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
EleoNora [17]
3 years ago
13

Help me real quick !!

Chemistry
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

yellow

if not sorry that's though the best answer

Explanation:

You might be interested in
What is the wavelength of light with 2.89 x 10-19 J of energy? (The speed of
Alika [10]

Let's see

\\ \rm\rightarrowtail E=hv

\\ \rm\rightarrowtail E=\dfrac{hc}{\lambda}

  • lambda is wavelength
  • h is Planck constant
  • c is velocity of sound in air
  • E in energy

\\ \rm\rightarrowtail \lambda=\dfrac{hc}{E}

\\ \rm\rightarrowtail \lambda=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{2.89\times 10^{-19}}

\\ \rm\rightarrowtail \lambda=6.878\times 10^{-7}m

\\ \rm\rightarrowtail \lambda=68.8\mu m

3 0
1 year ago
HELP ME PLEASE
Alika [10]

Answer: it is a good conductor of electriciy tht is what wires are made of and it is a good conductor of heat so it will be able to handle the heat from the electricity

Explanation:

7 0
3 years ago
Read 2 more answers
52. A proton is a subatomic particle that has a
kondaur [170]

Answer:

positive charge

Explanation:

Protons are positively charged

3 0
2 years ago
Hydrofluoric acid and Water react to form fluoride anion and hydronium cation, like this HF(aq) + H_2O(l) rightarrow F(aq) + H_3
maksim [4K]

Answer:

Kc = 1.09x10⁻⁴

Explanation:

<em>HF = 1.62g</em>

<em>H₂O = 516g</em>

<em>F⁻ = 0.163g</em>

<em>H₃O⁺ = 0.110g</em>

<em />

To solve this question we need to find the moles of each reactant in order to solve the molar concentration of each reactan and replacing in the Kc expression. For the reaction, the Kc is:

Kc = [H₃O⁺] [F⁻] / [HF]

<em>Because Kc is defined as the ratio between concentrations of products over reactants powered to its reaction coefficient. Pure liquids as water are not taken into account in Kc expression:</em>

<em />

[H₃O⁺] = 0.110g * (1mol /19.01g) = 0.00579moles / 5.6L = 1.03x10⁻³M

[F⁻] = 0.163g * (1mol /19.0g) = 0.00858moles / 5.6L = 1.53x10⁻³M

[HF] = 1.62g * (1mol /20g) = 0.081moles / 5.6L = 0.0145M

Kc = [1.03x10⁻³M] [1.53x10⁻³M] / [0.0145M]

<h3>Kc = 1.09x10⁻⁴</h3>
7 0
3 years ago
The arrows represent tge movement of which substances
11111nata11111 [884]
The arrows represent the movement of starting substances
6 0
3 years ago
Other questions:
  • What elements fill the d orbitals on the periodic table?
    11·1 answer
  • How many moles are 6.022(10^23) atoms of sodium
    13·1 answer
  • An inner and an outer membrane are characteristic of which organelle? (site 1)
    7·1 answer
  • What changes are observed on heat capacity ratio and output temperatures by increasing the specific heat capacity of both the fl
    7·1 answer
  • Which is always the first step in dealing with an accident in the lab?
    5·2 answers
  • A temperature of –25°C is equivalent to: Question 2 options: 25 K. 248 K. –25 K. 298 K.\
    9·1 answer
  • How much of a sample remains after five half-lives have occurred?
    7·1 answer
  • Aerobic respiration is the process in which
    7·1 answer
  • Why is knowing the density of water important to us? Give a reasonable answer
    10·1 answer
  • What is produced during the replacement reaction of ba(no3)2 and na2so4? 2bana 2no3so4 2nano3 baso4 nano3 baso4 bana2 (no3)2so4
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!