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
ra1l [238]
3 years ago
14

Four research teams measured the rotation period of a newly detected neutron star, and what each team wrote in its team notebook

is shown in the table below. Suppose a later and more reliable measurement gives 0.710s for the period of the same star Decide which of the earlier measurements was the most accurate, and which was the most precise.
Team what was written in the notebook most accurate measurement most precise measurement
A 0.70sec
B 0.71s
C 0.75 ± 0.002s
D B/w 1.05s and 1.115s
Chemistry
1 answer:
makvit [3.9K]3 years ago
7 0

Answer:

Explanation:

The correct measurement is .710 s which is equal to .71 s so second measurement that is 0.71 s is most accurate measurement .

B.  0.71s is the most accurate .

Precision depends upon measuring instrument . Measurement by highly precise instrument has greater precision .

The measurement of 0.75 ± 0.002s must have been taken from high precise instrument because it is capable of making measurement upto 3 decimal points .

Hence

C 0.75 ± 0.002s is most precise measurement .

You might be interested in
Help me please!!!!!!!!
alekssr [168]

Answer:

The element is CARBON

The number 6 refers to the ATOMIC NUMBER

the numbers 12, 13, and 14 refer to the ATOMIC MASS

how many protons and neutrons are in the first isotope?

<u>6</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u>6</u>

how many protons and neutrons are in the second isotope?

<u>6</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>7</u>

<u>how many protons and neutrons are in the </u><u>t</u><u>h</u><u>i</u><u>r</u><u>d</u><u> </u><u>isotope?</u>

<u>6</u><u>. </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>8</u>

<u>y</u><u>o</u><u>u</u><u> </u><u>a</u><u>r</u><u>e</u><u> </u><u>w</u><u>e</u><u>l</u><u>c</u><u>o</u><u>m</u><u>e</u><u> </u><u>:</u><u>)</u>

8 0
2 years ago
What is the index of hydrogen deficiency of a compound with a molecular formula of c6h15n?
7nadin3 [17]

Answer:

IHD = 0

Explanation:

Given that

C₆H₁₅N

Number of carbon atoms(n) = 6

Number of hydrogen atoms(x') = 15

Number of nitrogen atoms = 1

There is nitrogen atoms then x = x' -1

The index of hydrogen deficiency given as

IHD=\dfrac{2n+2-x}{2}

So

IHD=\dfrac{2n+2-x}{2}

IHD=\dfrac{2\time 6+2-(15-1)}{2}

IHD = 0

The index of hydrogen deficiency is zero.

6 0
3 years ago
What’s the answer to these 3 questions? thanks!
Citrus2011 [14]
Water has h bonding
H-H
Sodium fluoride
I think
4 0
3 years ago
This for number 8 and 9
3241004551 [841]

Okay for 8 it is the maximum levels will be higher and for 9 is poor circulation leads to lack of nutrients and oxygen

6 0
3 years ago
`You have to be careful about pouring drano down your pipes since it is mainly hydrochloric acid--you can't do it if they are ma
Zanzabum

Answer:

6.67 moles

Explanation:

Given that:-

Moles of hydrogen gas produced = 10.0 moles

According the reaction shown below:-

2Al + 6HCl\rightarrow 2AlCl_3 +3H_2

3 moles of hydrogen gas are produced when 2 moles of aluminium undergoes reaction.

Also,

1 mole of hydrogen gas are produced when \frac{2}{3} moles of aluminium undergoes reaction.

So,

10.0 moles of hydrogen gas are produced when \frac{2}{3}\times 10.0 moles of aluminium undergoes reaction.

<u>Moles of Al needed  = \frac{2}{3}\times 10.0 moles = 6.67 moles</u>

6 0
3 years ago
Other questions:
  • a small cube of aluminum measures15.6mm on a side and weights 10.25g. What is the density of aluminum in g/cm3
    12·1 answer
  • The specific heat of mercury is 380 j/kg/k. How much energy is required to raise the temperature of 42g of mercury from 25°C to
    5·1 answer
  • If the partial pressure of N2 in a scuba divers blood at the surface is 0.79 atm, what will the pressure be if he/she descends t
    7·1 answer
  • When iron reacts with oxygen, it forms iron oxide, or rust.
    11·1 answer
  • 2. What happens to the heat in an exothermic reaction?
    8·1 answer
  • How many moles of Fe contains 3.41 x 1023 Fe atoms?
    14·2 answers
  • Gases Test<br> Chemistry
    5·1 answer
  • How many grams of sodium carbonate (Na2CO3) are needed to produce 6.78
    5·1 answer
  • From carbon dioxide, hydrogen, maltose, and ammonia which one is the largest
    10·1 answer
  • Charlie is frying an egg in a pan located over a gas burner. He develops a model to determine the energy produced by the flame i
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!