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
vesna_86 [32]
3 years ago
10

A pile of marbles weigh 394.80 g. 10 marbles weigh37.60 g. How many marbles are in the pile?​

Chemistry
1 answer:
Valentin [98]3 years ago
4 0

Answer:

10=37.60g

???=394.80g

<u>10</u><u>×</u><u>394</u><u>.</u><u>80</u>

37.60

=105marbled

You might be interested in
If your creating a machine that will clean up trash from the ocean is that adding or removing thermal energy?
bogdanovich [222]

Answer: adding

Explanation:

Because it takes thermal energy to power it

6 0
4 years ago
The first law of thermodynamics is observed when
krek1111 [17]

Answer:

Explanation:

The first law of Thermodynamics is known as Conservation because it explains that energy is always maintained within a closed system and cannot be created or destroyed. Therefore, this is observed when there is no longer change in temperature in a system. Mainly because the energy is not being transferred to and from another system. Without this transfer of energy, the energy itself gets conserved within the system and the temperature no longer fluctuates.

8 0
3 years ago
Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below.
zavuch27 [327]

15.63 mol. You need 15.63 mol HgO to produce 250.0 g O_2.

<em>Step 1</em>. Convert <em>grams of O_2 to moles of O_2</em>

Moles of O_2 = 250.0 g O_2 × (1 mol O_2/32.00 g O_2) = 7.8125 mol O_2

<em>Step 2</em>. Use the molar ratio of HgO:O_2 to convert <em>moles of O_2 to moles of HgO </em>

Moles of HgO = 0.8885 mol O_2 × (2 mol HgO/1 mol O_2) = <em>15.63 mol HgO</em>

7 0
4 years ago
Read 2 more answers
after a chemistry student made a AgNO3(small 3 at bottom) solution., she wanted to determine the molar concentration of it. if 2
Alexxandr [17]
Molar concentration = (numbet of mol Solute)/ ( volume Solution)

1) Finding
 the number of the mol solute

22.0 g AgNO3 * \frac{1 mol AgNO3}{169.91 g AgNO3} = 0.129 mol AgNO3&#10;&#10;2) 725 ml = 0.725 L&#10;&#10;&#10;

3) Molarity = \frac{number/ mol/solute}{Volume/solution} = \frac{0.129}{0.725} &#10;&#10;

Molarity= \frac{0.178 mol}{L} , &#10;&#10;or 0.178 M&#10;


3 0
4 years ago
Which of the following is generally true of female bones in relationship to male bones?
gtnhenbr [62]
What are the options
6 0
3 years ago
Other questions:
  • Physical activity and exercise typically lead to __________.
    15·2 answers
  • A 50.0 mL sample if 0.0500 M Ca(OH)2 is added to 10.0 mL of 0.0200M HNO3. How many miles of excess acid or base are present?
    12·1 answer
  • Which solution is most dilute?
    8·1 answer
  • A metallic substance separates into different metals when heated to certain temperatures. This substance may be an
    6·1 answer
  • How would the graph change if a catalyst were used
    11·1 answer
  • Help Asap plz Thx giving lots of points!!!
    7·1 answer
  • Which is a substance that is made up of only one type of atom?
    5·2 answers
  • A _ is a substance with a pH greater than 7
    6·1 answer
  • Select True or False.<br> The Sun is like the stars we see at night.<br> False<br> True
    13·2 answers
  • Elements 3 to 10 (Li to Ne) show a more or less steady increase in IE. What does this tell you about the energy level that each
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!