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
Ira Lisetskai [31]
3 years ago
10

A pool is 44.6 m long and 27.6 m wide. If the average depth of water is 8.80 ft, what is the mass (in kg) of water in the pool?

Enter your answer in scientific notation.
Chemistry
1 answer:
ASHA 777 [7]3 years ago
3 0

Answer:

  • <em><u>3.30 × 10⁶ kg</u></em>

Explanation:

The form of the pool may be approximated to a reactangular prism with height equal to the average depth of water.

<u>1) Dimensions:</u>

  • Length: 44.6 m
  • Wide: 27.6 m
  • Height: 8.80 ft

<u>2) Volume formula</u>

  • V = length × width × height

<u>3) Unit conversions</u>

Convert 8.80 ft to meters:

  • 1 ft = 0.3048 m ⇒ 1 = 0.3048 m/ft

  • 8.80 ft × 0.3048 m/ft = 2.68 m

<u>4) Volume calculation</u>

Substitute the numbers in the formula:

  • V = length × width × height = 44.6 m × 27.6 m × 2.68 m ≈ 3,298.97 m³ ≈ 3,300 m³ (it is rounded to three significant digits)

<u>5) Mass of water:</u>

  • Density = mass / volume ⇒ mass = density × mass
  • Density of water = 1,000 kg / m³
  • mass = 3,300 m³ × 1,000 kg / m³ = 3,300,000 kg

<em><u>6) Scientific notation</u></em>

Choose the correct number of significant figures:

  • Since the three given factors have 3 significant figures, the correct number of significant figures of the volume and the mass is 3.

The mass must be expressed as a power of ten. The mantissa contains only the significant digits, and the number before the decimal point can only have one digit 1 through 9.

  • 3,300,000 kg =  3.30 × 10⁶ kg
You might be interested in
How many atoms are in 15.6 grams of silicon?
Andreas93 [3]

Answer:

3.34 x 1023 atoms

Explanation:

6 0
2 years ago
Help with enthalpy please!!! <br><br> CH4(g)+O2(g)-&gt; H2O(g)+CO2(g)
Fofino [41]
It says Methane+Oxygen forms Water+Carbon dioxide and everything is in gaseous state.
CH4+2O2->2H2O+CO2
4 0
3 years ago
Read 2 more answers
The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is _____________.dec
Zepler [3.9K]
Here is your answer:

Your answer is A decreasing.

Reason: That's because when your turning into a solid your not moving and kinetic energy is the around of movement an object is moving.

Your answer is A.
8 0
3 years ago
Select ALL that apply for how to name a BINARY acid. *
Ne4ueva [31]
I would say “ends with -ic” , “starts with hydro”,
7 0
3 years ago
Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g C2H2?
Alekssandra [29.7K]
 <span>(a) The balanced equation shows that 2 moles of water result from 5 moles of 
oxygen that reacts, so that is 0.4 times as many moles of water as O2. So if we 
have 2.50 moles of oxygen reacting, we produce 0.4 times that amount, or 
1.0 mole of water. 
(b) The molecular weight of acetylene is 26 and that of O2 is 32, so we can set 
up the proportion: 2.25 gm. / 52 = x gm. / 160 
Then x grams = (2.25)(160) / 52 = 6.923 grams of O2 are required. 
(c) The balanced equation shows that twice as many moles of CO2 are produced 
as we have acetylene reacting. If 78.0 grams of acetylene react, that is 3 moles 
so we produce twice that, or 6 moles of CO2. The molecular weight of CO2 is 44, 
so we have 44 times 6, or 264 grams of carbon dioxide produced. 
(d) If we collect 186 grams of CO2, the percentage yield is: 
186/264 = 0.7045, or 70.45 percent yield. 
Whew! Hope this answers all parts of your question!</span><span>
</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is it with the name Sara these days!? XD
    9·1 answer
  • Solution 1 consists of 80% benzene and 20% toluene. Solution 2 consists of 30% benzene and 70% toluene. a) How many mL of Soluti
    8·1 answer
  • HELPPPPPP PLZZZz i'll mark brainliest! Infrared (IR) and ultraviolet (UV) light. But above 29°C, the coating on the glass underg
    8·1 answer
  • What are three ways that we can identify when a chemical reaction is occurring?
    6·1 answer
  • 3. What do platelets do?
    15·1 answer
  • Based on the given information, which of the following is the students' correct conclusion about their experiment?
    5·1 answer
  • What kinds of things can we learn by studying atoms?​
    15·1 answer
  • The interaction of the skeletal and muscular systems to create movement and locomotion is regulated by which organ system?
    11·1 answer
  • 1. If there are 100 navy beans, 27 pinto beans and 173 blackeyed peas in a container, what is the percent abundance in the conta
    15·1 answer
  • How many moles of nacl are needed to make 5.2l of a 2m solution
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!