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
drek231 [11]
3 years ago
9

How many significant figures are in the following number? 0.000485

Chemistry
2 answers:
aliina [53]3 years ago
8 0

Answer:

4 or 3

Explanation:

almond37 [142]3 years ago
5 0

Answer:

6

Explanation:

The number behind the decimal all of them are representing a place on the number line therefore they are all serving a purpose.

You might be interested in
Imagine an alternate universe where the value of the Planck constant is 6.6207 x 10^-36 J*s.
Salsk061 [2.6K]

Answer:

See explanation

Explanation:

According to Louis de Broglie, matter has an associated wavelength. He was the first scientist to establish the idea of wave-particle duality or wave- particle paradox.

The display of wavelike properties by objects in the universe is dependent on the magnitude of the of the mass of the body. Small objects have a large associated wavelength and can be described completely by quantum mechanics.

A buckyball with a mass of 1.2 x 10-21 g, 0.7 nm wide, moving at 38. m/s has a very small mass and significant associated wavelength hence the system can be completely described by quantum mechanics.

5 0
3 years ago
What is the role of the greenhouse gases in the atmosphere?
Karolina [17]

Answer:

greenhouse effects are molecules that trap heat on earth atmosphere

7 0
3 years ago
Read 2 more answers
The correct sequence where reactivity towards oxygen increases.
ziro4ka [17]

Answer:

Option D is good to go!

Explanation: as per the reactivity series more reactive substances will react with the counterpart substance.The most reactive substance here is calcium while the least reactive is aluminium, the magnesium comes in between.As per their reactivity, these substances will react with oxygen.

Explanation:

3 0
3 years ago
1) A mixture of anhydrous sodium carbonate and sodium hydrogencarbonate of mass 10.000 g was heated until it reached a constant
vodomira [7]

The masses of the components are obtained as;

  • Sodium hydrogen carbonate = 3.51 g
  • Sodium carbonate =  8.708 g
<h3>What is decomposition?</h3>

The term decomposition has to do with the breakdown of the given substance into its components. The components of sodium hydrogen carbonate could be identified as water vapor, carbon dioxide gas and sodium carbonate. Among these products that have been listed here, we can see that it is only the sodium carbonate that remains as a solid. The others are gases that move away from the system that is under study.

Now putting down the equation of the reaction, we have;

2NaHCO_{3} (s) ----- > Na_{2} CO_{3} (s) + CO_{2} (g) + H_{2} O(g)

Now, the loss in  mass must be due to the carbon dioxide and the water. Hence we obtain the loss in mass to be 10.000 g -  8.708 g = 1.292 g

Mass of sodium hydrogen carbonate = 2 * 88 g/mol * 1.292 g/62 g/mol

= 3.51 g

Learn more about anhydrous sodium carbonate :brainly.com/question/20479996

#SPJ1

6 0
1 year ago
SKILL: MAKING VALID GENERALIZATIONS Use the paragraph below to answer the following questions. The Chinese people also call the
miss Akunina [59]

Answer:

Hope this helps

Explanation:

A generalization I can make about the Huang River is that the Huang River is the most important river in China. Also called the Yellow River, it is where historians believe ancient Chinese people settle in to develop its civilization on the banks of the river for the many benefits it had for life and agriculture. However, early Chinese people had to learn how to control the floods of the river in order to survive ad prosper.

6 0
2 years ago
Read 2 more answers
Other questions:
  • The minimum amount of methyl benzoate needed to trigger an alert for a drug dog is on the order of:
    10·1 answer
  • BEST ANSWER = BRAINIEST !1.What will the weather most likely be like the day a cold front arrives?
    15·1 answer
  • Which of the following atoms have the same number of neutrons as an atom of Aluminum-27?
    5·2 answers
  • What three factors affect the rate of dissolution?
    14·1 answer
  • A concrete barrier in a parking lot a structure of mass, frame, or shell? Which one would it be?
    14·1 answer
  • Match the following words.
    9·1 answer
  • carbon has three main adjectives 12C 13c and 14c by comparing the atomic structure of the isotopes explain what is meant by the
    5·1 answer
  • HeLp Me PlEaSe , Ill MaRk YoU bRaInLiEsT !
    13·1 answer
  • Which word sentence represents the equation? 4y = y + 9
    10·2 answers
  • Why do scientists think the Grand Canyon was once covered by an ocean? (1 point)
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!