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
Scilla [17]
2 years ago
9

Rounding to significant figures?

Chemistry
1 answer:
Serggg [28]2 years ago
3 0

Answer:

7.17

Explanation:

its 7.17 because of the 6

You might be interested in
Which part of a nuclear power plant spins to produce mechanical energy?
OLga [1]
The turbine since the definition of this word is <span> a machine for producing continuous power in which a wheel or rotor, typically fitted with vanes, is made to revolve by a fast-moving flow of water, steam, gas, air, or other fluid. </span>
7 0
3 years ago
______ have no definite shape, but definite volume
NemiM [27]

Answer:

liquids

Explaination:

3 0
3 years ago
What is the Scientific<br> Method?
Doss [256]

Answer:

I just finished a unit on Scientific Method in my science class! Anyway, it's defined in the screenshots below. Hope this helps!

8 0
3 years ago
In your own words, explain why we have seasons on Earth. Why do some places have all 4 seasons and others seem to only have 1 or
Ber [7]
We have seasons on earth because of the way the earth is tilt on its axis. at a certain time in the year, the sun's rays reach certain parts of the globe more than others.

some places have 4 seasons because they are in the northern hemisphere, which is in the sweet spot of the sun's rays that give us each season. other places only have 1 or 2 because they are not in the northern hemisphere.
7 0
3 years ago
Given that the freezing point depression constant for water is 1.86°c kg/mol, calculate the change in freezing point for a 0.907
melamori03 [73]

Answer : The correct answer for change in freezing point = 1.69 ° C

Freezing point depression :

It is defined as depression in freezing point of solvent when volatile or non volatile solute is added .

SO when any solute is added freezing point of solution is less than freezing point of pure solvent . This depression in freezing point is directly proportional to molal concentration of solute .

It can be expressed as :

ΔTf = Freezing point of pure solvent - freezing point of solution = i* kf * m

Where : ΔTf = change in freezing point (°C)

i = Von't Hoff factor

kf =molal freezing point depression constant of solvent.\frac{^0 C}{m}

m = molality of solute (m or \frac{mol}{Kg} )

Given : kf = 1.86 \frac{^0 C*Kg}{mol}

m = 0.907 \frac{mol}{Kg} )

Von't Hoff factor for non volatile solute is always = 1 .Since the sugar is non volatile solute , so i = 1

Plugging value in expression :

ΔTf = 1* 1.86 \frac{^0 C*Kg}{mol} * 0.907\frac{mol}{Kg} )

ΔTf = 1.69 ° C

Hence change in freezing point = 1.69 °C

5 0
3 years ago
Other questions:
  • An aluminum engine block requires 8669 kJ of energy for the temperature to rise from 75.0 °F to 195 °F. The specific heat of lea
    15·1 answer
  • What is the best definition of federalism
    13·1 answer
  • Calculate the kinetic energy of co2 at 254 k .
    12·1 answer
  • The element X has 2 valence electrons. its is a
    7·1 answer
  • What are the solutions to the quadratic equation 2x2 + 10x - 48 = 0?<br>​
    6·1 answer
  • I need help question 7
    10·1 answer
  • Brainliest and a free hug :) thank you!!
    11·1 answer
  • Which of these common substances is a homogeneous mixture?
    11·2 answers
  • In a stable atom, the number of protons are?
    5·2 answers
  • Someone please Help please When you are measuring your pulse (heart beats per minute) what system are you monitoring?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!