A reptile egg is shown in the diagram.
Y
Which best describes the function of the structure
labeled Y?
O food source
O protection
waste collection
gas exchange
HELP
Answers
Answer:Its D
Explanation:
Trust
Answer:
food source
Explanation:
Got 100%
Related Questions
HELP PLS I WILL GIVE 40 POINTS!!!!
Which statement is true about all physical change?
The molecular composition of the substance remains unchanged.
The changed substance keeps all the same properties.
A permanent change in the substance has taken place.
Atoms rearrange to form a new substance.
Answers
An element with six electrons have the same number of?
Answers
Answer:
Protons
Explanation:
The number of electrons=the number of protons
Determine the mass of 21.05 moles of iron(III) sulfide.
Answers
Answer:
The mass of 21.05 moles of iron(III) sulfide is 4,372.085 grams.
Explanation:
Iron (III) sulfide is a chemical compound with the formula Fe₂S₃.
Being the molar mass of the elements:
Fe: 55.85 g/moleS: 32 g/molethen the molar mass of iron sulfide (III) is:
Fe₂S₃= 2* 55.85 g/mole + 3* 32 g/mole= 207.7 g/mole
Molar mass is the amount of mass that a substance contains in one mole. Then the rule of three can be applied: if in 1 mole of iron (III) sulfide there are 207.7 grams, in 21.05 moles how much mass is there?
[tex]mass=\frac{21.05 moles*207.7 grams}{1 mole}[/tex]
mass= 4,372.085 grams
The mass of 21.05 moles of iron(III) sulfide is 4,372.085 grams.
Which of these common substances is a homogeneous mixture?
O
A. table salt
B. pure water
C. whole milk
D. maple syrup
Answers
Answer:
whole milk ,table salt , maple syrup
Answer:
d
Explanation:
Pls help me if your good at science:)remember I need two answer choices
Answers
A has a force hitting the ball
D is changing the force when the ball hits the net
Answer:
A and D, my bad
Explanation:
True or False, In a neutral atom, the number of protons is equal to the number of neutrons
Answers
Answer:
False
Explanation:
In a neutral atom, the number of protons is not necessarily equal to the number of neutrons.
In such atom, the number of protons is equal to the number of electrons.
Protons are the positively charged particles in an atom. Electrons are the negatively charged particles in an atom. Neutrons do not carry any charges.When the number of protons and electrons are the same, a neutral atom is formed.
How many atoms are in 0.00100 mole of Na?
Answers
Answer:
6.02x10^23 atoms i think
Explanation:
PLEASE HELP HELP I NEED THIS ASAP
Answers
The net charge on a sulfide ion (S2-) is
-2. Explain how this ion obtains its
charge. Your answer
should include a discussion of
subatomic particles.
Answers
Explanation:
A sulfide ion S²⁻ is formed from sulfur atom.
An ion is an atom that has lost or gained electron.
Sulfur atom is made up of 16 electrons according to its position on the periodic table.
In essence, there are 16 negatively charged particles in an atom of sulfur.
Also, in the neutral or uncharged state, the number of electrons equals to the number of protons.
So, there are 16 electrons and protons in an atom of sulfur.
Every atom tends to be like the noble gases. Noble gases have complete octets. So, for sulfur to have a complete octet, it must gain two more electrons to be isoelectronic with Argon. Now, the number of electrons becomes 18;Charge = Number of protons - Number of electrons
Charge = 16 - 18 = -2
David heats a beaker of water for 5 min. Then he removes the beaker from the heat and allows it to cool. As the beaker cools, David measures the temperature of the water every minute for 15 min. Which equipment indicates the temperature?
Answers
Answer:
Thermometer
Explanation:
The equipment that indicates the temperature of the reaction is a thermometer.
A thermometer is a device used to measure the temperature of a body.
Most scientists use the thermometer to quantity the magnitude of the temperature of a body. There are different types of thermometer which depends on the type of temperature reading we want to collect.Temperature is the degree of hotness or coldness of a body.
Answer:
thermometer
Explanation:
how a cold front affects weather.
Answers
Answer:
A cold front forms when a cold air mass pushes into a warmer air mass. Cold fronts can produce dramatic changes in the weather. ... As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.
Answer:
Explanation:A cold front forms when a cold air mass pushes into a warmer air mass. Cold fronts can produce dramatic changes in the weather. As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.
In a molecule of fluorine, the two shared electrons give each fluorine atom how many electron(s) in the outer energy level
Answers
Answer:
8 electrons
Explanation:
As per the octet rule, the atoms possess a tendency to bond in a manner that every atom must have at least eight(8) electrons in its outermost/valence shell. It can be done either by sharing, gaining, or losing electrons from one atom to another. According to this rule, flourine would have 8 electrons in its outer shell after two shared electrons are given to it.
There should be 8 electrons in the outer energy level.
The following information should be considered:
According to the octet rule, the atoms possess a tendency to bond in a manner that each & every atom should have minimum eight(8) electrons in its outermost/valence shell. It could be done via by sharing, gaining, or losing electrons from one atom to another.Learn more: brainly.com/question/17429689
Summary If you were a conservation scientist, what would you like most about your job?
Answers
Explanation:
A conservationist is someone who advocates and champions the cause to protect the environment and use earth's resource in a sustainable way.
One of the interesting perks of being a conservationist is the ability to preserve pristine nature.
