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
Lana71 [14]
2 years ago
6

What is the basic unit of chemistry?

Chemistry
2 answers:
Luba_88 [7]2 years ago
7 0
An atom hopefully this helps
ololo11 [35]2 years ago
7 0
An atom is the basic unit of chemistry
You might be interested in
Submit At 25.0 C, a 10.00 L vessel is filled with 5.00 atm of Gas A and 7.89 atm of Gas B. What is the mole fraction of Gas B?
Firlakuza [10]

Answer:

the mole fraction of Gas B is xB= 0.612 (61.2%)

Explanation:

Assuming ideal gas behaviour of A and B, then

pA*V=nA*R*T

pB*V=nB*R*T

where

V= volume = 10 L

T= temperature= 25°C= 298 K

pA and pB= partial pressures of A and B respectively = 5 atm and 7.89 atm

R= ideal gas constant = 0.082 atm*L/(mol*K)

therefore

nA= (pA*V)/(R*T) = 5 atm* 10 L /(0.082 atm*L/(mol*K) * 298 K) = 2.04 mole

nB= (pB*V)/(R*T) = 7.89 atm* 10 L /(0.082 atm*L/(mol*K) * 298 K) = 3.22 mole

therefore the total number of moles is

n = nA +nB= 2.04 mole +  3.22 mole = 5.26 mole

the mole fraction of Gas B is then

xB= nB/n= 3.22 mole/5.26 mole = 0.612

xB= 0.612

Note

another way to obtain it is through Dalton's law

P=pB*xB , P = pA+pB → xB = pB/(pA+pB) = 7.69 atm/( 5 atm + 7.89 atm) = 0.612

5 0
3 years ago
Equation Given : Al^(3+) + Na3PO4 ==> 3Na^+ + AlPO4
Helga [31]

1 mols of Aluminium ion forms 1 mol aluminium phosphate

Molar mass of AlPO_4

  • 27+31+16(4)
  • 58+48
  • 106u

Moles of AlPO_4

  • 61µg/106
  • 0.000061/106
  • 5.75×10^{-7}
  • 57.5µmol

Moles of Al3+=57.5µmol

3 0
2 years ago
How much does it take to make a science explosion?
melomori [17]

Answer:

Explanation:

D I think I am dumb

sorry

6 0
3 years ago
Read 2 more answers
Find the pH of 8.4x10^-8 M HCl. Report the answer to the hundredths place.
Hunter-Best [27]

Answer:

pH = 7.08

Explanation:

HCl ---------> H^+ + Cl^-

It's an acid, we are using this formula

pH = -log [H]^+

H^+ = 8.4 * 10^-8

pH = - log [8.4 * 10^-8]

It can also be solved as

-log 8.4-(-8log 10)

-0.924-(-8×1)

-0.924+8

7.076

To the nearest hundredth

pH = 7.08

8 0
3 years ago
Explain atoms contain positively charge protons and negatively charge electrons. why does an ordinary atom have no charge?
tatiyna
An ordinary atom is balanced for instance, lithium has 3 protons and 3 electrons the positively charged proton cancels the negatively charged electron.


THINK math   plus 3 and negative 3 = 0 neutral 
3 0
3 years ago
Other questions:
  • You wish to measure the iron content of the well water on the new property you are about to buy. You prepare a reference standar
    13·1 answer
  • Neutrons are found in the nucleus and separate the other particles so that the strong force can hold the nucleus together. Which
    5·2 answers
  • scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossil
    10·1 answer
  • The greater the [H*], the stronger the acid.<br> True<br> False
    11·1 answer
  • Which substances will make a salt when combined? (2 points) Vinegar and antacids Soda and wine Soap and ammonia Fertilizer and d
    6·2 answers
  • 80cm^3 of oxygen gas diffussed through a porous holebin 50 seconds how long will it take 120cm^3 of nitrogen (iv) oxide to diffu
    14·1 answer
  • Which of the scientists responsible for cell theory would be the most likely to write a book titled Cells Come from Cells?
    11·2 answers
  • Convert 3.88 g/mL to units of mg/L.
    6·1 answer
  • Which substance is the most common type of SOLVENT?
    7·2 answers
  • Definition<br> a visual representation of data that uses unconnected plotted points​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!