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
Misha Larkins [42]
3 years ago
5

I need help on science lol.

Chemistry
2 answers:
Anit [1.1K]3 years ago
6 0

Answer:

yes your right its is 4

Explanation:

Lena [83]3 years ago
5 0

Answer:

its 4

Explanation:

you had it right because if its at point 1 the other side has nothing so point 4 will go up

You might be interested in
34 atoms of carbon react with 22 molecules of hydrogen gas. How many molecules of methane will be formed & what will be left
pychu [463]
Each carbon atom will react with 4 hydrogen atoms to form methane (C H_{4}) Since there are 2 hydrogen atoms in a hydrogen molecule (H_{2}) then each carbon atom will react with 2 hydrogen molecules. Since there are 22 hydrogen molecules half as many methane molecules will be formed, so 11. Then we can subtract 11 from 34 to find the number of carbon atoms left over.

So in summary, 11 methane molecules will be formed and there will be 23 carbon atoms left over.
5 0
3 years ago
Read 2 more answers
A 15.6 grams of ethanol absorb 868 J as it is heated. The initial temperature is 21.5 degrees Celsius. What is the final tempera
77julia77 [94]
You have to use the equation q=mcΔT and solve for T(final).  
T(final)=(q/mc)+T(initial)
q=the amount of energy absorbed or released (in this case 868J)
m=the mass of the sample (in this case 15.6g)
c= the specific heat capacity of the substance (in this case 2.41 J/g°C)
T(initial)=the initial temperature of the sample (in this case 21.5°C)

When you plug everything in, you should get 44.6°C.
Therefore the final temperature of ethanol is 44.6°C

I hope this helps.  Let me know if anything is unclear.
3 0
3 years ago
In the reaction of 675.9 grams of barium chloride and excess silver(I) nitrate, how many grams of silver(I) chloride should get
zvonat [6]

Taking into account the reaction stoichiometry, the mass of silver(I) chloride formed is 930.37 grams.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

2 AgNO₃ + BaCl₂ → 2 AgCl + Ba(NO₃)₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

  • AgNO₃: 2 moles
  • BaCl₂: 1 mole
  • AgCl: 2 moles
  • Ba(NO₃)₂: 1 mole

The molar mass of the compounds is:

  • AgNO₃: 169.87 g/mole
  • BaCl₂: 208.24 g/mole
  • AgCl: 143.32 g/mole
  • Ba(NO₃)₂: 261.34 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

AgNO₃: 2 moles ×169.87 g/mole= 339.74 grams

BaCl₂: 1 mole ×208.24 g/mole= 208.24 grams

AgCl: 2 moles ×143.32 g/mole= 286.64 grams

Ba(NO₃)₂: 1 mole×261.34 g/mole= 261.34 grams

<h3>Mass of silver(I) chloride formed</h3>

The following rule of three can be applied:  if by reaction stoichiometry 208.24 grams of barium chloride form 286.64 grams of silver(I) chloride, 675.9 grams of barium chloride form how much mass of silver(I) chloride?

mass of silver(I) chloride=\frac{675.9 grams of barium chloride x286.64 grams of silver(I) chloride }{208.24 grams of barium chloride}

mass of silver(I) chloride= 930.37 grams

Finally, the mass of silver(I) chloride formed is 930.37 grams.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

#SPJ1

8 0
2 years ago
Determine the value of k' from the slope. These graphs were plotted in terms of absorbance, but the rate constant should be in t
dolphi86 [110]

Answer:

k' = (2.0345 × 10⁻⁸) M/s.

Explanation:

Beer-Lambert's law explains that Absorbance is directly proportional to the concentration of the substrate under consideration.

A ∝c

A = εlc

where ε = molar absorptivity constant = 87,000 M⁻¹cm⁻¹

l = path length of the solution that the light passes through in cm = 1 cm for most cases.

c = concentration of the substrate.

In terms of rate terms,

A' = εlc'

where A' has units of Absorbance/s

c' = rate of reaction, units of concentration/s

A' = εlc'

From the graph, the slope of the graph = 0.00177 Absorbance/s

0.00177 = 87000 × 1 × c'

c' = (0.00177/87000)

c' = (2.0345 × 10⁻⁸) M/s.

This value is the pseudo rate constant, k'.

Hope this Helps!!!

8 0
3 years ago
How something works is related to its structure
boyakko [2]
True?

Step by step explanation:
Not sure if this is what you wanted.
6 0
3 years ago
Other questions:
  • using the Bohr model for hydrogen: energy = hc/wavelength = 2.18 x 10^-18 Joules (1/nf2 - 1/ni2) N=15 to n=5
    6·1 answer
  • Which of the following statements is true? Atoms of isotopes of an element have different numbers of electrons. Atoms of isotope
    15·2 answers
  • Determine whether each substance will sink or float in corn syrup, which has a density of 1.36 g/cm3. Write “sink” or “float” in
    6·2 answers
  • How would u figure the number of neutrons in an atom?
    12·2 answers
  • Will the scientific method be different 100 years from now ? Why or why not?
    11·2 answers
  • Which organisms in soil helps relieve element so they can be recycled
    12·1 answer
  • In a metal lattice, the metal ions are _____ and they are _____.
    11·1 answer
  • HELP ME OUT PLS!!!
    14·1 answer
  • The temperature of a sample of liquid water changes from 50°C to 30°C. Which statement best explains the change that
    15·1 answer
  • PLEASE HELP CHEMISTRY
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!