Answer:
D. Sodium
Explanation:
We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).
Which of the materials in the chart originally came from fossil fuels?
Group of answer choices
Acrylic
Cotton
Nylon
Polyester
Viscose
Answer:
Polyester
Acrylic
Nylon
Are all made of fossil fuels.
Can you help answer BOTH questions pleaseee!!!
EASYYYYYYYYYYY A batter hits two balls during practice. Ball A travels 10 meters, while ball B travels 12 meters. The batter decides to hit ball A with less force. How will this change the motion of ball B?
The motion of ball B will increase.
The motion of ball B will decrease.
The motion of ball B will stay the same.
The motion of ball B will become the same as ball A.
Answer:
The motion of ball B will increase
Explanation:
Because if you hit ball A with less force than ball B then that means that ball B will go faster because you had hit ball A will less force witch will not be as faster as ball B.
Answer:
The first one
Explanation:
At room temperature, aluminum is a solid and water is a liquid. How do the particles of the solid aluminum compare to the particles of the liquid water?
A. The particles in the liquid water and the solid aluminum are the same. They both vibrate and move slowly.
B. The particles in the solid aluminum vibrate and are tightly packed, and the particles in liquid water slide past each other.
C. The particles in the liquid water vibrate and are tightly packed and particles in the solid aluminum slide past each other.
D.The particles in the solid aluminum are close together with no regular arrangement, and the particles in the liquid water are well separated with a regular arrangement.
Answer:
B
Explanation:
The particles in the solid aluminum vibrate and are tightly packed, and the particles in liquid water slide past each other. The particles in the liquid water vibrate and are tightly packed and particles in the solid aluminum slide past each other.
Hope this helps, have a good day : )
Help! Please :) Thank you
One atom of (blank) bonded to two atoms of (blank).
Answer:
One atom of Oxygen bonded to two atoms of Hydrogen. It's a water molecule. The element consists of two identical atoms which is a diatomic molecule.
Explanation:
Answer:
One atom of Oxygen bonded to two atoms of Hydrogen. It's a water molecule. The element consists of two identical atoms which is a diatomic molecule.
Explanation:
What substance do you get when you combine Bromine and Barium?
PLEASE HELP WILL GIVE BRAINLEST URGENT!!!!!!
When vinegar, an acid, is mixed with baking soda, a base, the reaction is similar to the reaction of Alka-Seltzer and water; a salt, water and carbon dioxide are produced. In two or more complete sentences, describe how your knowledge of balancing chemical equations can help you to determine the missing compound.
NaHCO3 + HC2H3O2 ⟶ ________ + H2O + CO2
Answer:
1) Carbon dioxide is the name of the gas.
2) The missing compound is
Step-by-step explanation:
1)When ever an acid reacts with baking soda brisk effervescence of carbon dioxide gas are released.
So, when citric acid reacts with baking soda it gives salt of sodium citrate , water and carbon dioxide gas.
2)
According to law of conservation of mass:
Number of atoms on reactant sides are equal to the number of atoms on product side.
Number of atoms of an element on left hand side is equal to the number of atoms of that same element on the right hand side.
Number of hydrogen atom on reactant side = 5
Number of hydrogen atom on product side = 2+ x
5 = 2+x
x = 3
Number of carbon atom on reactant side = 3
Number of carbon atom on product side = 1 + y
3 = 1 + y
y = 2
Number of oxygen atom on reactant side = 5
Number of oxygen atom on product side = z + 3
5 = z + 3
x = 2
Number of sodium atom on reactant side = 1
Number of oxygen atom on product side = a
1 = a
The missing compound is
Explanation:
Answer:
1) Carbon dioxide is the name of the gas.
2) The missing compound is H3C2O2Na
If you need an explanation, please ask. I hope this helps! :)
It is important that engineers build a structure that is safe. What do they look for when testing their designs?
Failure points
Fair tests
Prototypes
Variables
Answer:
Failure Points
Explanation:
Engineers want to test the areas that may possibly fail when they are building designs so when they go to actually build it they know it will not fail.
Which of the following is NOT a characteristic that all living things share? *
using energy
made of cells
able to talk
reproduce
Other:
Answer:
C- "able to talk"
Explanation:
Not all living things cant talk, but they all use energy, are made of cells and can reproduce.
WILL GIVE BRAINLY! Use the Venn diagram to compare natural and synthetic resources.
Answer: Natural
Bauxite.
Coal.
Copper.
Diamonds.
Gold Lead.
Iron ore.
Mineral sands.
Natural gas
Synthetic
They are all made from natural resources that were changed in chemical reactions. They are all made with specific properties to carry out a specific function. Examples of Synthetic Materials – Examples of synthetic materials include synthetic fibers, ceramics, polymers, artificial foods and medicines, and composites.
I need help now god dam
Answer: 1
Explanation: Step by Step
I WILL GIVE BRAINLIEST BUT THE QUESTIONS MUST ALL BE ANSWERED
Directions: Identify the manipulated variable and responding variable for each hypothesis.
