Answer:
gang gang
Explanation:
In all it means a biologist specializing in physiology.
Two pendulums colliding are example of?
Answer:
it should be an Elastic collision
water is formed when 48g of oxygen combine with 6g of hydrogen. what mass of oxygen combines with 2g of hydrogen
Answer:
16g of oxygen reacts with 2 g of hydrogen to form 18g of Water
write True If the statement Is Correct And False If Not
Answer:
11.false12.true13.true14.false15.true16.false17.false18.false19.true20.false21.PC22.CC23.PC24.CC25.CCExplanation:
I think it is helps youThis table displays which one is it A. Price values of the metals ,B. Physical properties of the metals ,C. Chemical properties of the metals ,D. Corrosive resistance of the metals
Answer:
b the physical components
Which of the following is similar in size to an atom?
O A ball used in sports, such as a basketball
O A large building, similar to a shopping mall
O A particle you cannot see with your eyes
O A seed of a fruit from an apple or orange
Rita measures the temperature of a pot of hot water and finds that it is 85.6
°C. What is this temperature in °F?
A. О 96.5 °F
B. O 212 °F
C. O 79.6 °F
D. O 186 °F
Carbon tetrachlordie (CCI4) is ___
A. iconic
B. Covalent
Answer:
b
Explanation:
why does magnesium in an aqueous solution of magnesium chloride conduct electricity but solid magnesium chloride does not?
Answer:
Delocalized electrons
Explanation:
Magnesium Chloride is an ionic compound, so its lattice structure prevents the flow of electrons. However, when you convert the ionic compound into an aqueous solution it allows movement of electrons/ions due to the breakdown of the molecular forces which make it conductible. In short, Ionic compounds as a solid are not conductible but they are in an aqueous form.
I need help with this
Answer:
87 (whatever unit its using)
Chemical & Earth Science Name:______________________________________
Date: ________________________________
Nonmetals & Metalloids Worksheet
Write the letter of the correct answer on the line at the left.
1. _____ Which of the following is NOT a
property of most nonmetals?
A found on the right side of the
periodic table
B solids tend to be dull and brittle
C excellent electric conductivity
D many are gases at room temperature
3. _____ Two of the same atoms bonded
together is called a(n)
A isotope
B diatomic molecule
C binary atom
D semiconductor
2. _____ The only nonmetal in Group 14 is
A carbon
B oxygen
C nitrogen
D fluorine
4. _____ The highly reactive nonmetals of
Group 17 are called the
A noble gases
B metalloids
C halogens
D actinides
If the statement is true, write true. If the statement is false, change the underlined word
or words to make the statement true.
5. ___________________ Atoms of nonmetals usually lose electrons when they combine
with other atoms.
6. __________________ When two or more atoms bond by sharing electrons, they form
a molecule.
7. __________________ The elements that have some properties of metals and some
properties of nonmetals are called halogens.
8. __________________ Helium has chemical properties so different from those of the
other elements that it cannot be placed in any group.
9. __________________ Substances that can carry electric current under some
conditions but not under others are called semiconductors.
10. __________________ The Group 15 element oxygen is used to make compounds
known as fertilizers.
Answer:
whoa this question is long
Explanation:
how did u write it gosh
Why Leaves Change Color in the Fall
Answer:
Chlorophyll Breaks Down
Explanation:
But in the fall, because of changes in the length of daylight and changes in temperature, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible and give the leaves part of their fall splendor.
Answer GREEN CHLOPHYL GOES AWAY
Explanation:
THE RDS, YELLOW, BROWNS, AND PURPLES OF FALL LEAVES ARE TIN THE LEAVES ALL SPRING AND SUMMER. IN THE FALL, THE GREEN CHLOROPHYL WHCIH HAS COVERED THE OTHER COLORS, GOES AWAY AND WE SEE THE OTHER COLORS THAT WERE ALWAYS PRESENT
What can you say about the reactants of photosynthesis and the products of cellular respiration?
Answer:
The reactants of cellular respiration are oxygen and sugar, which are the products of photosynthesis
Explanation:
PLS HELP
1. Describe the structure of atoms, including the electrical charges, the location (in or out of nucleus) and atomic mass (1 amu or
less than 1 amu) of the following particles:
Answer:
atomic
Explanation:
dropping bombs im atomic, 0 2 0 1 bit
One of the few resources on Mars is
Answer:
iron .. titanium.. nickel....aluminum... sulfur... and calcium
Suppose that you are dissolving a solute into 500 mL of water at 0°C. You find that no more than 495 g of solute will dissolve. Calculate the solubility of the solute in g/L.
