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
arsen [322]
3 years ago
10

Help me with these questions :)

Chemistry
1 answer:
maxonik [38]3 years ago
3 0

Answer:

1 ) H2O 2) Hydrogen and oxygen 3) Compound

Explanation:

1) To write a chemical formula, you write the number of molecules of an element (2 hydrogen atoms + 1 Oxygen atom, or H2O). The letters represent the element's notation on the periodic table, while the number that follows it represents the number of atoms of that particular element within the compound. If there is no number that follows the letter, there is only one.

2) Letter "H" on the periodic table represents hydrogen, while "O" represents oxygen

3) You can tell that this is a compound because it is made of two or more elements found on the periodic table

You might be interested in
The wavelength of a particular color of violet light is 433 nm. The energy of this wavelength of light is kJ/photon. (109 nm = 1
mash [69]

Answer:

4.59 × 10⁻³⁶ kJ/photon

Explanation:

Step 1: Given and required data

  • Wavelength of the violet light (λ): 433 nm
  • Planck's constant (h): 6.63 × 10⁻³⁴ J.s
  • Speed of light (c): 3.00 × 10⁸ m/s

Step 2: Convert "λ" to meters

We will use the conversion factor 1 m = 10⁹ nm.

433 nm × 1 m/10⁹ nm = 4.33 × 10⁷ m

Step 3: Calculate the energy (E) of the photon

We will use the Planck-Einstein's relation.

E = h × c/λ

E = 6.63 × 10⁻³⁴ J.s × (3.00 × 10⁸ m/s)/4.33 × 10⁷ m

E = 4.59 × 10⁻³³ J = 4.59 × 10⁻³⁶ kJ

5 0
2 years ago
5.0 x 10^24 molecules equal
Ratling [72]
<span>4.999999999999999e</span>+<span>24 this is what i got on the calculator but i dont know if its right.</span>
8 0
2 years ago
The fuel used in many disposable lighters is liquid butane, C4H10. Butane has a molecular weight of 58.1 grams in one mole. How
maks197457 [2]
2iekfjdjabnfwnfuwj ag hbn few nbfnbfb
4 0
3 years ago
Read 2 more answers
¿cómo se ionizan los ácidos y las bases en medio acuoso?
Vadim26 [7]

Answer:

Ei

Explanation:

De acordo com a teoria de Arrhenius, os ácidos são os compostos que se dissociam no meio aquoso para gerar os íons hidrogênio H + no meio aquoso.

4 0
3 years ago
Among the gases listed, which would have the fastest rate of effusion?
Delvig [45]
"CH4" is the one gas among the choices given in the question that <span>would have the fastest rate of effusion. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that has actually come to your great help.</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • The standard gibbs free energy of formation of ___ is zero: 1. h2o(l) 2. na(s) 3. h2 (g)
    12·1 answer
  • Mirrror metal and wood are the exaple
    11·1 answer
  • Is mesosphere is where most of meteoroids begin to burn?
    7·2 answers
  • What are steps to solving stoichiomerty problems?
    9·1 answer
  • Need help with these questions for chemistry please I need the answers fast
    6·2 answers
  • A 425.00-gram sample of a compound decomposes into 196.01 grams of carbon, 41.14 grams of hydrogen, 130.56 grams of oxygen, and
    9·1 answer
  • Will mark brainliest if correct!!
    15·1 answer
  • Which of the following is NOT a way that people can reduce, reuse and recycle\
    10·2 answers
  • Which of thes statements about heating up land and water is true
    9·2 answers
  • Which element has a mass number of 32?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!