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
Kay [80]
3 years ago
5

What is the only letter not appearing on the periodic table?.

Chemistry
1 answer:
ivolga24 [154]3 years ago
3 0

Answer:

The answer is j

Explanation:

You might be interested in
What is the molecular weight mass for KOH
lubasha [3.4K]
The weight is 56.1056 g/Mol hoped this helped
5 0
3 years ago
_______ is the application of scientific knowledge to solve problems or create new products.
astraxan [27]
Having resources? i guess... 
maybe it is critical thinking?
3 0
3 years ago
Read 2 more answers
If the following elements were to combine with each other, choose which demonstrate the Law of Multiple Proportion. Select all t
Ilia_Sergeevich [38]

Missing question: Z:X = 7:1 A:Z = 2.5:1 A:Z = 2.2:1 Y:X = 11:1.

Answer is:<span> Z:X = 7:1 and Y:X = 11:1.
Law of multiple proportions or Dalton's Law said that the ratios of the masses of the second element which combine with a fixed mass of the first element will be ratios of small whole numbers. 
In this example ratios are whole numbers, A:Z = 2.5 : 1 and A:Z = 2.2 : 1 are not whole number ratios.</span>

3 0
3 years ago
(i) 1s 2 2s 2 2p 6 3s 1 (ii) 1s 2 2s 2 2p 6 3s 2 (iii) 1s 2 2s 2 2p 6 3s 2 3p 1 (iv) 1s 2 2s 2 2p 6 3s 2 3p 4 (v) 1s 2 2s 2 2p 6
Marizza181 [45]

Answer:

 (V) 1s 2 2s 2 2p 6 3s 2 3p 5

Explanation:

Electron Affinity can be defined as the energy associated with a neutral atom, when an electron is added to form a negative ion.

1s 2 2s 2 2p 6 3s 2 3p 5 , is the electronic configuration of Chlorine.

The electron affinity is positive because it is an exorthermic reaction, meaning that, energy was released during the addition of an electron to the atom.

Cl (g)  +  e-   ------->  Cl- (g)    = -349KJ/mol

5 0
3 years ago
A second-order reaction has a rate law: rate = k[a]2, where k = 0.150 m−1s−1. If the initial concentration of a is 0.250 m, what
Cerrena [4.2K]

Rate law for the given 2nd order reaction is:

Rate = k[a]2

Given data:

rate constant k = 0.150 m-1s-1

initial concentration, [a] = 0.250 M

reaction time, t = 5.00 min = 5.00 min * 60 s/s = 300 s

To determine:

Concentration at time t = 300 s i.e. [a]_{t}

Calculations:

The second order rate equation is:

1/[a]_{t} = kt +1/[a]

substituting for k,t and [a] we get:

1/[a]t = 0.150 M-1s-1 * 300 s + 1/[0.250]M

1/[a]t = 49 M-1

[a]t = 1/49 M-1 = 0.0204 M

Hence the concentration of 'a' after t = 5min is 0.020 M



7 0
3 years ago
Other questions:
  • Write the complete and balanced chemical equation for this precipitation reaction. feso4(aq)+ba(oh)2(aq)→
    6·1 answer
  • Students working in lab accidentally spilled 17 l of 3.0 m h2so4 solution. they find a large container of acid neutralizer that
    5·1 answer
  • Define mechanical energy. Using the example of the pendulum, explain how kinetic and potential energy relate to the mechanical e
    13·1 answer
  • Which acid could not be prepared by treating a Grignard reagent with CO2?
    5·1 answer
  • Example of false solutions and true solutions <br>​
    13·1 answer
  • HELP<br> ME<br> PLEASE!!!!!!!!!!
    14·2 answers
  • Using the information provided in the chart determine which of these would have the highest pOH level? A) urine B) toothpaste C)
    11·1 answer
  • How many atoms are present in a sample of Potassium (K) weighing 33.49g?
    8·1 answer
  • What are some of the global effects of a volcanic eruption?​
    6·2 answers
  • I am named after the Russian scientist who organized the periodic table by atomic mass. Who am I?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!