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
Bumek [7]
3 years ago
10

How do you know if a chemical reaction has occurred?

Chemistry
1 answer:
never [62]3 years ago
3 0
If one or more of the following occur: Gas formation, precipitate formation, color change, temperature change, or odor

You might be interested in
What is a specialized
ale4655 [162]

What's your question? Am I missing something?

7 0
3 years ago
Read 2 more answers
When magnesium (mg) metal is placed in hydrochloric acid (hcl), it forms magnesium chloride (mgcl2) and a gas. what gas is forme
Delvig [45]
Magnesium in hydrochloric acid forms H2 (hydrogen) gas according to the balanced chemical equation:
Mg + 2HCl→H2 + MgCl2
6 0
3 years ago
Read 2 more answers
The compound trimethylamine, (CH3)3N, is a weak base when dissolved in water. Write the Kb expression for the weak base equilibr
Zina [86]

Answer:

Kb = [OH⁻] . [C₃H₉NH⁺] / [ C₃H₉N ]

Explanation:

The equation for the reaction of trimethylamine when it is dissolved in water is:

C₃H₉N  +  H₂O ⇄ C₃H₉NH⁺ + OH⁻   Kb

1 mol of trimethylamine catches a proton from the water in order to produce trimethylamonium.

It is a base, because it give OH⁻ to the medium

Expression for Kb (Molar concentration)

Kb = [OH⁻] . [C₃H₉NH⁺] / [ C₃H₉N ]

7 0
3 years ago
Calculate the molar mass of N2O. Report your answer to 2 decimal places.
kvv77 [185]

Answer:

013 g/mol is the molar mass of N2O.

5 0
1 year ago
What does the treatment do for Down syndrome?
mojhsa [17]

Answer:

There is NO cure for Down Syndrome

Explanation:

Down syndrome cannot be cured. Early treatment programs can help improve skills. They may include speech, physical, occupational, and/or educational therapy. With support and treatment, many people with Down syndrome live happy, productive lives

6 0
3 years ago
Read 2 more answers
Other questions:
  • Kaia, a chemical engineering graduate, has documented all titration procedures in her project report. She refers to this report
    12·1 answer
  • 2.247 liter to milliliter
    7·2 answers
  • Among teenagers, what is the most commonly used substance?
    9·1 answer
  • What is the 2nd most abundant element in the earths crust
    13·1 answer
  • The combined actions of your brain , nervous system, muscles, joints and bones that allow you to do anything from holding a spoo
    9·1 answer
  • Which of the following is an incorrect name for an acid? A. acetic acid B. hydrocarbonate acid C. hydrocyanic acid D. sulfurous
    10·1 answer
  • WHEN I SAY I NEED HELP ASAP !!!
    10·1 answer
  • Clasifica los siguientes elementos en metales, no metales, metaloides , o gases , nobles : flúor , azufre , nitrogeno , cloro ,
    12·2 answers
  • How much energy (in J) is lost when a sample of iron with a mass of 28.3 g cools from 66.0 degrees celsius to 24.0 degrees celsi
    14·1 answer
  • Please help me with number 4 and 5 on my study guide
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!