Please help I’ll give you guys brainiest!


Thank youuuuuuu :))

Answer:

option A.car tyres be

Explanation:

Answer: 3.2x10^23

Explanation:

Start by finding the molar mass of aluminum.

Then turn  grams into moles by dividing grams of substance by molar mass. 1.4g÷26.98g

Then multiply that by 6.022x10^23 atoms. 0.0519x6.022x10^23

You can use dimensional analysis to solve this type of problem.

Answer:

When the temperature of an object increases, the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.

Explanation:

BTW I GOT THE ANSWER FROM KRISTINA

The thermal energy of a system is the amount of heat energy in it.

One way to change thermal energy is by alter the system by introducing a new object to the system.

The thermal energy of a system is calculated using:

[tex]E = \frac 12 mc\theta[/tex]

Assume the mass of the system remains unchanged.

When an object is introduced to the system, the thermal energy becomes:

[tex]E_2 = \frac 12 mc(\theta + \alpha)[/tex]

Where:

[tex]\alpha \ne 0[/tex] --- the temperature of the object.

Expand:

[tex]E_2 = \frac 12 mc(\theta) + \frac 12 mc (\alpha)[/tex]

Substitute: [tex]E = \frac 12 mc\theta[/tex]

[tex]E_2 = E + \frac 12 mc (\alpha)[/tex]

This means that the thermal energy of the system will change by the thermal energy of the object that is being introduced to the system.

Hence, one way the thermal energy can be changed is to introduce a new object (or matter).

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Answer:

0.00031311017345051

Answer:

34 neutrons.

Explanation:

Hope this helps!!

Answer:D

Explanation:

Answer:

C) adding 16 oz. of water to the marinating liquid

Explanation:

Adding 16 oz. water to the marinating liquid would decrease the concentration of the marinating liquid and slow down the rate of reaction. The other answer choices would increase the rate of reaction.

Answer:

body skin health

Explanation:

Answer:

A mole of horses would be Avogadro number of horses (a lot actually !). Avogadro number is 6.023 x 10(23). A mole of H (hydrogen) atoms contains 6.023 x 10(23) H atoms. A mole of H2 molecules contains 6.023 x 10(23) H2 molecules or 2 moles of H atoms (since each molecules has 2 atoms).

Explanation:

Answer:

A mole (mol) is the amount of a substance that contains 6.02 × 10 23 representative particles of that substance. The mole is the SI unit for amount of a substance. Just like the dozen and the gross, it is a name that stands for a number. There are therefore 6.02 × 10 23 water molecules in a mole of water molecules.

Explanation:

Answer:

The answer is crystallisation

Answer:

have a good day

Explanation:

1.The Sun, Earth, and Moon are aligned with the Earth in the middle and the Moon furthest away from the Sun.

Answer:

higher temperature, more kinetic energy, more space between particles, higher volume

This is true because increase in temperature kinetic energy increase so molecules move apart and increase volume

Explanation:

Answer:

type of front formed when a warm air mass pushes a cold air mass, forcing the warm air to slide over the cold air.

Answer:

A Punnet Square...the second I am not sure.

Explanation:

Unfortunately the second could be many things. You'd have to have more background information.

Answer:

PUNNETT....,MAKE SURE U HAVE 2 T,s

Explanation:

punnett and cross

Answer:

well i would say yes because how the factory made the air bad and how they all were fighting just about a tree

Explanation:

Answer: LOL XD no because of CO/VID

Explanation: BRAINLIEST PLS LOL

Answer:

A

Explanation:

because the atomic radius reduced by loosing one energy level leading to a positive ion in the resulting ion

The study of chemicals and their bond is called chemistry.

The correct answer is A.

The metals have the property to lose electrons to become stable compounds.

In magnesium, the total number of electrons is 12. In a valance shell, they have 2 electrons.

when they lose or donate the two electrons to the other. The outer shell will be empty and the force of the nucleus remains in the inner shell.

The loss of electrons leads to a decrease in the size of an atom and form positive ions.

Hence, the correct answer is A that is a Positive ion with a smaller radius.

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Explanation:

[tex](.0000360 gAu} )\frac{1molAu}{196.96gAu}= ? mol Au[/tex]

Answer:

please mark as brainliest!!

Explanation:

// C++ program to print initials of a name  

#include <bits/stdc++.h>  

using namespace std;  

void printInitials(const string& name)  

{  

   if (name.length() == 0)  

       return;  

   // Since touuper() returns int, we do typecasting  

   cout << (char)toupper(name[0]);  

   // Traverse rest of the string and print the  

   // characters after spaces.  

   for (int i = 1; i < name.length() - 1; i++)  

       if (name[i] == ' ')  

           cout << " " << (char)toupper(name[i + 1]);  

}  

// Driver code  

int main()  

{  

   string name = "prabhat kumar singh";  

   printInitials(name);  

   return 0;  

}

Answer:

#include<iostream>

using namespace std;

int main(){

char str[20];

int i=0;

std::cout<<"Enter a name:" ;

cin>>str;

cout<<*str;

while(str[i]!='\0'){

if(str[i]==' '){

i++;

cin>>*(str+i);

}

i++;

}

return 0;

}

Answer:

I believe you said that I would get brainlest if I answer!

Explanation:

A translucent material scatters the light that passes through it. You can usually see something behind a translucent object, but the details are blurred. Wax paper and frosted glass are translucent materials. A material that reflects or absorbs all of the light that strikes it is called opaque.

