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
Irina-Kira [14]
3 years ago
5

A student measures the mass of an object and obtains three values: 21.57 g,

Chemistry
1 answer:
Cerrena [4.2K]3 years ago
6 0

Answer:

21.65

Explanation:

The average = total divided by the number of readings

21.57

22.04

<u>21.35</u>

Total = 64.96

Average = 64.96 / 3 = 21.65

You might be interested in
Name this compound (ignore Stereocenter)<br>​
anyanavicka [17]
Compound name:

- Chlorine monofluoride

Formula: ClF

5 0
2 years ago
I don't know how to solve this​
Misha Larkins [42]

For the first part, use the question M=mol/vol (liters)

To do this, you have the given 1.6 M solution

divide the 360g by the molar mass of ethanol (44.07) to get moles

360/44.07=8.16 mol

so

1.6M = 8.16 mol/x vol

volume: 5.1 Liters

8 0
3 years ago
Which statements describe an element? Check all that apply.
Molodets [167]

Answer:

<em>Hello, Your answer will be B,C,E, And F.</em>

Explanation:

An element is a substance whose atoms have same number of protons which means all atoms in an element have same atomic number. Elements are simplest substances which cannot be broken down by physical changes or chemical reactions. Elements are classified by their names and symbols. Hope That Helps!

8 0
3 years ago
A teaspoon of powdered caffeine can be as deadly as a teaspoon of ricin. <br><br> True or False
Darina [25.2K]

A teaspoon of caffeine is <em>NOT</em> deadly as teaspoon of ricin                                                                                                            

4 0
3 years ago
Read 2 more answers
Some thermodynamic properties of ethanol are listed in the table. Thermodynamic Properties Property Value c (solid) 0.5 J/g °C c
alexira [117]
<h2>Answer </h2>

Option C - 320J

<u>Explanation </u>

Since ethanol solid at −120 °C and is only cooling down (it won’t change states) . The amount of Thermodynamic properties values c is given in form of solid, liquid and gas. Amount of energy released is calculated below.  

Formula,

= change in temperature  x specific heat capacity for solid ethanol x 40

=> 0.5 x 16x 40 = 320J

Therefore, the 320J of heat is released when 40.0g of ethanol cools.

4 0
3 years ago
Other questions:
  • A student uses red litmus paper to test the pH value of different solutions. Which would result in a color change of the litmus
    15·2 answers
  • Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shift
    9·1 answer
  • What is the meaning of the following metric prefixes kilo,deco,centi,milli,micro and nono
    11·1 answer
  • The movement of genes from one population to another is called _____.
    15·2 answers
  • If only one-fourth the amount of brown sugar in the recipe were used, how much brown sugar would be used?
    15·1 answer
  • A sample of N2 gas occupied 9.20 L at 21 degrees C and 0.959 atm. If the pressure is tuned to 1.15 atm at constant temperature w
    6·1 answer
  • Draw structure for each of the following a) m-Xylene b) o-Cresol c) 3-Bromo-4-nitrobenzenesulfonic acid
    8·1 answer
  • Is plastic is substance, homogenous or heterogineous mixture
    9·1 answer
  • Air pollution that forms from the interaction between chemicals in the air and sunlight
    5·1 answer
  • Elements, Compounds,&amp; Mixtures,
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!