HINT: If (fill in manipulated variable), then (fill in responding variable)
1. If plants are watered, then growth height will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
2. If chocolate is given to teachers, then amount of homework will decrease.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
3. If trees have leaves, then bird nests will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
4. If acid rain is in water, then fish population will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
5. If calcium is given, then bone strength will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: _______________________________________
Answer:
huh
Explanation:
Which statement best describes a difference between scientists and engineers?
Scientists build prototypes, while engineers test failure points.
Scientist design machines, while engineers conduct experiments.
Scientists and engineers are the same. They both study how things work.
Scientists study how things work, while engineers create new things.
Water is less dense as ice than liquid
Your answer:
true
false
Answer:
Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.
Explanation:
Answer:
false
Explanation:
Hope that helps!!
What element has the most Protons/ Neutrons/ and electrons.
Answer:
gold
Explanation:
Water’s chemical formula is . One atom of bonded to two atoms of . The hydrogen atoms are to one side of the oxygen atom, resulting in a water molecule having a positive charge on the side where the hydrogens reside and a negative charge on the other side, where the oxygen atom resides. This separation
of charge on of the molecule is called
word bank:H2O,oxygen,oppiste ends,hydrogen,attached,polarity
Which organism in the food chain has created food from the energy in sunlight?
A
krill
B
phytoplankton
C
leopard seal
D
Antarctic herring
Answer:
b hope I am right if not I am so sorry
Explanation:
strong acids and bases can be harmful to both plants and animals in our waterways. which of the following is not a consequence of acidity ?
Answer:
I think b is the correct answer
Explanation:
Answer:I think maybe C? I don’t know... I am in 6th grade and I don’t know what grade science this is...
Explanation:
please help me answser this, its a photo
o element
o subscribe
o coefficient
Answer:
I believe it is a element
.........
which of the following can cause an algal bloom ?
Answer:
I believe its either C or D
Answer:
The answer should be B.
4 QUESTIONS PLEASEEE HELP WILL GIVE BRAINLIEST!!!!
1. How are features like trenches, plains, ridges and valleys formed on the ocean floor?
2. Where does 90% of the marine life live in oceans?
3. a. Where are nutrients abundance? b. Where do these nutrients come from?
4. How do organisms deep I the ocean get their nutrients?
Answer:
1. Converging and Diverging plates
2. In the sunlit zone
3. a.Close to coastlines and upwelling zones b. Nutrients are brought to the surface ocean from depth by the upwelling process
4. Dead organic matter that come from phytoplankton and other plants
Answer:
1. Converging and Diverging plates
2. In the sunlit zone
3. a.Close to coastlines and upwelling zones b. Nutrients are brought to the surface ocean from depth by the upwelling process
4. Dead organic matter that come from phytoplankton and other plants
Explanation:
Connect as many terms that you can think of. Each term should be related to
the term at the center,
LIGHT
Can someone please help me with this it's for a grade.
Answer:
The Answer is 'D'
Explanation:
The diagram on the down side shows the behavior of the particles of a liquid so I suppose it is the ocean. While the top diagram shows the behavior of the particles of a gas so I am sure it's the air. Therefore I chose the last diagram because it describes exactly how you wanted in the question, which is the Ocean's water evaporating to become gas or the 'air' as we say
Thank you and I hope you like this answer!
AHAHA KENMA SUPREMACY
I need this-
kenma is just-
So im confused i don't know what im supposed to do here
So I believe you are supposed to take notes based on the guiding questions (the questions on the side).
Answer:
save your notes in a google drive folder then go back to canvas and click on the "google drive" tab then scroll down and once you see the name of the folder you saved your notes in, click on it then hit submit
Explanation:
help im being TIMED A batter hits two balls during practice. Ball A travels 10 meters, while ball B travels 12 meters. The batter decides to hit ball A with less force. How will this change the motion of ball B?
The motion of ball B will increase.
The motion of ball B will decrease.
The motion of ball B will stay the same.
The motion of ball B will become the same as ball A.
Answer:
c
Explanation:
The batter aint changing the force he is using while hitting Ball B. Therefore, Motion of ball b will stay the same :D
Answer:
The third one
The Motion of ball b will stay the same
hope this helps
Explanation:
Water has 2 oxygen molecules and 1 hydrogen molecule
Your answer:
True
False
Answer:
false
Explanation:
water has 2 hydrogen molecules and 1 oxygen molecule. hint:H20
Answer:
False. There is 2 hydrogen and 1 oxygen molecules.
Materials with small, connected pores are _____.
A. Impermeable
B. Permeable
C. Unsaturated
D. Saturated
GOD BLESS AMERICA!!!!!!!!!!!
And God bless you! :)
Merry Christmas and happy new year and stay safe and have an awesome day and God bless! :)
how are elements in the same group in the periodic table alike
Answer:
D. They have similar chemical properties
Explanation:
That's because they have the same number of electrons in the outer orbital