This aspect would most fascinate me. The joy of having to enact laws and policies that would preserve very vital aspect of the ecosystem would such a great delight. Also, having to champion the cause of indigenous people in whose voices are not often disseminated is a good catchWhich of the following is NOT an
example of a pure substance?
A. an element on the periodic table
B. a compound made up of chemically-bonded
elements
C. a glass of salt water
Answers
Answer:
C would be the answer this question
Are the pieces of paper natural or charged?
Answers
Answer:
natural
Explanation:
3 CACO3+2H3PO4>CA3(PO4)2+3 CO2+3 H2O
Answers
Answer:
its hto-567-st-3=56+78=103
Explanation:
so103 is yo answer
name the compound formed when pottasim reacts with bromine
Answers
Answer:
the answer is potassium bromide
Answer:
POTASSIUM BROMIDE
Explanation:
At room temperature, potassium reacts with bromine, and by synthesis, this compound is formed. The chemical equation of this reaction is 2 K + Br2 = 2KBr. Potassium bromide has an immense contribution to medical science.
what partie is found outside of the nucleus
Answers
Answer:
Electrons
Explanation:
Answer:
electrons
Explanation:
what is the mass of 2.50 mol of (C3H5)2S
Answers
Hey there!
We need to start this by finding the molar mass of (C₃H₅)₂S.
This molecule consists of 6 carbon atoms, 10 hydrogen atoms, and one sulfur atom. We need to add the molar masses of each atom up.
C: 6 x 12.01 = 72.06
H: 10 x 1.008 = 10.08
S: 1 x 32.07 = 32.07
-------------------------------
114.21 g/mol
Ok, now that we have established that the molar mass of (C₃H₅)₂S is 114.21 g/mol, we have 2.50 mol of (C₃H₅)₂S. If 1 mol has a mass of 114.21 g, then 2.50 mol will have a mass of 2.50 time 114.21.
2.50 x 114.21 = 285.525 grams
This should go to just three significant figures, so:
The mass of 2.50 mol of (C₃H₅)₂S is 286 grams.
Hope this helps!
1. Do you think that the lightbulb and the Moon spheres are "to scale" compared to the real
sizes of the sun and the Moon?
Answers
Answer:
Yes
Explanation: Had a question like this and I said yes and got it right
Can some answer this please?
Which of these describes a chemical property of a substance?
A. Sugar's tendency to dissolve in water
B. Paper's tendency to tear
C. Gold's tendency to stay shiny
D. Wax's tendency to melt at 37 Celsius
Answers
Answer:
i think its C
Explanation:
Wax's tendency to melt can describe a chemical property of a substance. Therefore, option (D) is correct.
What is a chemical property?A chemical property can be described as any of a material's properties that becomes evident during a chemical reaction. Any quality can be established only by changing the chemical identity of the substance. Chemical properties cannot be evaluated by viewing or touching the substance.
The internal structure of the substance must be affected greatly for its chemical properties to be investigated. When a substance undergoes a chemical reaction, its properties will change drastically, resulting in a chemical change.
Chemical properties are contrasted with physical properties and can be used for building chemical classifications. They are also useful to identify an unknown substance.
As the wax melt, it also burns and hives the carbon dioxide, water, heat, and light. Therefore, the wax's tendency to melt and burn is a chemical property.
Learn more about chemical property, here:
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Please need help with chemistry questions!!!
Answers
Answer:
will you like work ot just the answers
How many products are produced in the following equation.
C2H2N2O4 + O2 → 4 CO2 + 2 H2O + 2 N2
Answers
Answer:
There are three products;carbon(IV)oxide,water and dinitogen and the number of molecules are given
When a molecule loses or gains an electron it becomes
Answers
When a molecule loses or gains an electron it becomes an ion.
"If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion."
Answer:
the molecule become an iron
Explanation:
have a great day
12. What is the mass number of an atom that has 4 protons, 4 electrons, and 5 neutrons?
Answers
Answer:
9
Explanation:
mass number = protons + neutrons
= 4 + 5 = 9
3. Heating by direct contact between particles is called
Answers
PLEASE HELP!!! Which type of substance is gold an example of?
A. an alloy
B. a compound
C. a molecule
D. an element
Answers
Answer:
Hello!
Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element.
So in short, the Correct Answer will be (D) an Element.
Hope that Helps! Have A Wonderful Day! ☺
Explanation:
Gold is an example of chemical element with symbol Au aurum and atomic number 79, lightly reddish yellow, dense, soft, malleable, and ductile metal.
What is the difference between atomic number and atomic mass ?Atomic number of an element is defined as total number of protons present in the nucleus, neutrons carry no net electrical charge, so it is the charge number of the nucleus.
atomic mass of an element can be defined as the atomic weight is measured total mass of an element’s atom, the total number of neutrons and protons in the nucleus of an atom.
Both Atomic mass and an atomic number of elements are closely related if atomic number is high, then the atomic mass is also said to be high.
For more details regarding fire atomic number , visit
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Which is involved in the formation of sinkholes?
O acidic rainwater
O
mining
O rising sea level
winds
Answers
Answer:
Sinkholes this is the answer
Answer:
B. Mining
Explanation:
trust
I need help pls and thank you
Answers
Periodic Table Puzzle Test
Answers
Answer:
dfmpfndtngognjf
Explanation: