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
miv72 [106K]
2 years ago
7

Which postulate of daltons atomic model was later changed and why

Chemistry
1 answer:
arlik [135]2 years ago
3 0
atom is indivisible particle and can be subdivided into smaller particles
You might be interested in
A tetraphenyl phosphonium chloride (TPPCl) powder (FW=342.39) is 94.0 percent pure. How many grams are needed to prepare 0.45 L
slega [8]

Answer:

5.41 g

Explanation:

Considering:

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Or,

Moles =Molarity \times {Volume\ of\ the\ solution}

Given :

For tetraphenyl phosphonium chloride :

Molarity = 33.0 mM = 0.033 M (As, 1 mM = 0.001 M)

Volume = 0.45 L

Thus, moles of tetraphenyl phosphonium chloride :

Moles=0.033 \times {0.45}\ moles

Moles of TPPCl = 0.01485 moles

Molar mass of TPPCl = 342.39 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

0.01485\ g= \frac{Mass}{342.39\ g/mol}

Mass of TPPCl = 5.0845 g

Also,

TPPCl is 94.0 % pure.

It means that 94.0 g is present in 100 g of powder

5.0845 g is present in 5.41 g of the powder.

<u>Answer -  5.41 g</u>

5 0
3 years ago
what is the boiling point of a 0.321 m aqueous solution of NaCl. Enter your rounded answer with 3 decimal places.
Ronch [10]

Answer:

I believe the rounded place is 100.333.

3 0
2 years ago
Read 2 more answers
Which phrases describe sedimentary rock? check all that apply.​
yuradex [85]

Answer:

Sedimentary rock, rock formed at or near Earth's surface by the accumulation and lithification of sediment by the precipitation from solution at normal surface temperatures

Explanation:

7 0
2 years ago
Balance the following chemical equation: <br> ___HCO + ___O —&gt; ___H2 + ___CO3
yawa3891 [41]

Answer: 2HCO + 4O → H2 + 2CO3

Explanation: Oxomethyl + Oxygen = Dihydrogen + Carbon Trioxide

Reaction Type: SINGLE REPLACEMENT

***If you found my answer helpful, please give me the brainliest, please give a nice rating, and the thanks ( heart icon :) ***

7 0
2 years ago
Which physical property refers to the temperature at which substance in a solid state transforms to a liquid state?
professor190 [17]
Melting, in which heat of fusion is needed.
6 0
2 years ago
Read 2 more answers
Other questions:
  • (Please answer as quickly as possible for brainliest, thanks :))
    12·2 answers
  • I need help with #4... Chemistry is my worst subject.
    11·1 answer
  • Which of the following fractions can be used in the conversion of 1000 mL to the unit m3? 1L/1ML 1CM^3/1ML 1CM^-3/1ML 1M^3/1L
    14·1 answer
  • ?SiCl4(I) + ?H2O(I) = ?SiO2(S) + ?HCI(aq)​
    12·2 answers
  • Referring back to question 6 above, in the TLC plate on the left the mobile solvent phase was ethyl acetate, in the plate on the
    14·1 answer
  • The sugar deoxyribose is an important component of DNA. Deoxyribose is 44.8% 7.5% H, and 47.7% O by mass. What is the empirical
    5·1 answer
  • 1. which of the following elements is NOT multivalent?
    11·1 answer
  • Na Sa Bant HCL -&gt; 50g Hao pt Soy​
    9·1 answer
  • MgCl2 + NaOH → Mg(OH)2 +Naci<br> Balance
    15·1 answer
  • Under what conditions does the Ideal Gas Law not apply and gases are considered real? Check all that apply. High pressure low pr
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!