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
If two brown rabbits with the same alleles (BB and BB) are bred, then all of their offspring will have the same alleles (BB)
would it be trust or false ?
Answer:
true
Explanation:
there is no other combination of alleles that would change the offsprings
1. The average person inhales an exhales about 2,200 L of O2 a day. How many
moles of oxygen gas is this?
Answer:4.5 moles
Explanation:
Which path shows how gravity causes water to move?
Answer:
run off
Explanation:
Answer: The answer is stream --> Tributary --> River --> Lake
For each problem listed in Column A, select from Column B the letter of the conversion factor that is needed to solve the problem. You may need to use more than one conversion factor to solve the problem.
kdjwsnakjNAdskjndkjnknjfdskjnfjkngdjknfjkgskjdgjkndfsjknd
_C3H602 + _ 02 → _ CO2 +_ H20
balance the equation
Answer:
balanced plz give correct question
need points & are good at science?
Answer:
A region 2
Explanation:
In the ATP cycle, a phosphate group is cut off of
A. ATP to form ADP, absorbing energy.
B. ATP to form ADP, releasing energy.
C. ADP to form ATP, absorbing energy.
D. ADP to form ATP, releasing energy.
Answer:
B) ATP to form ADP, releasing energy.
during a heating or cooling process, how are changes in enthalpy and temperature related?
Answer:
answer this and ill answer that
Explanation:
during a heating or cooling process, how are changes in enthalpy and temperature related?
4) Complete the following statement: Different elements...
A) Must have a mass number of at least 18.
B) Have more electrons than protons.
C) Have the same number of protons.
D) Have different numbers or protons.
Calculate the number of moles in 19.3g of NaCl
Answer: 0.33 mole
Explanation:
Let the number of moles be represented by x.
We should note that 1 mole of NaCl = 58.44g
Therefore, the number of moles in 19.3g of NaCl will be :
= 19.3/58.44
= 0.33 mole
Therefore, the number of moles in 19.3g of NaCl is 0.33 mole
Why is it necessary to heat the hydrate gently at first and then more strongly only after most of the water has been driven off
Answer:
To avoid spattering
Explanation:
If we are heating a hydrate to drive off the water of crystallization, we must initially heat the hydrate gently, at a lower temperature and then more strongly only after most of the water has been driven off in order to to prevent spattering.
Since we obtain the amount of water by the mass difference, Spattering decreases the mass of water obtained and ultimately results in a lower percent of water being calculated for the hydrate.
Pls help me with this question:As a result of this process offspring 1 and offspring 2 will have?
A.the same number of genes but different traits
B.a different number of genes but the same traits
C.the same number of genes and the same traits
D.a different number of genes and different traits
Answer:
I believe it’s C
Explanation:
I used Socratic and found a quizlet lol
The organism is reproducing asexually. Hence both offspring has the same number of genes and same traits.
What is asexual reproduction?Asexual reproduction allows for the rapid production of vast numbers of children by a single person. Asexual reproduction is a successful method of reproduction in a stable or predictable environment since all the children will be suited to that environment.
Asexually reproducing organisms may be at a disadvantage in an unstable or unpredictable environment since all of the progeny are genetically similar and might not have the genetic diversity to survive in new or changing settings.
Therefore, the given diagram describes the reproduction of an organism by asexual method and giving offsprings of same number of genes and same traits. Hence, option C is correct.
Find more on asexual reproduction:
http://brainly.com/question/7639952
#SPJ2
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).
Describe the difference between cations represented on group 1/2(red and orange)and those found on the transition metal group(peach)
1. Name the elements with the following symbols
a. Na
b. H
c. C
d. O
2. What is the symbol for the following elements?
a. Helium
b. Sulfur
c. Copper
d. Lead
Answer:
1.
a. Sodium
b.Hydrogen
c Carbon
d Oxygen
2.
a He
b S
c Cu
d Pb
Answer:
1.
a. Sodium
b.Hydrogen
c Carbon
d Oxygen
2.
a He
b S
c Cu
d Pb
Explanation:
Hope this will help
Who arranged the elements according to atomic mass, and used the arrangement to predict the properties of missing elements.
a john dalton
b henry mosely
c dmitri mendeleev
d antoine lavoisier
Answer:
i think it's C
Explanation:
But if it's wrong,im so sorry
Answer:
C.
