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
sveta [45]
3 years ago
9

What conversion factor would you use to convert grams to kilograms?

Chemistry
2 answers:
Natalija [7]3 years ago
4 0

Answer:

1kg=1000g

Explanation:

marusya05 [52]3 years ago
3 0
Since it’s 3 units over, you have to put 3 zeros behind the 1 to make it grams. So it would be 1kg is equal to 1000 grams. Or 1kg=1000g
You might be interested in
Predict which of the substances, NH3, N2, CH2Cl2, Cl2, CCl4 has
gulaghasi [49]

Answer:

djsjwjwjdjxjdbs djwuqidx8diw d xbd

6 0
3 years ago
What is the mass of one gram of calcium?
Anvisha [2.4K]

pls follow me

Explanation:

The mass of one atom of calcium is the same as the molar mass of the calcium. Also, the atomic mass of calcium is 40.078 g/mol.

8 0
2 years ago
What group will group 16 most likely bond with?
ikadub [295]
They will most likey group with the second group. Since they have 6 electrons and want to have a full outer shell so therefore would group with the second group.
7 0
3 years ago
What is the term for the amount of salts in water? Evaporation
gtnhenbr [62]

Answer:

B.Salinity

I believe

Explanation:

report if wrong

8 0
2 years ago
Read 2 more answers
100.00 mL of 0.15 M nitrous acid (HNO2) are titrated with a 0.15 M NaOH solution. (a) Calculate the pH for the initial solution.
wolverine [178]

Answer:

a. pH = 2.04

b. pH = 3.85

c. pH = 8.06

d. pH = 11.56

Explanation:

The nitrous acid is a weak acid (Ka = 5.6x10⁻⁴) that reacts with NaOH as follows:

HNO₂ + NaOH → NaNO₂(aq) + H₂O(l)

a. At the beginning there is just a solution of 0.12M HNO₂. As Ka is:

Ka = [H⁺] [NO₂⁻] / [HNO₂]

Where [H⁺] and [NO₂⁻] ions comes from the same equilibrium ([H⁺] = [NO₂⁻] = X):

5.6x10⁻⁴ = X² / 0.15M

8.4x10⁻⁵ = X²

X = [H⁺] = 9.165x10⁻³M

As pH = -log [H⁺]

<h3>pH = 2.04</h3><h3 />

b. At this point we have HNO₂ and NaNO₂ (The weak acid and the conjugate base), a buffer. The pH of a buffer is obtained using H-H equation:

pH = pKa + log [NaNO₂] / [HNO₂]

<em>Where pH is the pH of the buffer,</em>

<em>pKa is -log Ka = 3.25</em>

<em>And [NaNO₂] [HNO₂] could be taken as the moles of each compound.</em>

<em />

The initial moles of HNO₂ are:

0.100L * (0.15mol / L) = 0.015moles

The moles of base added are:

0.0800L * (0.15mol / L) = 0.012moles

The moles of base added = Moles of NaNO₂ produced = 0.012moles.

And the moles of HNO₂ that remains are:

0.015moles - 0.012moles = 0.003moles

Replacing in H-H equation:

pH = 3.25 + log [0.012moles] / [0.003moles]

<h3>pH = 3.85</h3><h3 />

c. At equivalence point all HNO2 reacts producing NaNO₂. The volume added of NaOH must be 100mL. That means the concentration of the NaNO₂ is:

0.15M / 2 = 0.075M

The NaNO₂ is in equilibrium with water as follows:

NaNO₂(aq) + H₂O(l) ⇄ HNO₂(aq) + OH⁻(aq) + Na⁺

The equilibrium constant, kb, is:

Kb = Kw/Ka = 1x10⁻¹⁴ / 5.6x10⁻⁴ = 1.79x10⁻¹¹ = [OH⁻] [HNO₂] / [NaNO₂]

<em>Where [OH⁻] = [HNO₂] = x</em>

<em>[NaNO₂] = 0.075M</em>

<em />

1.79x10⁻¹¹ = [X] [X] / [0.075M]

1.34x10⁻¹² = X²

X = 1.16x10⁻⁶M = [OH⁻]

pOH = -log [OH-] = 5.94

pH = 14-pOH

<h3>pH = 8.06</h3><h3 />

d. At this point, 5mL of NaOH are added in excess, the moles are:

5mL = 5x10⁻³L * (0.15mol / L) =7.5x10⁻⁴moles NaOH

In 100mL + 105mL = 205mL = 0.205L. [NaOH] = 7.5x10⁻⁴moles NaOH / 0.205L =

3.66x10⁻³M = [OH⁻]

pOH = 2.44

pH = 14 - pOH

<h3>pH = 11.56</h3>
5 0
2 years ago
Other questions:
  • Which of the following conditions occurs as a liquid freezes​
    8·2 answers
  • If the same quantity of heat is added to both a 2-liter and a 4-liter container of water, the temperature change for water in th
    11·1 answer
  • Nohdjhsdfkadfjdfaksdfhjdkjfadfadf
    12·1 answer
  • How does increasing the concentration of a nonvolatile solute in water affect the following properties:Vapor pressure: Decreases
    5·1 answer
  • What happens during a chemical change??
    5·2 answers
  • What is consciousness? ...
    10·1 answer
  • Which products would form if chlorine gas was bubbled through a solution of sodium bromide?
    10·2 answers
  • Nitrogen and hydrogen react to form ammonia, like this:N2(g)+3H2(g)→2NH3(g)Use this chemical equation to answer the questions be
    10·1 answer
  • 1 draw the 1st 20 Element
    5·1 answer
  • ___ CH3CH2OH + ___O2 &gt; ___CO2 + ___H2O
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!