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
masya89 [10]
3 years ago
9

Which of the following is the most important, when working in the science laboratory?

Chemistry
1 answer:
Amanda [17]3 years ago
8 0
Safety is correct your welcome
You might be interested in
- Calculate the molarity of 23 grams of OH in 24<br> of water
Vlad [161]

Answer:

mustard gas

Explanation:

3 0
3 years ago
What is the difference between long period and short period<br>.​
Katarina [22]
The short run refers to a period of time short enough so that the amounts of at least one or more of the factors of production used by the firm cannot be changed. ... By the long run we mean a period of time long enough so that the amounts of all factors of production used by the firm can be changed.
8 0
3 years ago
How many grams of nitric acid HNO₃, are required to neutralize (completely react with) 4.30 grams of Ca(OH)2 according to the ac
Brrunno [24]

Answer:

7.32g of HNO3 are required.

Explanation:

1st) From the balanced reaction we know that 2 moles of HNO3 react with 1 mole of Ca(OH)2 to produce 2 moles of H2O and 1 mole of Ca(NO3)2.

From this, we find that the relation between HNO3 and Ca(OH)2 is that 2 moles of HNO3 react with 1 mole of Ca(OH)2.

2nd) This is the order of the relations that we have to use in the equation to calculate the grams of nitric acid:

• starting with the 4.30 grams of Ca(OH)2.

,

• using the molar mass of Ca(OH)2 (74g/mol).

,

• relation of the 2 moles of HNO3 that react with 1 mole of Ca(OH)2 .

,

• using the molar mass of HNO3 (63.02g/mol).

4.30g\text{ Ca\lparen OH\rparen}_2*\frac{1\text{ mol Ca\lparen OH\rparen}_2}{74g\text{ Ca\lparen OH\rparen}_2}*\frac{2\text{ moles HNO}_3}{1\text{ mole Ca\lparen OH\rparen}_2}*\frac{63.02g\text{ HNO}_3}{1\text{ mole HNO}_3}=7.32g\text{ HNO}_3

So, 7.32g of HNO3 are required.

4 0
1 year ago
Why is it so important to use more than just fossil fuels for our energy sources?​
blsea [12.9K]

Answer:

Fossil Fuels have the ability to pollute and trash our ecosystems. Its better for us to use clean and renewable energy too.

Explanation:

8 0
3 years ago
The growth rate is the death rate minus the birth rate these change because birth rates and
zysi [14]

Answer:

Hey there!

False. The growth rate is actually the birth rate minus the death rates.

Let me know if this helps :)

4 0
3 years ago
Other questions:
  • Which of the following is false regarding supersonic speed?
    10·1 answer
  • This element is added to table salt to prevent the development of a goiter ( enlargement of the thyroid gland
    14·1 answer
  • The annual production of HNO3 in 2013 was 60 million metric tons Most of that was prepared by the following sequence of reaction
    9·1 answer
  • Which of the following best describes acid anhydrides?
    15·1 answer
  • Magnesium is added to dilute hydrochloric acid. This makes bubbles of hydrogen and a colorless solution of magnesium chloride. W
    9·2 answers
  • Determining the molecular formula of a hydrocarbon with a relative molecular mass of 54​
    15·1 answer
  • Which two geographic features form as a result of continental-continetal convergent<br> plates?
    9·1 answer
  • A student repeats a reaction several times to test the effects of various
    5·2 answers
  • What is similarities ALL covalent,ionic,and metallic bonds have?
    15·1 answer
  • (Multiple choice) Of the following species, which is most likely to be oxidized?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!