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
ioda
3 years ago
7

If 167 cm2 of leather is stitched together to make a baseball, what is the radius of the baseball?

Chemistry
1 answer:
Lubov Fominskaja [6]3 years ago
3 0

The radius of the baseball is 3.65 cm

<h3>Mensuration</h3>

From the question, we are to calculate the radius of the baseball.

A baseball is spherical.

From the given information,

167 cm² of leather is stitched together to make a baseball. This means the surface area of the spherical baseball is 167 cm².

From the formula for calculating the surface area of a sphere,

S.A = 4\pi r^{2}

Where r is the radius of the sphere

Then, we can write that

167 = 4 \pi r^{2}

r^{2} =\frac{167}{4\pi}

r^{2} = 13.2894

Then,

r = \sqrt{13.2894}

r = 3.65 \ cm

Hence, the radius of the baseball is 3.65 cm

Learn more on mensuration here: brainly.com/question/10171109

You might be interested in
how do i solve these equations using proust's law? we haven't gone over balancing chem equations in class and our teacher doesn'
kow [346]

Answer:

Explanation:

Ok so Proust's Law, better known as the Law of Definite Proportions, states that the components of a compound always exist in a fixed ratio. This means that it does not matter what the source of the components are nor the coefficients in front of them. The ratio your teacher is referring to is most likely mass percent/ percent composition. This ratio is the amount of the component over the amount of the entire compound times 100%.

*I am not very familiar with this law so please do with my answers what you will :)*

7.)

First, you want to find the percent composition (aka mass composition) of Na in NaCl.

 45.89 g Na
---------------------  x 100%  =  39.3%
116.89 g NaCl

So, there must be 39.3% sodium in NaCl. You can find how much chlorine is in NaCl by subtracting that percent by 100 (to find the percent composition of chlorine) then multiplying it by the mass.

100% - 39.3% = 60.7%

60.7% / 100 = 0.0607

116.89 g NaCl x 0.0607 = 70.91 g Cl₂

You could also just subtract the mass of sodium from the mass of sodium chloride to find the mass of chlorine.

116.89 g NaCl - 45.89 g Na = 71 g Cl₂

8.)

10.57 g Mg + 6.96 g O₂ = 17.53 g MgO

  6.96 g O₂
---------------------  x 100%  = 39.7% O₂
17.53 g MgO

9.)

6.46 g Pb = 1 g O₂

68.54 g Pb  =  28.76 g O₂

68.54 g Pb / 28.76 g O₂ = 2.83 g ≠ 6.46 g

No, the two samples are not the same because the proportion of lead to oxygen is not the same for both samples. In the first sample, there is 6.46 g lead for every oxygen. In the second sample, there is 2.38 g lead for every oxygen.

6 0
2 years ago
A compound that changes color when it is in contact with an acid or base is called
malfutka [58]
It's called a pH indicator.
4 0
3 years ago
HELP ASAP!! THIS IS DUE TOMORROW!! I WILL MARK YOU AS A BRAINLIEST IF ANSWERED NOW!! <br><br> #1-7
gayaneshka [121]
O two gained
Fe three lost
Br one gained
Ni two lost
K one lost
F one gained
P three gained
-=gained as electrons have a negative charge
+=lost electrons
7 0
3 years ago
A balloon is filled with 3.0 l of helium at 20oc. at what temperature will the balloon be one-half that volume (1.5 l
timama [110]

<span>Answer<span>1. A certain mass of gas in a 2.00 L container has a pressure of 164 kPa. Calculate the new pressure of the gas if the volume of the container is reduced to 1.00L</span></span>
7 0
3 years ago
C6h5-c=o-ch3 + br2/oh
Natali [406]

Explanation:

here's the molecule you were looking for

4 0
3 years ago
Other questions:
  • He partial pressure of oxygen gas in our atmosphere is 0.21 atm. this is the partial pressure at which human lungs have evolved
    12·1 answer
  • A crew of six astronauts from the United States and other countries live on the _and conduct space research hoping to have posit
    8·2 answers
  • Which idea did john dalton include in his atomic theory
    13·2 answers
  • If the uncompressed gas in the above system has a volume of 300.0 mL at a pressure of 20.0 kPa, what is the volume of the gas wh
    6·1 answer
  • Mole fraction of the solute in a 1.00. What is the molal aqueous eqaution?
    10·1 answer
  • How are changes in populations related to the availability of an ecosystem's resources?
    5·1 answer
  • The most common carbonate rock is A) dolomite. B) halite. 35) C) limestone. D) calcite.
    13·1 answer
  • In this reaction, how does the rate of forward reaction vary with the concentration of the product? 2H2S(g) ⇌ 2H2(g) + S2(g) It
    12·2 answers
  • How do sea breezes and land breezes affect local weather
    12·1 answer
  • What are different types of bacteria classified?​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!