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
bija089 [108]
1 year ago
13

Lina has worked hard to gather data for her experiments. With her last set of data she received, she is ready to publish her pap

er in
a peer-reviewed journal. In order to do that, she has to make sure that all of her data has consistent SI units, significant figures and
in scientific notation if necessary. Help Jessica get all of her data in order. How many significant figures are in 43.8lbs?
Chemistry
1 answer:
nika2105 [10]1 year ago
8 0

43.8 has 3 significant figures and 1 decimal.

<h3 /><h3>What are significant figures?</h3>

The term significant figures refer to the number of important single digits (0 through 9 inclusive) in the coefficient of an expression in scientific notation.

All zeros that occur between any two non-zero digits are significant. For example, 108.0097 contains seven significant digits. All zeros that are on the right of a decimal point and also to the left of a non-zero digit are never significant. For example, 0.00798 contained three significant digits.

Hence, 43.8 has 3 significant figures and 1 decimal.

Learn more about significant figures here:

brainly.com/question/14359464

#SPJ1

You might be interested in
Electrons must be able to flow through a material in order for the material to conduct
djverab [1.8K]

The molecular structure of the solids has lower ability to conduct electricity due to tight holding by nucleus.

<h3>Why molecular solids are poor conductors?</h3>

Molecular solids are also poor conductors of electricity because their valence electrons are tightly held by the nuclear charges present in the nucleus while on the other hand, Metals are good electrical conductors in the solid form due to the presence of free electrons that helps in the conduction of electricity.

Learn more about electricity here: brainly.com/question/25144822

7 0
2 years ago
How many milliseconds (ms) are there in 3.5 seconds (s)?
ivolga24 [154]

Answer:

13 hundred

Explanation:

4 0
3 years ago
Read 2 more answers
Is density a chemical or physical property of a substance?
pychu [463]

Answer:

A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

I hope this helps you understand! <3

8 0
2 years ago
If a proton and an electron are released when they are 5.50×10−10 mm apart (typical atomic distances), find the initial accelera
Vlada [557]

Answer: The initial acceleration of the proton = (4.56 × 10^23) m/s2

The initial acceleration of the electron = (8.36 × 10^26) m/s2

Explanation: The force of attraction between the proton and electron can be computed using the statements of Coulomb's law which state that the force of attraction between two charged particles is directly proportional to the product of the two charges and inversely proportional to the square of their distances apart.

F = (Kq1q2)/(r^2) where K = (9 × (10^9) Nm(C^-2))

But q1 is the charge on a proton = (1.6 × (10^-19)) C

q2 is charge on an electron = -(1.6 × (10^-19)) C

r = (5.50 × (10^-10))mm = (5.50 × (10^-13))m

Computing all that, F = 0.0007616529 N = (7.62 × 10^-4) N

But the force of attraction is converted to that required for motion when they're released.

F = ma.

For proton, m = (1.67 × 10^-27) kg

a = F/m = 0.000762/(1.67 × 10^-27) = (4.56 × 10^23) m/s2

For electron, m = (9.11 × 10^-31) kg

a = F/m = 0.000762/(9.11 × 10^-31) = (8.36 × 10^26) m/s2

QED!

7 0
2 years ago
Why do all atoms of an element have the same atomic number, although they may have
Evgesh-ka [11]

Answer:

Here’s what I get.

Explanation:

  • The atomic number is the number of protons in the nucleus of an atom.
  • The number of protons determines the number of electrons.
  • The number of electrons determines the chemical properties of the element,

Thus, the atomic number determines the identity of the element.

The atomic mass does not affect the chemical properties, so different isotopes of an element behave alike.

5 0
3 years ago
Other questions:
  • Im the only noble gas with 2 electrons
    10·2 answers
  • How<br> myny moles are present in 5.6x1022 atoms of Ne? (0.09 moles Ne)<br> Sot ne10.05
    10·1 answer
  • What is the ph of the solution prepared by dissolving 0.927 mol hcl in enough water to make a 150 l aqueous solution?
    11·1 answer
  • Abby was riding her motorcycle on a freeway 480 kilometers north of her exit. She was riding south toward the exit at a constant
    12·1 answer
  • True or false
    8·1 answer
  • Which statement best describes the building?
    9·2 answers
  • Balance each of these equations.
    12·1 answer
  • What can you tell about the people that supported Hitler and his party??​
    6·1 answer
  • How many moles of each element are in one mole of (NH4)2S? (3 points)
    5·2 answers
  • an ideal otto cycle with argon as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cy
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!