someone help me with this question ASAP
Is the chemical equation 2Fe+3cl2=>2FeCl3 balanced?
Answer:
No, it is not balanced.
PLEASE HELP! DUE IN 5 MINUTES! ( 10 points )
An atom of gold with 79 protons, 79 Electrons and 118 neutrons would have a mass number of....
A) 39
B) 158
C) 197
D) 276
Answer:
C
Explanation:
An atom of gold with 79 protons, 79 Electrons and 118 neutrons would have a mass number of 197 gold. Therefore, option C is correct.
What is mass number ?The total number of protons and neutrons in an atomic nucleus is known as the mass number, often known as the atomic mass number or nucleon number. In atomic mass units, it is roughly equivalent to the atom's atomic mass.
Because it indicates the mass of the entire number of protons and neutrons in an element, the mass number of an element is so named. The atomic number and atomic mass of an element are typically listed in periodic tables along with the chemical symbols for each element.
The third element in the periodic table's eleventh column is gold. It is under the transition metal category. The most common isotope of gold has 118 neutrons and 79 protons together with 79 electrons.
Thus, option C is correct.
To learn more about mass number, follow the link;
https://brainly.com/question/4408975
#SPJ6
Which phrase describes the parts of a solution but NOT the parts of a heterogeneous mixture?
A.) evenly mixed
B.) chemically bonded
C.)always a single type of atom
D.) easily visible with a unaided eye
Answer:
c
Explanation:
A space shuttle is covered with two layers of carbon. The two layers are the same size and have the same number of molecules. When the space shuttle is sitting on the ground, the layers do not touch, as shown in the diagram above. When the space shuttle takes off, the layers move so that they are touching. Use the information in the diagram to answer the question.
How does the temperature of the outer layer compare with the temperature of the inner layer before the layers touch? What will happen after the layers have been touching for a while?
Answer:due to the heat of it the molicules expand and therefor touch also on rentry due to heat
Explanation:
The characteristics of the thermal transfer process allow to find the results for the questions regarding the temperature in the two cases are:
When the material is separated, the transfer is carried out by radiation, the internal temperature rises slowly. When the material is bonded, the heat transfer is carried out by conduction, the interior temperature rises rapidly.
Thermal conduction processes are mechanical by which thermal energy (temperature) is transported, they ask to be of three types:
Conduction. When there is no displacement of matter, the energy is transported by the agitation of the molecules. Convection. When matter is transported, very important for liquids and gases. Radiation. When there is no physical contact and the energy is transferred by the radiation of electromagnetic waves.
At the initial moment the two layers are not touching, therefore the only possible process is radiation, therefore the outermost body may be at a very high temperature and the inner body may be cold since radiation heating is the less efficient.
When the materials touch, the energy transfer process is thermal conduction, therefore the interior temperature will increase significantly. The thermal conduction process is one of the fastest, therefore the temperature rises rapidly.
In conclusion, using the characteristics of the thermal transfer process, we can find the results for the questions regarding temperature in the two cases are:
When the material is separated, the transfer is carried out by radiation, the internal temperature rises slowly. When the material is bonded, the heat transfer is carried out by conduction, the interior temperature rises rapidly.
Learn more here: brainly.com/question/3123993
What happens when two areas of air have different pressures?
Which statements are true of geothermal energy? Check all that apply.
It is constantly being produced inside the Earth.
Hot water from hot springs or reservoirs is used in heating systems.
It is created by energy from the Sun.
It can be used to generate electricity.
It can be unreliable because it is affected by the weather.
The United States is the world leader in generating power from geothermal energy.
Answer:
1,2,4,6
Explanation:
Answer:
The answer is 1,2,4, and 6 on edge2021
Explanation:
HELP ITS DUE TOMORROW
Help RRLY EASY I JUST DONT UNDERSTAND
Answer:
boomer
Explanation:
Mitochondria are very important to the cell and are sometimes called the powerhouses of the cell. Imagine that a certain virus penetrates a cell and reaches the mitochondria. Predict what would happen to the cell if the virus were able to destroy all of the cell's mitochondria.
A. The cell would eventually die without the ATP that it needs for activities
B. The cell would be unaffected by the loss of mitochondria and will continue to function normally
C. The cell would rapidly produce more proteins
D . The cell would multiple uncontrollably because there is nothing to stop it anymore.
Answer:
b
Explanation:
Use the chemical reaction to answer the question.
NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2
A student mixes baking soda (NaHCO3) and acetic acid (HC2H3O2) to produce a chemical reaction shown. Which statement about the reaction is correct?
(10 point)
The atoms of the reactants are regrouped during the reaction.
Some atoms gain mass after the reaction.
There are more H atoms after the reaction.
Atoms of Na are destroyed during the reaction.
During a chemical reaction, no atoms are destroyed or created. The change occurred in the given reaction is the regrouping of atoms of the reactants.
What is a chemical change?A change by which a bond between two atoms is created or breaks called chemical changes. All chemical and biological reactions are example of chemical changes.
According to law of conservation of mass proposed by Antoine Lavoisier mass is neither created nor destroyed. Thus the total mass in a reaction is conserved.
The mass in reactant side must be equal to the mass in the product side in a balanced reaction. Thus no atoms crated or destroyed.
Therefore, option A is correct, that is atoms are regrouped between reactants during a reaction to get new products with same mass as that in product side.
To learn more about chemical changes, refer the link below;
https://brainly.com/question/23693316
#SPJ2
If three different samples of a liquid have different compositions, then the liquid can be classified as *
A.) an element
B.) a mixture
C.) a substance
D.) a compound
According to the forces of attraction, if three different samples of a liquid have different compositions, then the liquid can be classified as a mixture.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
Learn more about forces of attraction,here:
https://brainly.com/question/2122941
#SPJ2
Laura and Jess observed two points, P and Q, on a number line. A number line is shown from negative 2 to positive 2 with increments of 2 over 8. A point P is shown at the fifth tick mark to the left of 0, and a point Q is shown at the fifth tick mark to the right of 0. Jess said that the absolute values of the numbers represented by the two points are different. Laura said that the absolute values of the numbers represented by the two points are the same. Which of the following explains who is correct?
Jess, because the points are of different signs
Jess, because the points are at different locations
Laura, because the distance between the two points is 10 over 8 units
Laura, because each of the two points is 10 over 8 units from 0
Answer:
P is 5 ticks to the left of 0, so it would be -5/8
Q is 5 ticks to the right of 0, so it would be at 5/8
an absolute value turns a negative number into a positive number
so absolute value of P located at -5/8 = 5/8
this is the location of point Q
Jimmy said that the absolute values of the numbers represented by the two points are the same.
so Jimmy is correct
Explanation:
What is chemical energy?
A Energy that is stored or released during a chemical reaction
B Energy that is destroyed during a physical change
C Energy that is released during a phase change
D Energy that is created when a substance is being burned
Answer:
A
Explanation:
Is a comet found between Mars and Jupiter
Please make sure you are correct
Thank you
HELP ITS DUE TOMORROW
Would’ve been easier to find this if u put the question on title
Answer:
1. 2 H2O + O2
2. NaBr + CaF2 = NaF + CaBr2
3.Ag + O2 = Ag2O
Explanation:
I hope this helps~~~
Why are gamma rays not affected by a magnet as they pass over it?
a) Gamma rays do not have enough mass to be affected.
b)Gamma rays do not have the right electrical charge to be affected.
c) Gamma rays are composed of only energy.
d) Gamma rays move too fast for anything to affect their pathway.
I think it's B
I hope I helped
Describe how the composition of the upper mantle is different from the lower mantle? The upper mantle is made of solid rocks and lower mantle is made of melted rocks and minerals The upper mantle is made of melted rocks and minerals and lower mantle is made of solid rocks The upper mantle is made of lava and the lower mantle is made of magma
Answer: The upper and lower mantle have very few differences but the lower mantle is more solid than the upper mantle.
Answer:
The upper and lower mantle differ from each other in location, temperature and pressure.
The upper mantle is made of melted rocks and minerals and lower mantle is made of solid rocks
help please, thank you !!
Answer:
5
Explanation:
Which form of energy is stored chemical energy and example of?
Kinetic energy
Potential energy
Gravitational energy
Powered energy
Answer:
D
Explanation:
I THINK. HOPE THIS HELPS
Read Solar Basics and use the information to answer the question.
What factors affect the amount of solar energy that reaches the Earth’s surface?
please write a 2-3 sentence answer then you get brainliest if its correct
Answer:
Weather, Time, and Altitude
Explanation:
The phase of matter can be changed by:
a) increasing temperature
b) decreasing mass
c) increasing volume
d) all of the above
Answer: A
Explanation: Mass and volume is the amount, amount doesn’t make the phase of a matter change.
