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
tresset_1 [31]
3 years ago
12

MATH AND SCIENCE

Chemistry
1 answer:
Artyom0805 [142]3 years ago
8 0

Answer:

Explanation:

Formula

% = (dicots/angiosperms) * 100

Givens

angiosperms (total) = 260000

Dicots                      = 195000

Solution

% = (195000/260000) * 100

% = 0.75 * 100

Answer: % = 75% are dicots

You might be interested in
Any substance that does not ionize when dissolved or melted is called <br>​
Vikki [24]
The answer is nonelectrolyte
7 0
4 years ago
Which phrase describes the molecular structure and properties of two solid forms of carbon, diamond and graphite?(1) the same mo
vagabundo [1.1K]
I think the answer is (4) different molecular structures and different properties. Both structure are crystal. The structure of graphite is organized in layers. And structure of diamond is a strong network of atoms. Also due to the different structures, they have different properties.
4 0
4 years ago
3. Calculate the atomic mass of oxygen if the three common isotopes of oxygen have masses
snow_tiger [21]

Answer:

15.999 amu

Explanation:

15.999 amu

Explanation:

From the question given above, the following data were:

Isotope A:

Mass of A 15.995 amu

Abundance (A%) = 99.759%

Isotope B:

Mass of B = 16.995 amu

Abundance (B%) = 0.037%

Isotope C:

Mass of C = 17.999 amu

Abundance (C%) = 0.204%

Atomic mass of Oxygen =.?

The atomic mass of oxygen can be calculated by using the following formula:

Atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]

Atomic mass = [(15.995 × 99.759)/100] + [(16.995 × 0.037)/100] + [(17.999 × 0.204)/100]

Atomic mass = 15.956 + 0.006 + 0.037

Atomic mass = 15.999 amu

Therefore, the atomic mass of oxygen is 15.999 amu

5 0
3 years ago
Does Helium Have Chemical Properties? Helium doesn't react with other substances. Is it still accurate to say that helium has no
Greeley [361]
No, it is not accurate: Chemical properties of helium - Health effects ofhelium. Gaseous chemical element, symbol: He, atomic number: 2 and atomic weight 4,0026 g/mol. Helium is one of the noble gases of group O in the periodic table.
7 0
3 years ago
5.00 g of solid silver nitrate AgNO3 is added to 100ml of deionized H2O to make a substance that can test the presence of chlori
Mars2501 [29]

Answer:

The solvent is deionised water

The solute is AgNO3

The solution is [Ag(aq) + NO3(aq)-]

Explanation:

  • This is because it contains no ions which would otherwise react with AgNO3 thus AgNO3 just disolves releasing free Ag+ and NO3- . The resiltant solution can test for Cl presence
  • AgNO3 is a soluble salt in water thus disolves in water
  • AgNO3 disolves releasing free ions which can be called ionisation

6 0
3 years ago
Other questions:
  • Is a humidifier putting moisture in the air a physical change
    6·1 answer
  • Explain what the chloroplast and the cell wall do to keep a plant cell alive and stable.
    12·1 answer
  • Mick has a glass of water. Which of the following tools could he use to measure the volume of water he has in the glass? A. a sp
    5·1 answer
  • A compound contains 43.3% sodium,11.3% carbon,and 45.3% oxygen. Calculate its empirical formula
    15·2 answers
  • Why doesn’t a stable ecosystem have more tertiary consumers than primary consumers?
    5·1 answer
  • Convert (76)10 into Binary.​
    9·1 answer
  • 100 POINTS!!! WILL MARK BRAINLIEST!!!<br> How do you find the moles per gram of an element?
    6·1 answer
  • An aqueous solution of potassium hydroxide is standardized by titration with a 0.187 M solution of nitric acid. If 22.7 mL of ba
    11·1 answer
  • Why is the mitochondrion known as the "power house" of a cell?
    5·1 answer
  • HELP PLEASE FAST 100 POINTS
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!