Explanation:
the answer is C dmitri mendeleev
What are the 2 basic parts of an atom?
Answer:
nucleus and electrons
Explanation:
nucleus contains protons and neutrons
How would the reactivity of an element with one valence electron vary from an element with 8 valence electrons
Answer:
An element with 1only one valence electron is extremely reactive while an element with 8 valence electrons is very stable and does not react most of the times
Explanation:
Valency is the number of electrons in the outermost shell of the atom. It shows the ease with which elements react and combine with each other.
An element can take a maximum of 8 electrons in most of its outermost shells. As a matter of fact, the goal for its stability is to attain a structure with all 8 slots for electrons in its outer shell filled up. The element can either do this by adding or removing electrons.
The ease with which it adds or removes the electrons shows its reactivity. If it has only one electron to lose, (the valence electron) the element will be very reactive because this is relatively easier to do when compared with 2 electrons, three electrons, and so on. An element with 8 electrons in its outer shell is very stable and does not need to react anymore. an example of this is Neon and Argon.
Rain that containing excess of acid is called
Answer:
The rain containing excess of acid I called acid rain
Answer:
acid rain
Explanation:
Thats literally what its called
In the above figure, what type of bond is formed?
metallic
ionic
covalent
nonpolar
Answer:
It is an covalent bond.
Explanation: The bond is covalent because all the dots are equaled to each other therefore creating a stable bond. When the bonded atoms have a lower total energy than that of widely separated atoms, a covalent bond forms. The electrons are not moved from one atom to the other in polar covalent bonds, such as that between hydrogen and oxygen atoms, as they are in an ionic bond.
How well do you think scientists can predict where a volcano will erupt? How well do you think scientists can predict when a volcano will erupt? Explain.
Answer:
Volcanologists can predict eruptions if they have a thorough understanding of a volcano's eruptive history, if they can install the proper instrumentation on a volcano well in advance of an eruption, and if they can continuously monitor and adequately interpret data coming from that equipment.
Explanation:
002 (part 1 of 2) 10.0 points For :393 g of butadiene (C,11,) calculate the number of moles. Answer in units of mol.
Answer:
7.27 mol C4H6
Explanation:
To calculate moles, divide the molar mass by the grams given
To find molar mass, add the atomic mass of the elements
12.011*4 + 1.008*6 = 54.092 g/mol
393 g * 1 mol/54.092 g = 7.265 mol
Abel was running a fever of 107 degrees Fahrenheit, what was her temperature in degrees
Celsius?
Explanation:
we know the formula to convert farenheit to Celsius
=(F-32)(5/9)
=(107-32)(5/9)
(5/9)=375/9= 41.6 degrees Celsius
Cells are the basic units of
A. science
B. atoms
C. life
Answer:
C
Explanation:
Read it from my 8th grade text book a few years back.
Answer:
C l i f e
Explanation:
What do molecules put together form?
In other terms what do you call a molecule that is put together with another molecule to form a what?
How is the Periodic Table helpful to scientists?
Answer:
Because it helps predict the types of chemical reactions that a particular element is likely to participate in by telling each element's atomic number and usually its atomic weight
Explanation:
if you need some points and are good at science help!
Answer:
region 2 and region 3
Explanation:
you can tell by the color of the land my friends^^
Answer:
2, 3 They are closest to the equator, and the equator marks to hottest places on earth.
Explanation:
I hope this helps you.
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
Which has the most effect on tides? *
2 points
Moon
Sun
Earthquakes
Wind
Submit