Carlos is using the following images of a coal plant and a barbecue for his science investigation about chemical energy. Based on his observations, which statement most likely describes the conclusion of his investigation?
a coal plant
a barbecue
The images show examples of chemical energy being converted into heat and electrical energy.
The images show examples of mechanical energy being converted to heat energy.
The power plant and the barbecue convert electrical energy into chemical energy.
The power plant and the barbecue store heat energy and convert it to chemical and electrical energy.
I believe it is the first one, please correct me if I'm wrong.
Answer:
A
Explanation:
PLSSS HELP
The graph shows the distance traveled by a ball over a certain amount of time. According to the graph, between 2 and 4 seconds the ball was-
A. traveling at a constant speed.
B. increasing its speed.
C. changing its direction.
D. remaining at rest.
this is the portion of the electromagnetic spectrum that has a frequency just below the visible spectrum. (For number 8, the one that is highlighted.)
Answer:
these are very difficult dear
Explanation:
Which concept is a basis of the Declaration of Independence?
Answer:
Explanation:
Drafting the Declaration of Independence in 1776 became the defining event in Thomas Jefferson's life. Despite Jefferson's desire to return to Virginia to help write that state's constitution, the Continental Congress appointed him to the five-person committee for drafting a declaration of independence. That committee subsequently assigned him the task of producing a draft document for its consideration. Drawing on documents, such as the Virginia Declaration of Rights, state and local calls for independence, and his own draft of a Virginia constitution, Jefferson wrote a stunning statement of the colonists' right to rebel against the British government and establish their own based on the premise that all men are created equal and have the inalienable rights of life, liberty, and the pursuit of happiness.
Through the many revisions made by Jefferson, the committee, and then by Congress, Jefferson retained his prominent role in writing the defining document of the American Revolution and, indeed, of the United States. Jefferson was critical of changes to the document, particularly the removal of a long paragraph that attributed responsibility of the slave trade to British King George III. Jefferson was justly proud of his role in writing the Declaration of Independence and skillfully defended his authorship of this hallowed document.
what is the volume of a marble that has a mass of 3.g and a Density of 2.7 g/ml ?
make sure to round to the nearest tenth
Answer:
1.111 or since you want me to round 1.1 if not right let me know please.
Explanation:
Answer:
1.1
Explanation:
all you have to do is divide the mass by density to get the volume yurr
What's a compound?
What's an element?
whatss a mixture?
Answer:
Compound: any substance composed of identical molecules consisting of atoms of two or more chemical elements.
Element: is a pure substance which cannot be broken down by chemical means.
Mixture: is a substance which consist of two or more elements or compounds not chemically combined together.
How small are the microorganisms that live on and in the human body? Answer it in at least 1 paragraph
Answer: The human body contains trillions of microorganisms — dwarfing human cells by 10 to 1. Due to their little size, nonetheless, microorganisms make up just around 1 to 3 percent of the weight's (in a 200-pound grown-up, that is 2 to 6 pounds of microscopic organisms), yet assume a crucial function in human wellbeing. In 2016, a survey of over forty years of examination into the human microbiome found that there is zero logical proof to back this frequently refered to tidbit up. Rather, the proportion appears to be about 1.3-to-1, with the normal human playing host to around 100 trillion microorganisms, plus or minus. Rather, the proportion seems to be about 1.3-to-1, with the normal human playing host to around 100 trillion organisms, plus or minus.
Explanation:
You can mix this up and paraphrase this into ur own words.
The microorganisms that are present and live in the human body are 1 to 10 micrometers.
What are microorganisms?
Microorganisms are tiny living organisms that can be only seen by microscopes. These organisms are found everywhere on earth. They are free-living and parasitic. There are good and bad microorganisms.
Some are useful to the earth and the living creature, but some are harmful to the health of other living creatures. They are responsible for many diseases in plants, animals, and other organisms.
There are many bacteria present inside the body. They are present in the digestive system, and our mouth. They help in the digestion and breakdown of many food materials and macromolecules.
Thus, the size of microorganisms that are present and live in the human body is 1 to 10 micrometers.
To learn more about microorganisms, refer to the link:
https://brainly.com/question/4314835
#SPJ2
Give an example, other than making ice-cream or a slushy, where the effect of salt on the phase change of water is useful in everyday life.
ASAP PLS AND THANK YOU
Answer:
Putting salt on the ground to melt ice or snow I mean.
Explanation: