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
solong [7]
3 years ago
7

What prefixes is best for measuring large quantities like the mass of a person?

Chemistry
1 answer:
Alecsey [184]3 years ago
7 0
The answer is Deca foo.
You might be interested in
6) A 14.5 g sample of sodium chloride reacts with excess fluorine gas according to
Ann [662]

The mass of  chlorine gas produced by 14.5 grams of sodium chloride is 10.42 g.

The mass of  chlorine gas produced by 14.5 grams of sodium chloride is 8.81 g.

The given parameters;

  • <em>mass of the sodium chloride, = 14.5 g</em>
  • <em>2NaCl(s) + F2(g) → 2NaF(s) + Cl2(g)</em>

<em />

In the reaction above, we can deduce the following;

molecular mass of 2Nacl = 2(58.44) = 116.88 g

molecular mass of 2NaF = 2(42) = 84 g

molecular mass of  Cl2 = 71 g

The mass of sodium fluoride produced by 14.5 grams of sodium chloride is calculated as follows;

116.88 g of NaCl --------------- 84 g of NaF

14.5 g of NaCl -------------------  ?

= \frac{84 \times 14.5}{116.88} \\\\= 10.42 \ g

The mass of  chlorine gas produced by 14.5 grams of sodium chloride is calculated as follows;

116.88 g of NaCl --------------- 71 g of Cl2

14.5 g of NaCl ------------------- ?

= \frac{14.5 \times 71}{116.88} \\\\= 8.81 \ g

Learn more here:brainly.com/question/8470145

8 0
2 years ago
How many of the following molecules are polar? Pcl5 cos xeo3 sebr2
klasskru [66]

Answer:

<em>Three (3) of the molecules are polar: </em>CoS,<em> </em>XeO_{3},<em> </em>SeBr_{2}<em>.</em>

Explanation:

Polar substances have their elements held together by a covalent bond that contain partially positive and negative charges, which results in a difference in the charges' electronegativity difference (usually ranging between 0.4 and 0.7).

  • PCl5 is <u>non-polar</u> with a symmetric geometry
  • CoS is <u>polar</u>
  • XeO3 is <u>polar</u>, with a trigonal pyramidal molecular geometric
  • SeBr2 is <u>polar</u> as the difference their electronegativity is about ).5
5 0
3 years ago
What is the volume of NH3 produced in the following reaction when 3.0L of N2 reacts with 4.0L of H2?
trapecia [35]

Hey there !

Given the reaction:

N2 + 3 H2 = 2 NH3

At constant pressure and temperature  ,volume is proporcional to moles:

Theoretical moles of  N2 and H2 =>  1:3

Theoretical volume of N2 and H2 => 1:3

Experimental volume of N2 and H2 => 3.0 L  :  4.0 L

0.75 : 1  = 2.25 : 3

Since N2 is in excess reactant   , H2 is the limiting reactant

Therefore:

volume  of NH3 is  2/3  * Volume of H2

= 2/3 * 4.0 = 2.66 L



Hope that helps!

4 0
3 years ago
Read 2 more answers
1 mole of no2(g) has a greater entropy than 1 mole of n2o4(g). true or false
bija089 [108]
In order to answer this, you need to find the empirical data for the standard entropies. Please refer to this link: http://www.mrbigler.com/misc/energy-of-formation.PDF

For NO₂ gas, the entropy is 240 J/mol-K. For N₂O₄ gas, the entropy is 304.2 J/mol-K. Therefore, <em>the statement is false.</em>
7 0
2 years ago
What is 0.000028474 in scientific notation
antiseptic1488 [7]

Answer:

2.8474 \:  \times  \:  {10}^{ - 5}

this the solution

6 0
3 years ago
Read 2 more answers
Other questions:
  • 5. Rocks and sediment change their form as they move through the rock cycle. Which change
    12·1 answer
  • Which of these is a property of acids?
    11·2 answers
  • PLEASE HELP!! URGENT!!
    5·1 answer
  • The boiling points of some group 7A hydrides are tabulated below.
    14·1 answer
  • Compare and contrast atoms elements compounds and molecules
    11·1 answer
  • What happens to the density of a box full of leaves if you crush up all the leaves and place them in another box
    11·1 answer
  • Indicate the charge the following elements as they achieve the noble gas configuration.
    15·1 answer
  • What evidence lead rutherford to propose that the atom had a nucleus?
    10·1 answer
  • In the reoxidation of QH2 by purified ubiquinone-cytochrome c reductase (Complex III) from heart muscle, the overall stoichiomet
    11·1 answer
  • How can I write a poem about cells
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!