Answer:
Fe2O3
Explanation:
if we have to answer whether it is wrong or correct then it is wrong because the correct answer would be Fe (s) + O2 (g) = Fe2O3 (s) because the valences will be exchanged
i neeeed helllllpppppsss
Answer:
1.0 g/cm3
Explanation:
yeah that's the density of water
Answer:
a 1 g/cm3
Explanation:
per google- A common unit of measurement for water's density is agram per milliliter (1 g/ml) or 1 gram per cubic centimeter (1 g/cm3)
which one represents an element
Answer:
B
Explanation:
many reactive chemicals are stored in containers filled with Argon gas for safekeeping what about Argon's atomic structure makes it safe to store reactive chemicals in?
Answer:
Argon has 8 valence electrons making it non reactive.
Explanation:
Reactive chemicals are store in containers filled with Argon gas because the argon gas is non reactive. This is true because the argon gas has completely filled octet structure.
This can further be explained by writing the electronic configuration of argon.
The electronic configuration of argon is given below:
Ar (18) => 1s² 2s²2p⁶ 3s²3p⁶
Valence electron => 3s²3p⁶ = 2 + 6 = 8
From the above illustration, we can see that the outermost shell (i.e 3s²3p⁶) is having 8 electrons indicating that it is completely filled as the maximum number of electrons any shell can accommodate outside the first shell is 8 electrons. Thus, argon has 8 valence electrons ( i.e electrons in the outermost shell) and hence it is non reactive as the outermost shell is completely filled.
Convert the following number into scientific notation: 88,000,000.
A 8.8 x 10⁶
B. 88 x 10⁴
C 8.8 x10⁷
D. 8.8 x 10-⁷
Which is responsible for an atom’s identity?
A.Protons
b.Electrons
c.Neutrons
d.Valence electrons
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the
reaction?
O The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the
products.
O The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the
products,
The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the
products.
The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the
products.
Answer:
A
Explanation:
Question:
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the reaction?
Options:
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products. The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the products. The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the products. The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the products.Answer:
A.) The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products.
Explanation:
I just did the test on edge 2020 and got it right!
Which mineral is soft enough to be scratched by a fingernail?
a)
corundum
b)
calcite
c)
talc
d)
topaz
Answer:
Talc
Explanation:
Talc only has a hardness of one on the Moh's scale of hardness. This translates into a very soft material, which results from its layered nature. Naturally, this substance is hydrophobic (dislikes water), and tends not to absorb water, therefore giving some of its favourable water-resistant characteristics.
in the universe what can mass be defined as
Answer: Mass is both a property of a physical body and a measure of its resistance to ... Inertial mass is the mass of an object measured by its resistance to acceleration. ... back to the fact that we have not really defined what a force is. ... Then we can measure the mass of any other object in the universe ...
Pleaseee help meeeeeee
Answer:B
Explanation:
Heat boils it will get hot no heat/cold will freeze
What do you think is the difference between a scientific theory and law?
Answer:
A scientific theory predicts why something might happen and when more information goes into the theory it can better predict. But a law is something that no matter what will always be true.
Explanation:
What is an ORGANELLE And put a sentence that supports it
#STAY POSTED IM PUTTING SOME OTHER QUESTIONS UP SOON
~ Hello! Here's your answer! ~
[tex]\boxed{-See\;Below-}[/tex]
___________________________________________________________
An organelle is any of a number of organized or specialized structures within a living cell.
|
Sentence \/
"There must be at least 100 organelles in this living cell!"
____________________________________________________________
Hope i helped!
May I have brainliest?
[tex]\huge\boxed{Thanks,Plip.}[/tex]
The density of a pillow is greater than the density of a rock. Is this true of false
Answer:
I think it's false it helps you...... Thank you ☺️☺️Can someone please explain to me how I’m supposed to figure out the element with these configurations??
Which element has a greater atomic radius? Fluorine or Potassium
Answer:
An atom is a basic unit of a chemical element, such as hydrogen, helium ... a fluorine atom since the three additional protons the fluorine has will pull its ... As an example, potassium (K) has a larger average atomic radius (
6.(a) State any two ways by which water gets polluted.
(b) Name the components present in water gas.
A 300 kg computer cart accelerates at a rate of 5 m/s^2. What force is required to produce this acceleration?
Answer:
The answer is 1500 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × accelerationFrom the question we have
force = 300 × 5
We have the final answer as
1500 NHope this helps you
Which of the following forces weathers objects by expanding and changing shape?
Moving water
Wind
Plants
Ice
what element can scratch a diomand?
Answer:
another diamond ....theres nothing else that can that I know of.
which element is most likely to have an oxidation number of -2?
