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
ladessa [460]
3 years ago
8

Give the number of significant figures: 92.06 kg

Chemistry
2 answers:
Oksana_A [137]3 years ago
7 0

Answer: 4 significant figures

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.

All non-zero numbers are always significant. For example: 654, 6.54 and 65.4 all have three significant figures.

All zero’s between integers are always significant. For example: 5005, 5.005 and 50.05 all have four significant figures.

All zero’s preceding the first integers are never significant. For example: 0.0078 has two significant figures.

All zero’s after the decimal point are always significant. For example: 4.500, 45.00 and 450.0 all have four significant figures.

Thus 92.06 has 4 significant figures.

Viefleur [7K]3 years ago
3 0
The number of significant figures is: 4
You might be interested in
What is evaporation? Describe what happens at the molecular level during evaporation.
jasenka [17]
 Evaporation happens<span> when atoms or </span>molecules<span> escape from the liquid and turn into a vapor. Not all of the </span>molecules in a liquid have the same energy. <span>Sometimes a </span>liquid<span> can be sitting in one place (maybe a puddle) and its molecules will become a </span>gas<span>. That's the process called </span>evaporation<span>. It can happen when liquids are cold or when they are warm. It happens more often with warmer liquids. You probably remember that when matter has a higher temperature, the molecules have a higher </span>energy<span>. When the energy in specific molecules reaches a certain level, they can have a </span>phase change<span>. Evaporation is all about the energy in individual molecules, not about the average energy of a system. The average energy can be low and the evaporation still continues. </span>
6 0
3 years ago
What is the theoretical yield of Ca(OH)2, in grams, if 31.8 g of CaO is hydrolyzed (reacted) in an excess of water?
Fiesta28 [93]

The theoretical yield of Ca(OH)₂ : 42.032 g

<h3>Further explanation</h3>

Given

31.8 g of CaO

Required

The theoretical yield of Ca(OH)₂

Solution

Reaction

CaO + H₂O⇒Ca(OH)₂

mol CaO (MW=56 g/mol) :

= mass : MW

= 31.8 g : 56 g/mol

= 0.568

From equation, mol Ca(OH)₂ = mol CaO = 0.568

Mass Ca(OH)₂ (MW=74 g/mol) :

= 0.568 x 74

= 42.032 g

6 0
3 years ago
Differentiated cells will first organize themselves into ________
ziro4ka [17]
It's TISSUES.
CELLS, TISSUES, ORGANS, ORGAN SYSTEM, NEW ORGANISM
3 0
3 years ago
Consider the following reaction. <br><br> What is the conjugate base of CH3COOH
Lera25 [3.4K]

According to Bronsted-Lowry theory of acids and bases, an acid is proton donor and a base is proton acceptor. When an acid loses the proton, it forms the conjugate base of the acid. Similarly when a base accepts a proton, it forms the conjugate acid if that base. A conjugate acid base pair differs by a single proton.

Given the weak acid CH_{3}COOH. It can lose a proton to form the conjugate base.

CH_{3}COOH(aq)-->CH_{3}COO^{-}(aq)+H^{+}(aq)

Therefore, the conjugate base of CH_{3}COOHis CH_{3}COO^{-}.

4 0
4 years ago
Read 2 more answers
How many moles of sodium (Na) would be needed to react with 3.82 moles of oxygen (O2)? Please explain, thanks!! :)
kifflom [539]
4Na + O2 - 2Na2O

Moles= 4:1 ratio

3.82 x 4 = 15.28 moles
6 0
3 years ago
Other questions:
  • the mass number of a chronium atom is 52 and it has 24 protons. how many neutrons does this atom have?
    6·1 answer
  • What metal react with acids to form h2 gas?
    11·1 answer
  • Please help in test first to answer will get BRAINLIEST
    14·2 answers
  • Sodium chloride is an ionic compound. The reaction below shows how sodium chloride forms from sodium and chlorine. Which stateme
    14·2 answers
  • Compounds have two or more atoms and the atoms can be the same element<br> true or false
    8·1 answer
  • A 38.6 kg marble slab is shown above. What is it’s density? Give you’re answer to the nearest tenth
    10·1 answer
  • Coal can be used to generate hydrogen gas (a potential fuel) by the following endothermic reaction:C(s)+H2O(g) -------------&gt;
    15·1 answer
  • you know the mass of an object and the force applied to the bject to make it move . Which of Newtons laws of motion will help yo
    5·2 answers
  • Which element, when combined with Iodine, would most likely form an ionic compound?
    10·1 answer
  • How was the position of planet Uranus predicted?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!