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
IRINA_888 [86]
2 years ago
13

As more discovers were made, whittaker proposed classifying orginsims into five _____

Chemistry
1 answer:
guapka [62]2 years ago
8 0

Answer:

As more discovers were made, Whittaker proposed classifying organisms into five Kingdoms

You might be interested in
Calculate the mass of Na2O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reacti
e-lub [12.9K]

Answer:

The mass of Na₂O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reaction is 5.39 grams.

Explanation:

You know  the balanced reaction:

4 NA + O₂ ⟶ 2 Na₂O

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) react and are produced:

  • Na: 4 moles
  • O₂: 1 mole
  • Na₂O: 2 moles

Being:

  • Na: 23 g/ole
  • O: 16 g/mole

the molar mass of the compounds participating in the reaction is:

  • Na: 23 g/mole
  • O₂: 2*16 g/mole= 32 g/mole
  • Na₂O: 2*23 g/mole +16 g/mole=  62 g/mole

Then by stoichiometry of the reaction they react and are produced:

  • Na: 4 moles* 23 g/mole= 92 g
  • O₂: 1 mole*32  g/mole= 32 g
  • Na₂O: 2 moles* 62 g/mole= 124 g

Then you can apply the following rule of three: if 92 grams of Na produce 124 grams of Na₂O, 4 grams of Na, how much mass of Na₂O does it produce?

massofNa_{2}O =\frac{4 grams of Na*124 gramsofNa_{2}O }{92 grams of Na}

mass of Na₂O=5.39 g

<em><u>The mass of Na₂O that can be produced by the chemical reaction of 4.0 grams of sodium with excess oxygen in the reaction is 5.39 grams.</u></em>

8 0
3 years ago
6 CO 2 + 12 H 2 O C 6 H 12 O 6 + 6 H 2 O + 6 O 2
adelina 88 [10]
During photosynthesis plant release
<span>C 6 H 12 O 6 + 6 H 2 O + 6 O 2
the gas is 6O2
</span>
3 0
3 years ago
Acetylene, c2h2, has a standard enthalpy of formation, δh° = 226.7 kj/mol, and a standard entropy change for its formation from
VLD [36.1K]
ΔG⁰ = ΔH⁰ - T ΔS⁰

ΔG⁰ : Standard free energy of formation of acetylene

ΔH⁰ : Standard enthalpy of formation (226.7 kJ/mol)

ΔS⁰ : Standard entropy change (58.8 J / K. mol)

T : Temperature 25°C = 298 K (room temperature)

ΔG⁰ = 226.7 - (298 x 58.8 x 10⁻³) = 209.2 kJ /mol
5 0
3 years ago
Read 2 more answers
How to find the Ka of an acid?
bonufazy [111]
We know that acids have a pH of under 7. 

We also need to:
Set up an ICE table for the chemical reaction.  Solve for the concentration of H3O+ using the equation for pH  Use the concentration of H3O+ to solve for the concentrations of the other products and reactants.
7 0
3 years ago
Which statement describes an electron?​
GarryVolchara [31]

what are the options?
8 0
3 years ago
Read 3 more answers
Other questions:
  • Predict the mass of iron (III) sulfide produced when 3.0 g of iron filings react completely with 2.5 g of yellow sulfur solid, S
    14·2 answers
  • How may sun are in earth
    15·1 answer
  • What is the answer??
    15·1 answer
  • What is the purpose of the lateral line
    9·1 answer
  • How many grams are in 6.00 moles of NaCl?
    12·2 answers
  • What is the approximate mass of one mole of zinc?
    10·1 answer
  • What type of energy uses turbines
    7·1 answer
  • The pressure in a cylinder of nitrogen continuously decreases as a gas is released from it. On the other hand, a cylinder of pro
    8·1 answer
  • The pictures showed an organ system in the human body
    12·1 answer
  • Correct way for calculating atomic mass
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!