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
wel
3 years ago
5

How many significant figures are in 675000 m 6 4 3 5

Chemistry
1 answer:
Dima020 [189]3 years ago
4 0

Answer:

There are 3 significant figures in 675000

Explanation:

The rules for significant figures:

- Non zero digit (from 1 upward) are always significant

- Trailing zero are not significant

- but zero in the presence of decimal are significant

In this case, the trailing zeros are not significant thus only the first 3 non zero digit are significant.  

You might be interested in
Categorize them by Metal, Nonmetal, Metalloid
laila [671]

Answer:

METAL: found in periodic table, lithium, shiny, lose electrons easily, good conductor, elements

NONMETAL: brittle, ductile, semimetals, found in periodic table, often gain electrons, semiconductors, carbon, shiny, poor conductor, elements

METALLOID: solid, non- ductile, malleable, found in periodic table, silicon, shiny, can be liquids, elements

6 0
3 years ago
PLEASE HELP!! What direction do you predict the addition of a base to the solution containing bromophenol blue will drive the eq
marishachu [46]

Answer:

Below is the clarification of that same particular question.

Explanation:

  • Le Chatlier's theory states that whenever an equilibrium mechanism is disrupted by environmental influences, the program responds by changing the supplies information of its constituents in a somewhat way that the disturbance is invalidated and reaches a stable equilibrium during that disrupted stage, with concentrations of stability differently than ever before.
  • Bromothymol blue seems to be a phenolic subs lone which always allows it to act throughout aqueous solutions as an acidic solution. Being such an acid (weak), it should not add to rapid, as well as introduces a balance with its accompanying but mostly disconnected form.

<u>For that kind of weak diprotic predictor, the standard economic statement can indeed be published as:</u>

    ⇒  H_2In_(aq)\rightleftharpoons In^{2-} +2H^+

  • It could be conclusively proven from either the theory of Le Charlier whereby, that whenever a strong acid becomes applied, the full disorientation of one or the other, through equilibrium formation, induces an increase throughout the medium's proton concentrations.
  • Likewise, it absorbs the protons throughout the media to split water that whenever a solution is added. So, particle concentration throughout the medium is decreasing. To accommodate for this transition, the equilibrium reacts by moving to the correct i.e. causing further dissociation of the optimistic predictor into their dianion through protons, thereby attempting to nullify that perturbation.
4 0
3 years ago
1. Explain how and why stars appear to move through the sky throughout the night. Then, explain why Polaris does not move.
Bas_tet [7]
Polaris the north star is very bright and it doesn’t move
3 0
3 years ago
While burning coal and charcoal, you notice that coal releases more heat than charcoal. That means that the... 1. elastic energy
Dafna11 [192]

Answer:

3). Chemical potential energy

1). lower in charcoal than in coal.

Explanation:

Chemical potential energy is defined as the energy that can be absorbed or stored in a substance's chemical bonds. It can be released when there is a change in the number of particles of the substance.

As per the question, coal releases more heat than charcoal because 'the chemical potential energy of charcoal is lower than the coal' <u><em>and hence, the latter would release more heat on burning i.e. the energy that was absorbed in the chemical bonds of the substance</em></u>. Hence, option 3 and 1 are the correct answers.

4 0
3 years ago
What is the name of the molecule that is used to heat most of our buildings?<br><br> (Chemistry)
mario62 [17]

Answer:

Fluids (air/water) either as water vapour or oxygen and carbon dioxide.

Explanation:

Heat transfer occurs through conduction, convection or radiation.

Many aties, this involves fluids whose molecules have been activated by heated by heat, moving from hotter to cooler regions, allowing for heating or cooling of the rooms.

Building materials have varying conductivity.

7 0
3 years ago
Other questions:
  • A graduated cylinder contains 20.5 mL of water. What is the new water level after 35.2 g of silver metal with a density of 10.5
    13·2 answers
  • The authors state in the general procedures that the reaction was monitored by TLC. How would this be done? What would you spot
    10·1 answer
  • Write a balanced equation for the dissolution of pbcl2.
    15·2 answers
  • Activity: A Ferris wheel with a diameter of 60.0 m is moving at a speed of 2.09 m/s. What is the centripetal
    10·1 answer
  • What does avogadro’s number represent?
    15·1 answer
  • Jsjsjsjjsssjjsjssuusus<br><br>​
    9·1 answer
  • 1) Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water va
    7·1 answer
  • <img src="https://tex.z-dn.net/?f=plz%20%5C%3A%20help%20%20%5C%3A%20me%20%5C%3A%20it%20%5C%3A%20is%20%5C%3A%20due%20%5C%3A%202mo
    10·1 answer
  • What branch of science studies about rocks​
    5·1 answer
  • A Rock is determined to be 1.426 billion years old. How much uranium -235 remains in the rock?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!