 admin # A family is another name for a on the periodic table of elements.

2 months ago

## Solution 1 Guest #2393247
2 months ago

False

Explanation:

## 📚 Related Questions

Question
What is the percent composition of potassium in KNO3
Solution 1

38.6%

Explanation:

Molar mass of KNO3 is

=39+14+(16*3)

=53+48

=101 g/mol

Now

Percentage composition of potassium in KNO3 is=(atomic mass of K*no. of atoms)/molar mass of KNO3 *100%

%age composition of K= (39*1)/101 *100%

=0.386*100%

=38.6%

Solution 2

Element     Symbol      Mass Percent

Nitrogen          N                   13.854%

Oxygen          O                   47.474%

Potassium        K                   38.672%

Hope you have a beatiful day!

sincerley

~Angoraspinner (AKA jack)

Question
A student places a battery in a beaker of salt water and sees bubbles rise from the terminals. Researching which question could help explain this observation? (3 points) A)What is the composition of the gas bubbles? B)What is the size of the c)beaker that is used? D)What is the voltage of the battery? What is the volume of water in the beaker?
Solution 1

Answer: What is the composition of the gas bubbles?

Explanation: Test taken and verified the answer.

Solution 2

Answer is: D the temperature of the water in each beaker

If you find this helpful, Mark me as brainlyiest!

Question
You've made the hypothesis that the less rainfall a cactus plant gets, the taller it will grow, since cactuses like dry conditions. What should be the dependent variable in an experiment designed to test this hypothesis? A. the height of the cactus plants B. the hours of sunlight the cactus plants get C. the amount of rain falling on the cactus plants D. the type of soil the cactus plants are growing in
Solution 1

b

Explanation:

because since the cactus likes dry environments, you are supposed to measure the amount of sunlight the plant absorbs

hopes this helps :)

Question
What is the si unit of current
Solution 1

Ampere

Explanation:

The system.international unit of current is ampere.

Solution 2

SI unit of electric current is Ampere

Explanation:

The unit described by System International (SI) for electric current is Ampere which is denoted by symbol A.

1 Ampere= 1 coulomb / sec

1 ampere current is drawn when 1 Coulomb of charge passes through a conductor in 1 sec,

Question
What is the si unit of current
Solution 1

Ampere

Explanation:

In SI system of measuring quantities, the unit of current is ampere

Solution 2

SI unit of current is ampere

Explanation:

Question
Why is the unsaturated zone not filled with water ​
Solution 1

The answer is (D) It is permeable and water flows through it. I took the test and the answer was (D).

hope it helps

Solution 2

The unsaturated zone is also called as vedose zone. It is a zone that lies above the ground water table. It includes the subsurface layers of soil. ... Hence, this can be said that unsaturated zone is not filled by water because it is permeable and water flows through it.

Explanation:

Question
PLS HURYYY ILL GIVE BRAINLIEST You buy a balloon at the grocery store and walk outside into -10F temperatures. what happens to the balloon? the balloons temp increses the vol increases the vol decreases the vol stays the same
Solution 1

The volume increases when the balloon temperature increases.

Explanation:

-10 F is converted into Kelvin as 249 K.

0°C is nothing but 0+ 273 = 273 K

And the room temperature is 25°C which is converted into Kelvin as 273 + 25 = 298 K.

249 K is below room temperature.

As per the Charles' law volume and temperature are directly proportional to each other, when the pressure of the gas remains constant.

V ∝ T

As the balloon temperature increases, the volume also increases.

Question
Which of the following statements is true of enzymes ??? A.they change shape after a reaction B. They don’t provide an active site for substrates to bind in a reaction C. They’re unusable after a reaction D. They act on a specific type of substrate in a reaction
Solution 1

D

Explanation:

Every enzyme has a specific substrate to bind with.

E.g.

Protien is broken down by protease enzyme

Question
You buy a balloon at the grocery store and walk outside into -10F temperatures. what happens to the balloon? the balloons temp increses the vol increases the vol decreases the vol stays the same
Solution 1

Here -10F represents a colder temperature. The concept charle's law is used here. When we walk outside into -10F temperatures the volume of the balloon decreases. The correct option is C.

### What is charle's law?

The Charle's law states that at constant pressure, the volume of a given mass of gas is directly proportional to the temperature on Kelvin scale. The law can be mathematically expressed as:

V = constant × T or V/T = constant

If we take a balloon outside on a cold winter day, which means in a very low temperature, the volume of the gas inside the balloon also decreases due to the very low temperature.

The Charle's law can also be explained as follows: At a particular temperature which is called the absolute zero, the volume of all gas will become zero. This temperature is - 273°C.

Thus the correct option is C.

To know more about charle's law , viist;

brainly.com/question/16927784

#SPJ2

Solution 2

Answer: the volume stays the same

Explanation:

Question
What form of energy does a compressed spring have? A) heat energy B) kinetic energy C) chemical energy D) potential energy
Solution 1

D) Potential Energy

Explanation:

The compressed spring has elastic potential energy. If it is allowed to de-compress, the elastic potential energy will be converted to kinetic energy.

Solution 2

D

Explanation:

Potential energy because a compressed spring has the energy possessed due to position and when the spring is allowed for rarefaction the energy is changed to kinetic energy

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