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
natita [175]
4 years ago
6

Help help help help help

Chemistry
1 answer:
givi [52]4 years ago
6 0

Answer:

D. Up-Down

Explanation:

Hoped this helped you <\3

You might be interested in
A) Find the gas speed of sulfur dioxide at 100.0 degrees Celsius? ______________
gtnhenbr [62]

a. 381.27 m/s

b. the rate of effusion of sulfur dioxide = 2.5 faster than nitrogen triiodide

<h3>Further explanation</h3>

Given

T = 100 + 273 = 373 K

Required

a. the gas speedi

b. The rate of effusion comparison

Solution

a.

Average velocities of gases can be expressed as root-mean-square averages. (V rms)  

\large {\boxed {\bold {v_ {rms} = \sqrt {\dfrac {3RT} {Mm}}}}

R = gas constant, T = temperature, Mm = molar mass of the gas particles  

From the question  

R = 8,314 J / mol K  

T = temperature  

Mm = molar mass, kg / mol  

Molar mass of Sulfur dioxide = 64 g/mol = 0.064 kg/mol

\tt v=\sqrt{\dfrac{3\times 8.314\times 373}{0.064} }\\\\v=381.27~m/s

b. the effusion rates of two gases = the square root of the inverse of their molar masses:  

\rm \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }

M₁ = molar mass sulfur dioxide = 64

M₂ =  molar mass nitrogen triodide = 395

\tt \dfrac{r_1}{r_2}=\sqrt{\dfrac{395}{64} }=\dfrac{20}{8}=2.5

the rate of effusion of sulfur dioxide = 2.5 faster than nitrogen triodide

4 0
3 years ago
What four factors influence the rate of a homogeneous reaction.
Anika [276]
1) concentration or partial pressure of species
involved. 2) temperature • 3) presence of catalyst
4) nature of reactants.
5 0
2 years ago
How can the law of conservation of<br> mass for a chemical reaction be expressed?
djverab [1.8K]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Explanation:

How does the concept of conservation of mass apply to chemical reactions? the reactants and products have exactly the same atoms. the reactants and products have exactly the same molecules. the change in the amount of matter is equal to the change in energy.

can someone help me with my qustions?

5 0
3 years ago
Which of these outcomes is conclusive evidence that mixing sugar in water is a physical change
Bogdan [553]

Mixing water and sugar is a physical change. A physical change is just a change in the form of the substance, whereas a chemical change is when the substance itself changes… chemically. An easy way to figure out which is which is trying to "undo" the change. If it can be undone, it is physical.

8 0
4 years ago
Read 2 more answers
Which statements prove the law of conservation of matter (select all that apply)
andre [41]
D . Water evaporating in the water cycle is an open system
3 0
2 years ago
Other questions:
  • Sydney, Australia, Is in the Southern Hemisphere. Which choice describes the conditions in Sydney on or around December 21
    10·2 answers
  • A gas occupies 4.65 liters at 0.86 atm. What is the pressure if the volume becomes 15.27 L?
    15·1 answer
  • A cylinder with a movable piston contains 2.00 g of helium, He, at room temperature. More helium was added to the cylinder and t
    11·1 answer
  • Which part of homeostasis is this adorable puppy balancing out with his little stuffed animal buddy?
    14·1 answer
  • 1. At what temperature dose water freeze
    8·1 answer
  • Н
    15·1 answer
  • Describe the buffer capacity of the acetic acid buffer solution in relation to the addition of both concentrated and dilute acid
    5·1 answer
  • Which of the following provides the most evidence for the theory of plate tectonics?
    10·1 answer
  • All rocks began as what type of rock?<br> planetary<br> igneous<br> metamorphic<br> sedimentary
    5·1 answer
  • Physical or chemical change? <br> Red and blue food coloring mix to make purple.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!