Answer:
500 m 495 g its 900 mL
Explanation:
Element with the largest electron cloud
Out of the answer choices, rubidium has the highest energy valence shell. With a single electron in the fifth energy level, krypton will have the highest number of energy levels of the group I elements listed.
kasama na po jan ang explenation
An unknown element X forms a compound with chlorine: XCL2. Predict the chemical formula of the compound that element X makes with oxygen. Justify your answer.
balance CHCl3 + O2 = CO2 + H2O + Cl2
Answer:
2CHCl3 + 5/2 O2 => 2CO2 + H20 + 3Cl2
Explanation:
Left Hand Side(LHS)
We have CHCl3 and O2
Right Hand Side(RHS)
We have CO2, H2O and Cl2
Balancing
To make sure that they have same values, put 2 before CHCl3 giving 2CHCl3 and 3 on Cl2(RHS) for chlorine gas giving 3Cl2
H2O remains the same
Before CO2 put 2 giving 2CO2
To make sure that oxygen is balanced put 5/2 before it. This gives 5/2 O2 (2 cancels out don't worry)
Combining all;
2CHCl3 + 5/2 O2 => 2CO2 + H20 + 3Cl2
I hope this helps. Have a nice studies.
discrib acidic oxide that can be Thermal Decomposetio of carbonat
I need help with this question please
1-propanol is the correct answer.
The electron configuration for Helium (He) is shown below.
1s2
Which diagram shows the correct distribution of electrons in the electron shells of a helium atom?
Answer:
3rd image
Explanation:
Which of the ions below has the following of election configuration?
1s2 2s2 2p6 3s2 3p6 3d10
A.Co2+
B.Zn2+
C.Cu2+
D.Ni2+
Answer:
B
Explanation:
Its atomic number is 28 and that is zinc
Some copper is palced in a previouly weighted crucible and reweighed .
Mass of crucible + copper = 5.92g
Mass of crucible = 4.65g
Clculate the mass of copper used in the experiment
We can find the mass of copper by finding the difference between the mass of the crucible and the copper, and just the crucible. This is possible since the mass that is left would be attributed to just the copper.
Mass of copper = (Mass of crucible + copper) - Mass of crucible
= 5.92 g - 4.65 g
= 1.27 g
Question
How are chemical equations balanced?
Answer:
According to the law of conservation of mass, when a chemical reaction occurs, the mass of the products should be equal to the mass of the reactants. A balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side
Do all particles pass right through the atoms undeflected?
AnswereYs
Explanatioynt:Yes
24) When salt and water are mixed, they form a solution like in the ocean. When sand and
water are mixed, they form a mixture where the sand does not dissolve. Which statement
might summarize this observation?
A) Mixtures and solutions are the same.
B) All substances mixed with water are solutions.
In mixtures, you cannot see the separate substances.
D) In solutions, you cannot see the separate substances.
I think the answer is d if I'm wrong I'm So so so sorry
What gas in our atmosphere is thought to have come from plants and algae alone?
Answer:
Oxegen
Explanation:
All that oxygen has to come from somewhere. You might already know that it comes from photosynthetic organisms like plants.
1) What is the time a projectile object is in flight (in the air) if it is launched at a velocity of 15
m/s at an angle of 37 degrees?
2) What is the range (horizontal distance traveled) of this object?
3) What is the time a projectile object is in flight (in the air) if it is launched at a velocity of 47
m/s at an angle of 15 degrees?
4) What is the range (horizontal distance traveled) of this object?
5) What is the time a projectile object is in flight (in the air) if it is launched at a velocity of 60
m/s at an angle of 55 degrees?
6) What is the range (horizontal distance traveled) of this object?
Answer:
So the degree angle will be horizontally
Explanation:
An atom that gains one extra electron forms an ___________with a 1- charge.
Explanation: When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion.
When asked why a chlorine atom gains one electron to form an anion with a 1- charge, a classmate answered, "Because noble gas configurations are stable." Is this statement generally true?
Noble gases have the maximum number of electrons in their outer shell. The statement made by the student about the stability of noble gases is generally true.
It is true that noble gases are stable elements. This can be attributed to the fact that they have the complete number of elements in their outer shell. That is why they hardly participate in any reactions. The chlorine atom receives an electron from a donor element and attains a negative charge. When two chlorine atoms bond covalently, they share electrons and thus attain the noble state configuration.Learn more here:
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