A loss of negatively-charged electrons corresponds to an increase in oxidation number, while a gain of electrons corresponds to a decrease in oxidation number. Therefore, the element or ion that is oxidized undergoes an increase in oxidation number.

Hope this helped

Answer:

the ice has reached its melting point

the water has reached its freezing point

the whatever that is has reached its cooling point I guess

Answer:A chemical reaction?

Explanation:let me be

Answer:

Matter says that the amount of matter stays the same, even when matter changes form. Sometimes it may seem that matter disappears during a science experiment, but this law tells us that matter cannot magically appear or disappear, it simply changes from one form to another.

Explanation:

brainliest?

Answer: Hope this helps:)

The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. The law of conservation of matter states that in any given system that is closed to the transfer of matter, the amount of matter in the system stays constant. The law of conservation of matter says that in chemical reactions, the total mass of the products must equal the total mass of the reactants. French chemist A. Lavoisier laid the foundation to the scientific investigation of matter by describing that substances react by following certain laws. These laws are called the laws of chemical combination. Matter says that the amount of matter stays the same, even when matter changes form. Sometimes it may seem that matter disappears during a science experiment, but this law tells us that matter cannot magically appear or disappear, it simply changes from one form to another. Matter can change form through physical and chemical changes, but through any of these changes, the matter is conserved. The same amount of matter exists before and after the change—none is created or destroyed. This concept is called the Law of Conservation of Mass.

Answer:

C. The enthalpy of a reaction is the sum of the enthalpies of intermediate reactions.

Explanation:

The heat of any reaction  ΔH∘f  for a specific reaction is equal to the sum of the heats of reaction for any set of reactions which in sum are equivalent to the overall reaction.

Answer:

Troposphere, stratosphere, mesosphere, and thermosphere.

Explanation:

Troposphere - It is the lowest region of the atmosphere, extending from the earth's surface to a height of about 3.7–6.2 miles (6–10 km), which is the lower boundary of the stratosphere.

Stratosphere - It is the layer of the earth's atmosphere above the troposphere, extending to about 32 miles (50 km) above the earth's surface (the lower boundary of the mesosphere).

Mesosphere - It is the region of the earth's atmosphere above the stratosphere and below the thermosphere, between about 30 and 50 miles (50 and 80 km) in altitude.

Thermosphere - It is the region of the atmosphere above the mesosphere and below the height at which the atmosphere ceases to have the properties of a continuous medium. The thermosphere is characterized throughout by an increase in temperature with height.

Answer:

The First layer is the troposphere. The troposphere is what we live in. It creates weather for us. Second layer is the Stratosphere. You will find the ozone layer in it. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us. Life as we know it wouldn't be possible without this layer of protection. Third layer is Mesosphere. The Mesosphere is very important for earth's protection. The mesosphere burns up most meteors and asteroids before they are able to reach the earth's surface. Fourth layer is Thermosphere. The Thermosphere absorbs the sun radiation making it very hot.

Explanation:: I don't know if you include this one but the fifth layer is the Exosphere. Although the exosphere is the most distance layer of earth's atmosphere it is the layer that is the planet's first line of defense against the sun's rays. It is also the first layer to come into contact and protect the earth from meteors, asteroids, and cosmic rays.

Answer:

true

Explanation:

Answer:

False

Explanation:

Since when did Solar flares can affect how machines on Earth work that is negitive they have never affected how our machines work

Answer:

Calcium carbonate is a dietary supplement used when the amount of calcium taken in the diet is not enough. Calcium is needed by the body for healthy bones, muscles, nervous system, and heart. Calcium carbonate also is used as an antacid to relieve heartburn, acid indigestion etc.

... yes I copied this from the internet, but hope it helps !

Answer:

a\c enables the protons so therefore we duplicate the neutrons making for the first one 80 squared then subtracted by 201 and then do that for all

Answer:

a

Explanation:

uh process of elimination

Temperature change, phase change to liquid or gas are all physical changes not chemical reactions. A color change indicates a chemical reaction has taken place.

Chemical changes are taking place by the breaking or making of chemical bonds. It results in the formation of a new product which is having different properties than the initial substances.

Physical changes does not involve any change in chemical bond. Phase changes, change in size, shape, conductivity, solubility etc. are physical changes. A change in temperature phase conversion into gas or liquid are all physical changes.

A change in color indicates that a new product is formed there. For  example reddish brown rust is iron oxide formed by the reaction of Fe with oxygen. Therefore, option c is correct.

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Answer:

The nervous system consists of the brain, spinal cord, sensory organs, and all of the nerves that connect these organs with the rest of the body. Together, these organs are responsible for the control of the body and communication among its parts.

Brain, spinal cord, retina, sensory neurons, ganglia, as well as nerves are the primary organ of the nervous system.

Nervous system: a network of organized cells with the specific purpose of carrying electrochemical inputs from sensory receptors to the location where a reaction takes place.

Every living thing has the capacity to recognize changes in both its own surroundings and outside it. Changes in the inner environment include those in the posture of the head and limbs as well as those in the internal organs, whereas changes in the exterior environment include those in light, temperature, sound, motion, as well as odor. The nervous system's organs include the brain, spinal cord, retina, sensory neurons, ganglia, as well as nerves.

Therefore,  brain, spinal cord, retina, sensory neurons, ganglia, as well as nerves are the primary organ of the nervous system.

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