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
Mekhanik [1.2K]
3 years ago
15

Which of the following include exact numbers?

Chemistry
2 answers:
True [87]3 years ago
6 0

Answer:

The answer is C

Explanation:

Alchen [17]3 years ago
3 0

Answer:

The correct answer is the option: (c) There are 3600 s in 1 h.

Explanation:

Hello!

Let's solve this!

We will analyze each of the options:

(a) The speed of light in a vacuum is a physical constant; to six significant figures, it is 299792 x 108 rnis: not an exact number.

(b) The density of mercury at 25'C is 13.53 g / rriL: not an exact number.

(c) There are 3600 s in 1 h: it is an exact number since in one hour there are 60 minutes and in one minute 60 seconds, so 60 * 60 = 3600s is an exact number.

(d) In 2012, the United Slates had 50 stales: not an exact number.

We conclude that the correct answer is the option: (c) There are 3600 s in 1 h.

You might be interested in
Which ion La3+ or Lu3+ will form the more stable complex with EDTA4-
shepuryov [24]
I don’t really know but I’ll get someone to help u
6 0
3 years ago
Which compound is produced when HCl(aq) is neutralized by Ca(OH)2(aq)?
kiruha [24]

<u>Answer:</u> The correct answer is Option 1.

<u>Explanation:</u>

Neutralization reaction is defined as the reaction in which acid reacts with a base to produce a salt along with water.

Here, HCl is an acid and Ca(OH)_2 is a base. When these two compounds react, the salt obtained is calcium chloride.

The equation for the above reaction is given by:

2HCl(aq.)+Ca(OH)_2(aq.)\rightarrow CaCl_2(s)+2H_2O(l)

Hence, the correct answer is Option 1.

8 0
2 years ago
Read 2 more answers
What part of the water cycle involves the leaves of plants
zvonat [6]

Answer: The answer to this question is transpiration.

Explanation: I know this answer because i looked it up in a book. The other explanation is I study about this a lot.

5 0
2 years ago
If the human body contains about 50 deciliters of blood, and the blood has about 15 grams of hemoglobin per deciliter, and all o
Tcecarenko [31]

Answer:

The blood will contain 750 grams of O2

Explanation:

Volume of blood in the human body = 15 deciliters

Mass of hemoglobin per deciliter of blood = 15 grams

Mass of hemoglobin in 50 deciliters of blood = 50×15 = 750 grams

Since all the hemoglobin molecules are saturated with O2, mass of O2 in the blood will be the same as mass of hemoglobin molecules in the blood.

Therefore, mass of O2 in the blood is 750 grams

6 0
2 years ago
Read 2 more answers
More knowledge about de the topic of momenclature of organic compounds​
vichka [17]

Answer:

The primary function of chemical nomenclature is to ensure that a spoken or written chemical name leaves no ambiguity concerning which chemical compound the name refers to: each chemical name should refer to a single sub

3 0
1 year ago
Other questions:
  • Eukaryote:mitosis:: prokaryote:
    9·1 answer
  • Look at the picture of the fragmented rock.
    15·1 answer
  • Described the role of electrons in the formation of a covalent bond​
    13·1 answer
  • Which Gender Has Better Reflexs
    9·2 answers
  • When using the scientific method which step comes last
    6·1 answer
  • A sample of carbon monoxide gas is initially in a 5858 mL container. The gas is then moved to 3.29 L container at a temperature
    8·1 answer
  • What it meant by executive mention the function of Executive​
    12·1 answer
  • Jean-Paul is racing in the Tour de France bicycle race. He is moving along rapidly at a speed of 15 kilometers per hour. Suddenl
    11·1 answer
  • Back page anwsers of adobe sisters recap sheet
    11·1 answer
  • I need help please!!! Name the parts making up the female part of the flower and state what each part does. Please use your own
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!