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
andrew11 [14]
3 years ago
7

Do you agree or disagree with the following statement:

Chemistry
1 answer:
Anarel [89]3 years ago
5 0

Answer:

Agree

Explanation:

Theories are refined and then become laws and laws are somehow more important than theories. In science actually what a law is, is a descriptive generalization. So we talk about the laws of thermodynamics that tell you about heat under different circumstances.

You might be interested in
Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for dental and orthopedic use, can be
Sphinxa [80]

Answer:

P_4_{(I)}+5O_2_{(g)}+6H_2O_{(l)}\rightarrow +4H_3PO_4_{(l)}

Explanation:

The first step is:

P_4_{(I)}+5O_2_{(g)}\rightarrow 2P_2O_5_{(g)}

Second step is:

P_2O_5_{(g)}+3H_2O_{(l)}\rightarrow 2H_3PO_4_{(l)}

Multiplying second step by 2, and adding both the steps, we get that:

P_4_{(I)}+5O_2_{(g)}+2P_2O_5_{(g)}+6H_2O_{(l)}\rightarrow 2P_2O_5_{(g)}+4H_3PO_4_{(l)}

Cancelling common species, we get that:

P_4_{(l)}+5O_2_{(g)}+6H_2O_{(l)}\rightarrow +4H_3PO_4_{(l)}

6 0
4 years ago
Which type of cell does mitosis produces?
frosja888 [35]

Answer:

animal and plant cells

5 0
4 years ago
Read 2 more answers
A sample of black mineral hematite, an oxide of iron found in many iron ores, contains 34.97g of iron and 15.03g of oxygen. what
Vanyuwa [196]

The empirical formula : Fe₂O₃

<h3>Further explanation</h3>

Given

34.97g of Iron

15.03g of Oxygen

Required

The empirical formula

Solution

Mol ratio :

Fe(Iron) : 34.97 g : 56 g/mol = 0.624

O(Oxygen) : 15.03 g : 16 g/mol = 0.939

Divide by 0.624 :

Fe : O = 1 : 1.5

Fe : O = 2 : 3

8 0
3 years ago
Please please help !!!
lubasha [3.4K]

Answer:

They don't go below 60

Explanation:

7 0
3 years ago
The equation for photon energy, E, is E=hc/λ
Leni [432]

Answer:

The wavelength, λ, of a photon that has an energy of E = 3.92×10⁻¹⁹ J is 5.054*10⁻⁷ m

Explanation:

The wavelength is defined for every periodic wave, that is, for the type of wave that repeats itself with exactly the same shape every given interval of time. It is the distance between two points from which the wave repeats.

Radiation is the emission, propagation and transfer of energy in any medium in the form of electromagnetic waves or particles.

The energy carried by electromagnetic radiation travels by waves. This energy is transmitted grouped in small "quanta" of energy called photons. The energy of a photon is measured in Joules (J) and is

E=\frac{h*c}{wavelength}

Being:

  • E=3.92×10⁻¹⁹ J
  • h= 6.626×10⁻³⁴ J⋅s (Planck's constant)
  • c = 2.99×10⁸ m/s (the speed of light)
  • wavelength=?

and replacing:

3.92*10^{-19}J =\frac{6.626*10^{-34}J.s*2.99*10^{8}\frac{m}{s}   }{wavelength}

you get:

wavelength =\frac{6.626*10^{-34}J.s*2.99*10^{8}\frac{m}{s}   }{3.92*10^{-19}J}

wavelength= 5.054*10⁻⁷ m

<u><em>The wavelength, λ, of a photon that has an energy of E = 3.92×10⁻¹⁹ J is 5.054*10⁻⁷ m</em></u>

6 0
3 years ago
Other questions:
  • An atom that contains six protons six neutrons and six electrons has a mass of approximately
    7·1 answer
  • How many moles (of molecules or formula units) are in each sample? 79.34 g cf2cl2?
    6·1 answer
  • 8. Converting Units The volumes in your data are in millimeters, which are equivalent to cubic centimeters, cm3. But your areas
    14·1 answer
  • According to the graph, what relationship does gross domestic product have with the ecological footprint of a nation?
    9·1 answer
  • Calculate the hydroxide ion concentration in an aqueous solution that contains 3.50 Ã 10-4 m in hydronium ion
    8·1 answer
  • Whats the main difference between a double replacement reaction and a single replacement
    8·1 answer
  • What makes an object cool down?
    15·1 answer
  • There is 6.4% sales tax on 1,500 television how much tax is owned<br>​
    12·1 answer
  • Which elements do not have a set number of valence electrons?
    5·1 answer
  • What is a hot spot? Must be in your own words ( please hurry)
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!