Answer:
0.4193924945 million
Explanation:
3.5(0.119826427)
2) Check all that apply.
What are the three major groups of elements?
Answer:
metals, nonmetals and metalloids
Explanation:
One day on her walk home from school, Leann noticed some rust on an old car.
She remembered that chemical equations can summarize what happens in a chemical reaction. What is the name of the two parts found on the left side of the equation below?
4 Fe + 3O2 → 2Fe2O3
Answer:
Iron and Oxygen
Explanation:
Fe is Iron and O2 is Oxygen
Please answer correctly nobody answers questions like this on brainly. BTW ITS STEM.
Which of the following choices describes an accurate relationship?
Descriptive research typically follows from explanatory research
Experimental research may lead to understanding descriptive research
Case study research typically follows from descriptive research
Observational research may lead to understanding explanatory research
Answer:
I believe your answer is B. Experimental research may lead to understanding descriptive research.
Generally, experimental research is a trial and error method that tests the hypothesis of descriptive research. Descriptive research being the theoretical or studied characters of a topic.
Please let me know if I had this wrong, and I'll do some extra research for you.
How is space like a vacuum?
which one is ittt? help please:)
Answer:
b
Explanation:
What is the mass of 1.9 x 10^22 molecules of CaCO3?
3.2 g CaCO₃
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.9 × 10²² molecules CaCO₃
Step 2: Identify Conversions
Avogadro's Number
[PT] Molar Mass of Ca - 40.08 g/mol
[PT] Molar Mass of C - 12.01 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide: [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
3.15794 g CaCO₃ ≈ 3.2 g CaCO₃
GUYS QUICK HELP!
is a soda pop bottle a invention or an innovation?
Answer:
Invention
Explanation:
!Hope This Helps!
A car accelerates from 20 m/s to 40 m/s in 4 seconds. What is the car’s acceleration?
Answer:
40 - 20 = 20
20/4 = 5m/s
The difference in velocity divided by the rate = acceleration.
If u have 10 moles of C2H2 how many mole of O2 would you need
Answer:
i dont know04487448700
A CANDLE WILL STAY LIT INSIDE THE SPACE SHUTTLE WHEN IT IS ON THE LAUNCH PAD, BUT NOT WHEN IT IS IN ORBIT. WHY?
Answer:
because there is no oxygen in space for it to burn
because all fire need oxygen to burn
Explanation:
What is the process where plants make seeds that grow into new plants
Answer:
Plant fertilization
Explanation:
Hope this helps:) Have a great day
Please give Brainliest if could
As one object gets closer to another object , the force of gravity will increase ......
True or false
Answer:
true
Explanation:
hope that helped!!
help please.
4. Two unknown elements react to a form a single compound. Element 1 is shiny, malleable, and conductive. Element 2 is a non-conductive gas. When they react, what would you expect to be true about the compound produced? (AKS 2a DOK 3)
a.The compound will probably have properties of both elements like a metalloid.
b.The compound will probably have high boiling points and melting points and will be conductive in solution.
c.The compound will probably have low boiling and melting points and will not be conductive in solution.
d.The compound will probably have high boiling and melting points and will not be
Answer:
this is my old account and these still dont have answers
Explanation:
llodine solution is added to a sample taken from the boiling tube after 10 minutes and
60 minutes.
Suggest what you would see in these samples.
03
Answer:
I have no idea sorry but if you payed attention to what they are telling you you won't half to cheat
Draw a physical model that shows the reaction of zinc metal and hydrochloric acid (hydrogen chloride).
Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2
“Be sure to label your model to clearly show how you are representing the atoms, how they are rearranged and
that mass is conserved in the reaction.”
If anyone could maybe send me a drawing it’ll be so appreciated! God bless you all :)
Answer:
Zinc + Hydrochloric Acid Zinc Chloride and Hydrogen Gas
Zn + 2HCI - ZnCl2 + H2
Explanation:
Be sure to label your model to clearly show how you are representing the atoms
I NEED HELP HERE PLEASE !!!
A gas has a volume of 4 liters at 3 atm. To expand the volume to 7000 ml, what the new pressure
(in atm) have to be?
Answer:
Gas it too expensive I need to get a job. I have no money to use at the atm
Explanation:
if your car is on 7000 ml it has issues and you need to take it to a mechanic.
During spontaneous fission, a nucleus of 25498Cf can produce 11846Pd, four neutrons, and what other nuclide?
Answer: 52Te - Tellurium
Explanation: Radioactivity occurs when an unstable nucleus of an element decompose into a stable element by emitting particles or forms of eletromagnetic energy. There are types of radioactivity and Spontaneous Fission is one of them.
In Spontaneous Fission, the unstable, also called parent, nucleus splits into two smaller nuclei and emitts one or more neutrons.
The reaction spontaneous fission of Cf is represented below.
25498Cf ⇒ 11846Pd + 4n + X
The characteristics of each element of the equation are:
1) The element Cf has atomic mass 254 and atomic number 98.
2) Element Pd has atomic mass 118 and atomic number 46.
3) Neutron is represented as n, has no atomic number and atomic mass 1.
Given these properties, to determine the other nuclide, we have to find out the nuclide's atomic number, as each element in the periodic table has its own atomic number.