A. F
B. NE
C. CA
D. O
Answer:
D. O
_________________________________
F ----------¢ - 1
Ne --------¢ 0
Ca --------¢ + 2
Answer:
D. O
Explanation:
I need help with 2, 3, and 4 please help i will give the brainliest
Answer:
2=2.28*10^5
3=3.98*10^3
4=5.76*10^3
Match each term to its correct description
1) Limiting reactant
2) Theoretical yield
3) Excess reactant
a) Reactant that has some leftover at the end of the reaction
b) Reactant that is entirely used up in the reaction
c) Mass of product that can be made by the given masses of reactants
Answer:
C
A
B
Explanation:
Excess reactant: Reactant that has some left over at the end of the reaction
Limiting reactant: Reactant that is entirely used up in the reaction
Theoretical yield: Mass of product that can be made by the given masses of reactants
The terms have been correctly matched to their descriptions as follows:
Limiting reactant: b) Reactant that is entirely used up in the reaction.Theoretical yield: c) Mass of product that can be made by the given masses of reactants.Excess reactant: a) Reactant that has some leftover at the end of the reaction.What is a Reactant?A reactant is a chemical compound or element that participates in a chemical reaction.
The limiting reactant is completely used up after the reaction while the excess reactant is the compound or element that is much more than what is normally required to complete the reaction.
The theoretical yield is the maximum quantity of the product that can be formed by the reactants.
Learn more about reactants here:
https://brainly.com/question/6421464
where might u find examples of series & parallel circuits in everyday life
Answer: Here are some examples!
Explanation: An example of a series circuit is a string of Christmas lights. If any one of the bulbs is missing or burned out, no current will flow and none of the lights will go on. Parallel circuits are like the smaller blood vessels that branch off from an artery and then connect to a vein to return blood to the heart.
anywhere inside ur house lma.o.
I need help on this problem. I need it answered ASAP
Use this formula: Density = Mass/Volume
Given in the question:
Mass: 10g
Volume: 5cm3
The calculations:
Density = Mass/Volume
= 10/5
= 2g/[tex]cm^{3}[/tex]
Therefore, the density will be 2g/[tex]cm^{3}[/tex]
I think I'm allergic to garlic powder. Tonight I am making pasta and will not use garlic powder this time. If I get itchy or not is what kind of variable?
Answer:
Explanation:
A garlic allergy is rare. If you're allergic to garlic, you can be allergic to cooked or raw garlic, or to all forms. A garlic allergy is caused when your body's immune system mistakenly identifies garlic as being harmful and produces antibodies in an attempt to fight it off. Does this help?
Answer
Dependent
Explanation:
You will react depending on the presence of garlic powder
Which is one precaution to take when working with heat and fire?
Do not use during experiments.
Keep flammables away.
Avoid touching face and eyes.
Do not mix chemicals unless told to do so.
Placing a sample of iron (II) oxide into a graduated cylinder makes the water volume increase 12.0 ml. The weight of the sample is 76.6g. What is it’s density? (Round to the nearest hundredths)
Answer:
The answer is 6.83 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of iron (II) oxide = 76.6 g
volume = 12 mL
We have
[tex]density = \frac{76.6}{12} \\ = 6.3833333...[/tex]
We have the final answer as
6.83 g/mL to the nearest hundredthHope this helps you
Answer:
it 76.6
Explanation:
cause it is what it is
What is conserved in physical changes?
shape
energy
mass
density
Answer:
The answer is C.
Explanation:
By the Law of conservation of mass, when a element, or product undergoes a physical change, mass always stays the same.
Hope you have a good day.
During physical change the mass of the material remains conserved. The correct option is C.
What is physical change?Even before to and after a physical change, the material implicated is unique architectural the same.
Physical changes include texture, shape, heat, and the beginning of a change in the state of matter. The texture of a substance influences how it feels.
A physical change is simply a change in appearance. The situation has not changed since the change.
Physical change can be seen in the use of cutting paper, melting butter, dissolving salt in water, and breaking glass.
Mass is neither created nor destroyed in chemical or physical changes, according to the law of conservation of mass.
Physical changes occur when the phage of a substance changes without changing its chemical composition.
Thus, the correct option is C.
For more details regarding physical changes, visit:
https://brainly.com/question/17931044
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Which is not on a station model? *
precipitation
wind direction
fronts
cloud cover
Electrons have single negative charges. What does this mean?
Barium phosphide Ba3P2 BaP Ba3PO4
Answer:
It A(Ba3P2)
Explanation:
I took the test
Answer:
It A(Ba3P2)
Explanation:
