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
Eva8 [605]
3 years ago
14

What are 3 signs that a chemical reaction is happening, what tells you that this is definitely a chemical reaction?

Chemistry
1 answer:
Charra [1.4K]3 years ago
8 0
Produces heat, putting off air or bubbles and changes the smell or odor it changes the state that’s how you know it is a chemical reaction
You might be interested in
What is electrical conductivity? Make it simple
Alenkasestr [34]

Answer: Explanation:

Conductivity of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is Siemens per meter.

3 0
4 years ago
Read 2 more answers
At a certain temperature the rate of this reaction is second order in with a rate constant of Suppose a vessel contains at a con
grigory [225]

Answer: The given question is incomplete. The complete question is:

At a certain temperature the rate of this reaction is second order in NH_4OH with a rate constant of 34.1M^{-1}s^{-1} . NH_4OH(aq)\rightarrow NH_3(aq)+H_2O(aq)

Suppose a vessel contains NH_4OH at a concentration of 0.100 M Calculate how long it takes for the concentration of NH_4OH  to decrease to 0.0240 M. You may assume no other reaction is important. Round your answer to 2 significant digits.

Answer: It takes 0.93 seconds  for the concentration  NH_4OH  to decrease to 0.0240 M.

Explanation:

Integrated rate law for second order kinetics is given by:

\frac{1}{a}=kt+\frac{1}{a_0}

a_0 = initial concentration = 0.100 M

a= concentration left after time t = 0.0240 M

k = rate constant = 34.1M^{-1}s^{-1}

t = time taken for decomposition = ?

\frac{1}{0.0240}=34.1\times t+\frac{1}{0.100}

t=0.93s

Thus it takes 0.93 seconds  for the concentration  NH_4OH  to decrease to 0.0240 M.

7 0
3 years ago
Calculate the molar solubility of AgCl, using its Ksp value of 1.8 x 10-10.
qwelly [4]

Answer:1.34 ×10^-5

Explanation:

AgCl = (Ag+) (Cl-)

=(S)(S)

= S²

S stands for molar solubility

Ksp =S² = 1.80 × 10^ -10

S= √[1.80 × 10^ -10]

=1.34 × 10^-5

8 0
3 years ago
Please help- D; <br><br> .<br> .<br> .<br> .<br> .
Rama09 [41]

Answer: Silicon dioxide

Explanation:

di is 2 and since oxygen is 2

7 0
3 years ago
Why are you genetically distinct
agasfer [191]
You are genetically distinct, because when you are receiving all of your genes, your parents dominant and recessive genes randomly mix giving you a unique set of genes different from anyone else in the entire world.

4 0
3 years ago
Read 2 more answers
Other questions:
  • If 14.5kj of heat were added to 485g of liquid water, how much would its temp increase
    8·1 answer
  • A 6.1-kg solid sphere, made of metal whose density is 2600 kg/m3, is suspended by a cord. When the sphere is immersed in a liqui
    11·1 answer
  • During a science experiment the temperature of a solution in beaker 1 was 5 degrees below zero
    12·1 answer
  • How many moles of the product fecl3 do you make, when 8moles of fe react with excess cl2
    7·2 answers
  • Adding a neutron to an atom changes what property of the atom?
    8·2 answers
  • Using the reaction below: 2 CO2(g) + 2 H2O(l) → C2H4(g) + 3 O2(g) ΔHrxn= +1411.1 kJ What would be the heat of reaction for this
    12·1 answer
  • What is an element?​
    10·2 answers
  • Na2S2O3 + AgBr NaBr + Na3ſAg(S203)2] What is
    7·1 answer
  • 1. What holds the solar system together
    14·2 answers
  • Give me an example of how can we use osmiosin in our hauses
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!