Answer:
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. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.
Answer:
[tex]\boxed {\boxed {\sf Atoms \ in \ reactants \ = atoms \ in \ products}}[/tex]
Explanation:
The Law of Conservation of Mass states that mass cannot be created or destroyed.
In a chemical reaction, this means the mass of the reactants (substances going in and being changed) must equal the mass of the products (new substances from the reaction).
In addition, the amount of atoms must stay the same. The atoms can and will reconfigure to form different compounds, but the number of atoms stays the same.
a sample substance has the chemical formula: H2CO3 , one molecule of the sample contains __ ????
Answer:
1,6,8
Explanation:
Periodic Table- H=1.C=6,O=8
Hydrogen is H, Carbon is C, Oxygen is O
Answer:
H=hydrogen
C=carbon
O=oxygen
H- 1
C- 6
o- 8
Explanation:
Magnesium (Mg) has two electrons in its outermost energy level.
Oxygen (O) has six. How can a Mg atom bond with an O atom?
please help me!!
she makes model of a plant cell she viewed using a microscope. The scale is 1 um: 0.5 cm. The student
includes 6 mitochondria in the model.
How many mitochondria do the student see in the real cell?
a.9
b.3
c.6
d.12
Answer: c is 6 and that is the answer
Explanation: I took the test and got a 100
Human activities can have more affect on the environment than you may think. When a dam is built, what are some of the impacts it will have on the surrounding environment?
Practice
Answer in at least 2 complete sentences.
Answer:
When a dam is built, the rest of the lake will begin to drought and remove moisture for the wildlife. Making the wildlife adapt, and in severe cases, become endangered.
Look at the table that shows values for Coast Guard search and rescue operations. Write an evaluation of the success of the Coast Guard’s efforts. Be sure to support your answer with evidence from the data table.
Answer:stats are higher than before
Explanation: its their evaluation because the stats are higher than beofre
help me pls omg , im stuck
Answer:
b
Explanation:
How do substances move across the cell membrane?
Answer:
The plasma membrane by diffusion
Explanation:
Materials move within the cell's cytosol by diffusion, and certain materials move through the plasma membrane by diffusion
Which of the following elements does NOT need to be diatomic to exist in nature?
A. Hydrogen
B. Oxygen
C. Carbon
D. Nitrogen
Of the first 103 elements, how many have 2 letters in their symbols?
Which of the following is a combination of more than on simple machine?
A.Pulley
B.Wedge
C.Scissors
D.Incline
Answer:
D.
Explanation:
Answer:
It is D. Incline
im literally gonna cry . what is this
What is the function of a cell wall?
what is the level of organization in living things
Which one would charge faster?
I need to write an essay on the help benefits of plants! You do not need to write an entire essay, but I would like points and website links! Thanks.
Help me plzz can't fail this
due today
Answer:
I'm lazy so I won't explain
1. Groups are the vertical lines on the periodic table
2. Periods are the horizontal lines on the periodic table
3. *make sure to always capitalize the 1st letter, and lowercase the 2nd
*Always use print letters
a. Mg b. K c. Fe d. Cu e. Xe f. Pt
4. a. Carbon b. Lead c. Arsenic d. Osmium e. Krypton f. Strontium
5. a. 1 b. 4 c. 7 d. 14 e. 5 f. 5
6. a. 16 b. 2 c. 1 d. 12 e. 17 f. 8
Hope this helps u
SCIENCE! PLZ HELP FAST !! URGENT!!
What happens to potential energy when you move against the magnetic force?
Answer: The field produces a repulsive force pushing them apart. They repel each other. In this case, the closer they are, the higher their potential energy will be. If allowed to move, they may move as far apart as possible or one will swing around to change its orientation.
Explanation:
Which type of variable is kept the same throughout an experiment?
Constant variable
Measured variable
Outcome variable
Test variable
Answer:
Constant variable.
Anyone (cool, funny, middle school) wanna start a conversation?
