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Otrada [13]
3 years ago
14

__________are gained or lost to make a molecule more stable; they may also be shared,as in covalent bonds.

Chemistry
1 answer:
andriy [413]3 years ago
6 0
The answer is B valance electrons
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Use the periodic table to determine which of the following could be an isotope of indium (In). Check all that apply. Z = 49, A =
Anastasy [175]

The isotopes are the elements with same atomic number but different atomic mass or mass number

The mass number is denoted by Z

The mass number is denoted by A

The number of neutrons = N

We know that for an element

A = Z + N

As given the element is indium , its atomic number = Z = 49

Z = 49, A = 113 N = 64,  This could be an isotope of indium

Z = 49 N = 61, A = 113 , this could also be an isotope of indium

A = 110, N = 49 it means Z = Z - N = 110-49 = 61 So this is not isotope of indium

6 0
4 years ago
Read 2 more answers
Draw the location of the epicenter of an earthquake in Carmona, Silang,GMA Cavite if the hypothetical distance of epicenter in C
stellarik [79]

The kinematics and geometry can locate the point where the earthquake occurs: Point of interception of the three circles

The earthquakes occur due to a sudden movement of two tectonic plates, this movement produces longitudinal and transverse waves with different speeds, called S and P waves. The speed of the waves is constant, so we can use the uniform kinematic movement relationship

           v = d / t

Where v is the speed of the wave, d is the distance and t is the time.

The speed of the two types of waves is known, they depend on the material and type of wave varies between 4 and 7 km / S, the time is measured in the seismometers, for which we can calculate the distance.

For a seismometer, the calculated distance corresponds to a circle, so to locate the epicenter of the earthquake we must have a minimum of three earthquakes, the point of intersection of the circles is the place of occurrence of the event, see the attachment for a diagram of the process.

In conclusion, with kinematics and geometry we can locate where the earthquake occurs: Point of interception of the three circles

Learn more about Earthquakes here

brainly.com/question/11446551

4 0
3 years ago
Use this paragraph Carlon is using two wooden blocks to model the movement of Earth's plates He pushes one block forward and the
tensa zangetsu [6.8K]

Answer:

a

Explanation:

6 0
3 years ago
Why do soluble salts have to be made by titration, using an indicator?
Radda [10]
This technique can be used to make pure crystals of a soluble salt.
The burette is filled with hydrochloric acid.
A known quantity of alkali (say 50 cm3 sodium hydroxide)
is released from a pipette into the conical flask.
The tap on the burette is turned open to allow
the acid to be added drop by drop into the alkali.
The alkali contains an indicator (phenolphthalein)
which is pink in an alkali and colorless in an <span>acid.
</span>
When enough acid has been added to neutralize 
the alkali, the indicator changes from
pink to colorless. This is the end point of the titration.

The titration<span> can be repeated using the </span><span>same amounts
</span><span>of </span>acid<span> and </span>alkali<span> but </span>without<span> the </span>indicator.
<span>Pure salt</span> crystals<span> which are </span>free<span> from </span><span>indicator
</span><span>can then be crystallized </span><span> from the </span>neutral<span> solution.</span>



7 0
4 years ago
How can I get the 3 sig figs of this number 187515.4207
zimovet [89]

Answer:

1.88 x 10^5

Explanation:

You have to round because all of the numbers in 187515.4207 are significant

Round to: 188000

Put in scientific notation:

1.88 x 10^5

6 0
3 years ago
Read 2 more answers
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