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
Blizzard [7]
3 years ago
14

What element am I?

Chemistry
1 answer:
Serga [27]3 years ago
4 0

Answer:

H- hydrogen

Explanation: Hydrogen is in the first group meaning that it only has 1 valence electron and 1 energy level

You might be interested in
Which is a mixture that will separate naturally?
Kamila [148]

it would be b hope i helped

3 0
3 years ago
Read 2 more answers
The voltage for the following cell is +0.731 V. Find Kb for the organic base RNH2. Use EscE 0.241V.
tino4ka555 [31]

Complete Question

The complete question is shown on the first uploaded image  

Answer:

The  value is   K_b  =   1.89 *10^{-6}

Explanation:

From the question we are told that

   The  voltage of the cell is  V  =  0.731 \  V

Generally K_b is mathematically represented as  

           K_b  =  \frac{K_w }{ K_a }

Where  K_w  is the equilibrium constant for this auto-ionization of water with a value  K_w  =  1.0 *10^{-14}

Generally the E_{cell} is mathematically represented as

       E_{cell} =  V  -  E_{SCE}

=>     E_{cell} =  0.731 - 0.241

=>       E_{cell} =   0.49 V

This  E_{cell} is mathematically represented as

             E_{cell} =  \frac{0.0592}{n} *  log K_a

Where n is the number of moles which in this question is  n = 1

         So  

         0.490 =  \frac{0.0592}{1}  *  log K_a

=>      K_a  =  5.30*10^{-9}

So  

     K_b  =  \frac{ K_w}{ K_a}

=>   K_b  =  \frac{1.0 *10^{-14}}{ 5.30*10^{-9}}

=>    K_b  =   1.89 *10^{-6}

5 0
3 years ago
What are some chemacial changes in your school?
Oksanka [162]
Putting glue on something, because once it is set in you cannot change it back.
6 0
4 years ago
Which compound(s) contain the most hydrogen atoms per molecule or formula unit? hydrogen selenide ammonium bromide strontium dih
igomit [66]

The answer is strontium dihydrogen phosphate

That is strontium dihydrogen phosphate, is the compound containing the most hydrogen atoms per molecule or formula unit.

The formulas of the following compounds are as follows:

Hydrogen selenide H₂Se

Ammonium bromide NH₃Br  

Strontium dihydrogen phosphate  Sr(H₂PO4)₂

Sodium bicarbonate  NaHCO₃

As it can be seen from the formula of strontium dihydrogen phosphate  Sr(H₂PO4)₂ , that it contains the most hydrogen atoms per molecule or formula unit.


3 0
3 years ago
Archer is a soil scientist and needs to examine a bacteria sample. He wants to be able to change his magnification with differen
koban [17]

Answer:

C. Dissecting microscope

Explanation:

It is trying to see the surface

3 0
3 years ago
Other questions:
  • What forms when iron-53 decays?
    12·2 answers
  • Why is the air pressure greater on the mountain top
    12·1 answer
  • A 20.0 mL sample of glycerol has a mass of 25.2 grams. What is the mass of a 57 mL sample of glycerol?
    13·2 answers
  • Which determines the state of matter for any material? A. the size of the atoms B. the hardness of the material C. the behavior
    12·2 answers
  • What is the mass number of Carbon–12, which has 6 protons and 6 neutrons?
    8·1 answer
  • Density Calculations
    11·1 answer
  • Oxygen and chlorine gas are mixed in a container with partial pressures of 52 kPa and 60 kPa, respectively. What is the total pr
    6·2 answers
  • What’s different about ionic bonding and covalent bonding ? (Help I need the answer ASAP)
    7·1 answer
  • How many moles of H3(PO4) will react with 3.45 moles of Zn in the following
    8·1 answer
  • Which of these actions would the cerebellum be in charge of?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!