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kap26 [50]
3 years ago
5

Why does pumping more air into a basketball increse the pressure inside the ball?

Chemistry
1 answer:
scoundrel [369]3 years ago
8 0
Think of it as a balloon when you pump air into it it grows bigger but, if you put too much air into it what happens it pops because the pressure was too much for the balloon to withhold. That's the same with a basketball when you pump air into it the pressure pushing on the material increases.    <span />
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Why are sodium (Na) and potassium (K) in the same group on the periodic table?​
Artyom0805 [142]

Explanation:

Sodium and potassium are in the same group on the periodic table because they both have similar number of valence electrons (1 electron) in their shells

Na = 2,8,1

K = 2,8,8,1

7 0
2 years ago
Physical Changes
Talja [164]
C. Physical changes do not change the identity of a substance, only the physical appearance such as shape or form. If you break a pencil in half, it is still composed of the same material and therefore keeps its identity as the substance it was before the physical change. Phase changes, such as ice melting, is also a physical change because it changes form. But ice is still made of H20 just like water and steam are comprised of H20.
7 0
3 years ago
But please I need this answer fast and if you don't know it don't answer it D.​
vampirchik [111]

Answer:

its just a chromosome getting ready to split in a cell, Its called the telophase and its copying itself for the mother and daughter cell

8 0
3 years ago
Are preferred because the results can be generalized to a larger population.
ryzh [129]

The most appropriate word among the group of answer choices to fill in the blank is: a. Random sample surveys.

Sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.

The various types of sampling used by researchers includes the following;

  • Systematic sampling.
  • Convenience sampling.
  • Stratified sampling.
  • Cluster sampling.
  • Random sampling.

A random sample survey is also referred to as a simple random sample (SRS) and it can be defined as a sampling technique that involves randomly selecting a subset of a larger population. Also, any result obtained through the use of a random sample survey can be generalized and applied to a larger population.

In conclusion, scientists and researchers prefer random sample surveys because their results can be generalized to a larger population.

Find more information: brainly.com/question/17090308

5 0
3 years ago
Calculate the pH of 0.005 methonoic acid solution given that the degree of dissociation is 0.057​
BigorU [14]

Answer:

pH = 2.77

Explanation:

Data Given:

degree of dissociation Ka = 0.057

Concentration of Methanoic acid = 0.005 M

pH = ?

Solution:

First we calculate Hydrogen ion concentration

Formula will be used

             [H⁺] = \sqrt{Ka . c} . . . . . . (1)

where

Ka = degree of dissociation

c = concentration

Put values in formula 1

                        [H⁺] = \sqrt{0.057 * 0.005M} . . . . . . (1)

                        [H⁺] = 0.0017 M

Now Calculate the pH

As we know

          pH = -log [H⁺] . . . . . .(2)

Put values in equation

           pH = - log [ 0.0017 M]

           pH = - [-2.77]

           pH =    2.77

So,

pH of methanoic acid =    2.77

5 0
3 years ago
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