At the left side of the equation, atomic number is 98. At the right side, element X's atomic number is
98 - 46 + 0 = 52
In the periodic table, the element with atomic number 52 is Tellurium, whose symbol is Te.
The other nuclide for the spontaneous fission is Tellurium (Te).
What is the name of Br6F10 ?
Answer:
Bromine fluoride
The answers are in the picture. this us the question, An increase in carbon dioxide production has led to an increase in global temperatures, which is causing glaciers to melt faster. If this trend continues, how will animals living in the polar regions be affected?
Answer:
D
Explanation:
because if there is no land for them they wont survive in only water
The increase in global temperature melts the ice in polar regions. This worsely affects the animals living there. Hence, they will migrate to other areas but this is in fact not possible for their adaptation in other areas and they may subject to extinction.
What is global warming ?Global warming is the rise of temperature of earth surface all over the world. The significant reason for global warming is green house effect. Gases like carbon dioxide, methane gas etc. are intensely absorbing temperature that is radiating back from earth.
Hence, these gases are increasing the atmospheric temperature in earth. Global warming have very serious impacts that going up to the major discussion to solve nowadays.
The melting of polar icebergs and rising of sea level definitely leads to the extinction of animals living in polar region. They cant be adopted to other regions and migrating to other areas does not save them. Hence, they will extinct from earth. Therefore, option d is correct.
Find more on global warming:
https://brainly.com/question/12908180
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Which of the following is an example of an adaptation that might be useful in the grassland? HELP ME PLS
A. an insect looking like a tree branch
B. an animal having a heavy coat of fur
C. an animal having large feet so it can walk on the snow
D. an animal being the color of brown grass and dust
Answer:
D
Explanation:
In the grassland pretty warm so the heavy fur coat wouldn't help, there is no snow in the grassland so the big feet for walking on snow also wouldn't help, its the grassland where trees are more scarce so not A, but there is a lot of grass and dust so being able to blend in would help.
Answer:
D
Explanation:
AN animal this color can camouflage and it can help them so they will not be eaten by there predators
Unbend a paper clip such that
you have
a long, straight piece of metal. Bend one of the initially straight sections
back and forth several times. Does it become easier or harder to bend
the paper clip in the same spot? What happens if you keep bending the
paper clip back and forth?
uz RS nyodag
Metals have a crystalline in nature, and a consistent shift in stress causes the structure to alter, causing the metal to stiffen and fracture. This is known as metal fatige. The bending causes that to occur.
What is metal ?A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Generally speaking, metals are malleable and ductile.
These characteristics are the outcome of the metallic link that exists between the metal's atoms or molecules.
The earth's crust is where most pure metals are found. They are discovered in ores, which are solid materials from which metals and minerals may be extracted. The majority of the planet's iron mass, which makes up over a third of its mass, is located in its core.
Thus, Metals have a crystalline in nature, and a consistent shift in stress causes the structure to alter.
To learn more about metal, follow the link;
https://brainly.com/question/18153051
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HELP !!!!!!!!!!!!! PLEEEAAAAASSSSSSEEEE
how does a drupe fruit differ from a hesperidum fruit.
Answer:
hi
Explanation:
Answer:
Fleshy Fruits: All of most of the ovary wall (pericarp) is soft or fleshy at maturity. ... partitions, juicy seed vesicles, and a leathery exocarp similar to a hesperidium. ... This is a very common dry fruit found in many different plant families.
Explanation:
The following diagram shows a view of earth . What do the arrows represent
Answer:
how the earth rotates
Explanation:
Answer:
The Diagram shows Earth's rotation! ^^
Explanation:
Orbit and revolution is when the Earth goes around the sun and I'm sure it's not seasons because seasons isn't a movement of Earth.
What causes warm air to rise?
a. The fact that it's less dense than cold air.
b. The fact that it weighs more than cold air.
c. The fact that it has higher pressure than cold air.
d. The fact that it's more dense than cold air.
2. The air pressure inside a submarine is 0.56 atm. What would be the pressure in
mmHg?
the substance that can not be further decomposed by ordinary chemical means is
A.water
B.gold
C.sugar
D.air
3
Question 6 (2 points)
An increase in the level of carbon dioxide in the atmosphere would result in:
Answer:
Air pollution
Explanation:
Carbon(IV)oxide is sometimes harmful to man but good for plant in other to manufacture their food
the structure and bonding of gold?
Answer:
metallic bonding
Explanation:
since it is a metal gold forms metalllic bonding.
Answer:
metalic bonding
Explanation:
What is the chemical formula for nickel (III) oxide, I know the answer but can someone explain how you would get it?
Answer:
the answer is d.
1. Write the symbols for each element.
2. Find the charge for each element using the Periodic Table. Write it above each element. (because there is a (III) after nickel, the charge of nickel is +3. oxygen is in group 16, which means it has a -2 charge.)
3. See if the charges are balanced (if they are you're done!)
- when you criss cross (getting Ni2O3, the charges are canceled out, so the equation is balanced.
if you still need help or if this is confusing, look up How to Write the Formula for Nickel (III) oxide by Wayne Breslyn on YT.
Answer:
D.) Ni2O3
Explanation:
edge 2021 (just needed the daily answer)
