Upon balancing the equation what is the smallest possible integers that goes in front O₂? HBr + O₂ ➞ H₂O + Br₂ *
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!