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
Bas_tet [7]
2 years ago
13

How does one calculate the mass of the sample?

Chemistry
1 answer:
antoniya [11.8K]2 years ago
4 0

Answer:

HUH I NEED A PIC of the question

Explanation:

You might be interested in
Which is sign that work is being done
Mrac [35]

An$$$$$$$$$$$

Explanation:

3 0
2 years ago
Read 2 more answers
1. What is the apparatus used to measure production in plants ?
Gennadij [26K]

Answer: Auxanometer

Explanation:

An auxanometer (Gr. auxain= "to grow" + metron= "measure") is an apparatus for measuring the increase of growth in plants. Sensitive auxanometers allow measurement of growth as small as a micrometer, which allows measurement of growth in response to short-term changes in atmospheric composition.

I hope this helps!

5 0
2 years ago
Read 2 more answers
Which of the following best describes exothermic chemical reactions?<br>​
zlopas [31]
They always release heat
3 0
3 years ago
C(s) + S8(s) → CS2(l)
Vanyuwa [196]
The balanced chemical reaction is written as:

<span>4C(s) + S8(s) → 4CS2(l)

We are given the amount of carbon and sulfur to be used in the reaction. We need to determine first the limiting reactant to be able to solve this correctly.

</span>7.70 g C ( 1 mol / 12.01 g) =0.64 mol C
19.7 g S8 ( 1 mol / 256.48 g) = 0.08 mol S8

The limiting reactant would be S8. We use this amount to calculate.

0.08 mol S8 ( 4 mol CS2 / 1 mol S8 ) ( 256.48 g / 1 mol ) = 78.8 g CS2
4 0
3 years ago
Convert 15.2 moles of K to atoms of K.
choli [55]

Answer:

\boxed {\boxed {\sf 9.15*10^{24} \ atoms \ K}}

Explanation:

To convert atoms to moles, Avogadro's Number must be used: 6.022*10²³.

This tells us the amount of particles (atoms, molecules, etc.) in 1 mole of a substance. In this case it is the atoms of potassium. We can create a ratio.

\frac {6.022*10^{23} \ atoms \ K }{ 1 \ mol \ K }

Multiply by the given number of moles: 15.2

15.2 \ mol \ K *\frac {6.022*10^{23} \ atoms \ K }{ 1 \ mol \ K }

The moles of potassium cancel.

15.2 *\frac {6.022*10^{23} \ atoms \ K }{ 1 }

The denominator of 1 can be ignored.

15.2 * {6.022*10^{23} \ atoms \ K }{

Multiply.

9.15344*10^{24} \ atoms \ K

The original measurement of moles has 3 significant figures, so our answer must have the same. For the number we calculated that is the hundredth place. The 3 in the thousandth place tells us to leave 5.

9.15*10^{24} \ atoms \ K

In 15.2 moles of potassium, there are <u>9.15*10²⁴ atoms of potassium.</u>

3 0
2 years ago
Other questions:
  • 1. In any nuclear reaction, nuclei are transformed in some way.
    12·2 answers
  • HELP me, this question not even really hard actually...
    12·1 answer
  • When making a fire, without gas, matches, or a lighter, what are two important things about the wood?
    10·2 answers
  • Cassandra looked out the window. She saw a boy moving down through the air.
    9·2 answers
  • Which of the following statements is true?
    7·1 answer
  • Which of these energy resources does NOT pollute when used?
    8·1 answer
  • What are the most elements of the periodic table?
    10·1 answer
  • Ryan just joined the track team. He runs the 40 yard dash in 6.4 seconds. Explain three human body systems that work together to
    8·1 answer
  • How many grams of potassium chloride (KCI) are needed to prepare 0.750 L of a 1.50 M solution of potassium chloride in water?​
    11·1 answer
  • 50 trillion (5.00 x 1013) Angstrom is equivalent to 10900 cubit. If 108 Angstrom = 1 cm (exactly), how many m are there in 1.00
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!