Answer:
sure
Explanation:
what's up
Answer:
Im down, Im in 7th
Explanation:
sure hi lol
What is needed in order to create nuclear power? CHECK ALL THAT APPLY.
Uranium
Carbon
Atoms
Oxygen
Molecules
Answer:
uranium and atoms
Explanation:
How are the volvox, euglena, paramecium, and amoeba similar and different in how they move, and eat?
Answer:
Both can hunt for their food (heterotrophs), but euglena can also make their own food (autotroph) with its chloroplasts. Amoeba have pseudopods to move/eat, but euglena have flagella to move. How are euglena and paramecium similar and different? ... Both also use flagella to move, but volvox move together in colonies.
Explanation:
Answer: wattskennedy is right
Explanation:
I NEED HELP ASAP DON'T JUST ANSWER FOR POINTS OR YOU WILL GET REPORTED!
How many protons, neutrons, and electrons does potassium's neutral atom have?
Answer:
The number of neutrons is entirely dependent on the Mass number of the particular atom. The standard mass for potassium is 39.
Potassium is element number 19, so it has 19 protons and 19 electrons in the neutral atom. It has therefore 39-19 = 20 Neutrons.
Explanation:
Answer:
Number of Protons 19
Explanation:
Number of Neutrons 20
Number of Electrons 19
Melting Point 63.65° C
If density is calculated by mass divided by volume and the mass increases, what would happen to the density of an object?
Would it increase or decrease?
How do living and nonliving things differ?
Answer:
Hey mate.....
Explanation:
This is your answer,
Living things differ from non living things through motion, action, expression, way of living and etc......
Livings things:-
1. Livings things means something that keeps on moving or doing any particular work.
2. Livings things mostly consume, remove, and reproduce through different ways.
3. Examples of livings things are humans, animals, birds, reptiles, and even the germs like bacteria, fungi, ameoba and etc....
Non Livings things:-
1. Non Living things means something that just stays like a statue usually and never move or do a particular work.
2. Non living things do not consume, remove or reproduce anything.
3. Examples of non living things are table, chair, fan, house, book etc....
hope it helps you mate....
MARK ME AS THE BRAINLIEST.....
Follow me.....!!!!
Please help ASAP I will give 19 points please help
Don’t answer if you don’t know it, if you answer that is really rude because I need the answer and only 1 more person would be able to answer not 2 people to not answer if you have no answer. I am making it clear again DO NOT ANSWER IF YOU DONT KNOW THE ANSWER
Answer:
Can you pls clarify this
Explanation:
I dont
When the boat is placed on the scale, how does its weight compare to the weight of the water it displaced?
Answer: It'll be lighter than when it is put on the water.
Explanation: Cause when a boat needs to move, it usually takes water into the engine, and then propulses it bk out.
New Orleans has an altitude at and below sea level, a latitude near the Tropic of Cancer (the equator-zone), is surrounded by water, and has no mountains near by. What would you expect the climate to be?
Answer:
Rainy, sunny and humid.
Explanation:
Pollen is transferred from the stamen of one flower to the stigma of another. What has occurred?
Does anyone know the Lab Report of acids and bases???? HELP PLZ WILL GIVE BRAINLIEST WHOEVER HELPS PLZ
Answer:
Litmus is a natural acid-base indicator extracted from a type of lichen. If you have red and blue litmus paper, you can test different solutions for whether they are acids or bases. Blue litmus paper turns red when a solution is acidic; red litmus paper turns blue in basic solutions
Explanation: Hope this helped
Match the term with the definition.
Group of answer choices
Compressibility
Flammability
Heat of combustion
Toxicity
A) How easily can a substance be set on fire
B) Measure of how much heat is given off when a substance is burned
C) The ability of a substance to damage or harm an organism
D) Measure of how much the volume of matter can decrease under pressure
whats the order?
Answer:
here are your answers
Explanation:
compressibility ( D )
flammability( A )
heat of combustion ( B )
toxicity ( C )