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
Sav [38]
4 years ago
12

How many moles are in 2.3 grams of phosphorus

Chemistry
1 answer:
dmitriy555 [2]4 years ago
8 0
Molar mass of  phosphorus (p) : 30.9 g/mol

1 mole P ----------- 30.9 g
x mole -------------- 2.3 g

30.9 * x = 2.3* 1

30.9 x = 2.3

x = 2.3 / 30.9

x = 0.07 moles

You might be interested in
Help would be much appreciated, I'm being timed<br> I'll mark brainliest !!
Vitek1552 [10]
Group 17

Please brainliesttt
7 0
3 years ago
How are genes and alleles related
Montano1993 [528]
Alleles are inside a gene and genes are made up by alleles. Also, a gene is DNA, so the allele is like piece of DNA inside a gene<span>.

Hope this helps:)
</span>
7 0
3 years ago
Pls help me.<br>.<br>.<br>click the pic​
uranmaximum [27]

Answer:

Gas - Fuel

Ethanol - Fuel

Acetone - Cleaner

LPG - Fuel

Kerosene - Fuel

Acetic Acid - Food

Explanation:

Source: Trust me bro!

GL, have a good one.

8 0
2 years ago
The absorbance (????)(A) of a solution is defined as ????=log10(????0????) A=log10⁡(I0I) where ????0I0 is the incident‑light int
bulgar [2K]

Answer:

The absorbance of the myoglobin solution across a 1 cm path is 0.84.

Explanation:

Beer-Lambert's law :

Formula used :

A=\epsilon \times c\times l

A=\log \frac{I_o}{I}

\log \frac{I_o}{I}=\epsilon \times c\times l

where,

A = absorbance of solution

c = concentration of solution

\epsilon = Molar absorption coefficient

l = path length

I_o = incident light

I = transmitted light

Given :

l = 1 cm, c = 1 mg/mL ,\epsilon = 15,000 M^{-1}cm^{-1}

Molar mass of myoglobin = 17.8 kDa = 17.8 kg/mol=17800 g/mol

(1 Da = 1 g/mol)

c = 1 mg /mL = {1mg /mL}{\text{Molar mass of myoglobin}}

c = \frac{1 mg/mL}{ 17800 g/mol} = 5.6179\times 10^{-5} mol/L

1 mg = 0.001 g, 1 mL = 0.001 L

A= 15,000 M^{-1}cm^{-1}\times 5.6179\times 10^{-5} mol/L\times 1 cm

A=0.8426 \approx 0.84

The absorbance of the myoglobin solution across a 1 cm path is 0.84.

5 0
4 years ago
The diagram shows Earth's position in its orbit around the Sun at the beginning of each season
alexdok [17]

Answer: the answer is option 3. C

Explanation:

8 0
3 years ago
Other questions:
  • Honors Stoichiometry Activity Worksheet
    14·1 answer
  • What mineral is the hardest known substance in nature?
    11·2 answers
  • Help me out please due tomorrow
    9·2 answers
  • Write the structural formula for m-chlorophenyl ethyl ether.
    14·1 answer
  • What is the osmotic pressure, in torr, of a 3.00% solution of NaCl in water when the temperature of the solution is 45 ºC? Enter
    14·1 answer
  • De acuerdo con la Ley de la Conservación de la Materia postulada por Lavoisier, ¿cuál ecuación química está balanceada? A C2H5OH
    11·1 answer
  • Caustic soda, NaOH, can be prepared commercially by the reaction of Na2CO3 with slaked lime, Ca(OH)2. How many grams of NaOH can
    9·1 answer
  • A galaxy contains stars, gas, and dust. This matter must be held together or the galaxy will break apart. What is responsible fo
    14·1 answer
  • Please solve this fast pleasee i will make u the brainliest
    12·1 answer
  • How is the process of converting kiwi into plasticware evidence of a chemical reaction?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!