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
strojnjashka [21]
2 years ago
11

You are presented with a mystery as part of your practical experiment. You have a solution of Pb(NO3)2

Chemistry
1 answer:
shusha [124]2 years ago
7 0
Ho123 right I’m sorry of I’m wrong
You might be interested in
What are the respective concentrations (m) of fe3+ and i- afforded by dissolving 0.200 mol fei3 in water and diluting to 725 ml?
Natalka [10]

Molarity = moles / liter of solution

Given, Moles of Fe³⁺ = 0.200

Volume of solution = 725 ml = 0.725 L

Conversion factor: 1000 ml = 1L

Molarity = 0.200 / 0.725 L = 0.275 M

The dissociation of Fel₃ in water is ad follows:

Fel₃ → Fe³⁺ + 3l⁻  

1 mole of Fel₃ gives 1 mole of Fe³⁺ ions  and 3 moles of l⁻  

Since the solution is 0.275 M of Fel₃, so there are 0.275 M of Fe³⁺ ions,

and (3 x 0.275 M) = 0.825 M of l⁻ ions.

7 0
3 years ago
Where does the energy to form the peptide bond between two amino acids come from?
spin [16.1K]
The energy to form a peptide bond comes from our food. Our cells go through cellular respiration, which is a process that converts the complex foods molecules into ATP (the energy storing molecule ). With that ATP stored is possible to use to form the peptide bond.


5 0
3 years ago
Using chemical equation to find moles of product from moles of reactant
Zolol [24]

Answer:

0.21 mole of C8H18.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

2C8H18 + 25O2 —> 16CO2 + 18H2O

Next, we shall determine the number of mole of C8H18 that reacted and the number of mole water (H2O) produced from the balanced equation.

This is illustrated below:

From the balanced equation above,

2 moles of C8H18 reacted to produce 18 moles of H2O.

Finally, we shall determine the number of mole C8H18 needed to produce 1.90 moles of H2O.

This can be obtained as follow:

From the balanced equation above,

2 moles of C8H18 reacted to produce 18 moles of H2O.

Therefore, Xmol of C8H18 will react to produce 1.90 moles of H2O i.e

Xmol of C8H18 = (2 × 1.90)/18

Xmol of C8H18 = 0.21 mole

Thus, 0.21 mole of C8H18 is needed for the reaction.

5 0
3 years ago
How many molecules are in 15.0 g of oxygen gas (O2)?
frosja888 [35]

Answer:

2.82*10^23

Explanation:

please see attached for work!

3 0
2 years ago
How to first ionization energies vary within groups and across periods
trapecia [35]

Answer:

Ionisation energy increases along a period but decreases down a group

Explanation:

As you go along the period, the amount of protons in the nuclear increases. This causes nuclear attraction to increase meaning the attraction between the protons and the electrons is higher. This causes the electrons to be held more tightly to the nucleus meaning they are harder to remove. As well as that, the shielding stays the same along a period since the electrons are being added to the same shell, just different orbitals. Overall this makes it harder to remove an electron as you go along a period causing the ionisation energy to increase along a period.

On the other hand when you go down a group, the atomic radius increases. This is because the electrons are added to new shells which are further away from the nucleus, this also causes shielding to increase as there are more shells. This means the outer electrons being removed are held less tightly by the protons in the nucleus meaning they are easier to remove. This means that the ionisation energy decrease down a group.

8 0
3 years ago
Other questions:
  • Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that _____.
    7·2 answers
  • Which statement is true about crystal lattice energy?
    8·2 answers
  • Convection currents or wind in the atmosphere
    14·1 answer
  • what can we tell about an unknown substance based on its properties. Its science btw, i couldnt find the science subject
    5·1 answer
  • Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star
    5·2 answers
  • Which contribution added to Rutherford's discovery of a positive nucleus?
    7·2 answers
  • At a particular temperature, 12.0 moles of so3 is placed into a 3.0-l rigid container, and the so3 dissociates by the reaction 2
    15·1 answer
  • Classify the substances according to the strongest solute-solvent interaction that will occur between the given substances and w
    10·1 answer
  • What is the name of Na
    12·1 answer
  • Which element is the most<br> reactive element in group one of the periodic<br> table
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!