Answer:
the valance electrons
Explanation:
The following flow diagram shows the various steps of elimination of waste through urine. There is an error in one of the steps. (5 points)
What is the error in the diagram?
Step 2 should be the ureters carry urine to the urethra.
Step 2 should be the kidneys carry urine to the bladder.
Step 3 should be urine leaves the body through kidneys.
Step 1 should be urine flows from the kidneys to the ureters.
Answer:
The answer is A: step one should be urine flows from the kidneys to the ureters.
Explanation:
I did the test and got it right :)
Answer:
A is your answer
Explanation:
I NEED THE WORD EQUATION AND THE CHEMICAL EQUATION!!!!
Which detail supports the main idea Bats are useful to humans?
Bats often live in large colonies in caves and under bridges.
Bats are the only mammal that truly flies.
Bats eat hundreds of mosquitoes and other annoying insects at night.
Some bats carry rabies, a deadly virus.
Answer:
Bats eat hundreds of mosquitoes and other annoying insects at night.
What volume (in L) of carbon dioxide will be produced from the reaction of 37.4 L of oxygen?
Answer:
Maybe somewhere close to 12 L?
12. When can a theory be revised?
if the general public does not understand the theory
when a new scientist begins working on it
after 10 years
if new knowledge expands and corrects our understanding
Answer:
if new knowledge expands and corrects our understanding
Explanation:
However, science is always changing. As new evidence is uncovered, a theory may be revised or replaced by a more useful explanation.
Kaitlyn said that the metal sodium Na and the non metal neon Ne form the ionic compound NaNe. Using what you know about groups and valence electrons, explain why you support or do not support kaitlyns statement
There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. Therefore, Kaitlyn statement is incorrect.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
Ionic bond is formed by cation and anion. Na is a metals and act as cation as Na⁺. Neon is a non metal but it can not gain or loose electrons as its outermost shell is fully filled. Neon is a noble gas which is unreactive. So, Kaitlyn statement is not correct. . Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.
Therefore, Kaitlyn statement is incorrect.
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Analysis determined a compound contained 92.25% carbon and 7.75% Hydrogen. Determine the
empirical formula for this compound
Answer:
Styrene has the empirical formula CH, and there is 92.25% carbon and 7.75% hydrogen. The percentage of these parts can be used to determine the molar mass and use the molecular formula.
Explanation:
What is the ultimate goal of reproductive strategies?
Answer:
to accelerate progress towards meeting internationally agreed reproductive health targets and, ultimately, to attain the highest achievable standard of reproductive and sexual health for all.
When are atoms considered to be stable?
Answer:
Atoms are at their most stable when their outermost energy level is either empty of electrons or filled with electrons.
What is the percent composition by mass of suifur in Na2SO?
(Molar mass of Na2SO.= 142 g/mol)
Answer:
22.5%
Explanation
% composition = Molar mass of S
------------------------ x 100
Molar mass of Na2SO4
= 32.065
------------ x 100
142
=0.225 x 100
= 22.5%
In the cycle, after a new moon, _______________ means light appears on the _____________ side of the moon and continues to ________________.
Answer:
Explanation:
In the cycle, after a new moon, waxing means light appears on the right side of the moon and continues to increase.
The transfer of pollen grains from another of a male to the stigma of female flower
Answer:
pollination is the proces called
Determine the products of the following reaction:
Ca(OH)2 (aq) + 2 CuCl(aq) →
(aq) +
H(s)
:: Caci
:: CaCl2
+ CuOH
:: Cu(OH)2
*: CIOH
:: Cacu
How many atoms of tin are found in 3.50 moles of tin?
Answer:
2.11x10²⁴ atoms
What do atoms consist of?
Answer:
protons, neutrons, electrons
Answer:
Atoms consist of 3 particals:Protons,Neutrons,and Electrons
What is the symbol of element Californium?
Answer:
Californium is a chemical element which is radioactive, its symbol is 'Cf' and atomic number is 98
Answer: the elementale symble is Cf
Explanation: the symble of element is Cf
Select the correct answer.
This chemical equation is not balanced:
AgBr(s) → Ag(s) + Br2(g).
Why isn’t it possible for the reaction to occur as indicated by the unbalanced equation?
A.
There are more substances on the right side of the equation than on the left side.
B.
There is a gas on the right side of the equation but not on the left side.
C.
The bromine atoms must go through a liquid state before becoming a gas.
D.
There is more mass represented on the right side of the equation than on the left side.
E.
The bromine atoms on the right side of the equation are not bonded to another element.
PLS HELPPPPP ASAP
How many grams of Oxygen are in 7.2 grams of C12H22011? Round your answer to the hundredth place (0.01)
In 2011, fires in Bastrop County, Texas were the most damaging wildfires in Texas history. The fire spread through the pine trees and scorched nearly 5,700 acres of Bastrop State Park. The majority of the Houston toad’s habitat was lost, and the Lost Pines Forest was greatly affected. As ecological succession began, which of these most likely appeared in the Bastrop forest area first?
A.Shrubs and trees
B. Newly developed topsoil
C.Weeds and grasses
D.Lichens on fallen trees
The most likely appeared in the Bastrop forest area first is to be considered as the C.Weeds and grasses.
What is ecology?It is the study that represents the relationships between a living organism that involved the human, and the physical environment.
It is at the individual, population, community, ecosystem, etc.
Hence, the option c is correct.
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A cell wall is the ________.
A
thin, soft membrane that surrounds the nucleus of each cell
B
collection of cytoplasm in each cell
C
rigid structure that surrounds the cell membrane of plant cells and most bacteria
D
sheets of cells that cover the lining of the stomach
HELPP ME ASAP
What is the percent composition of Nitrogen in dinitrogen trioxide?
$4000 principal earning 6% compounded annually. what will the balance be after 6 years
Answer:
Compound Interest is calculated on the initial Principal for a given unit of time(yearly, half-yearly, quarterly), it also includes all of the accumulated interests of the previous period of a loan or deposit.
In this type of interest, the amount after the first unit time becomes the principal for the second unit and the amount after second unit time becomes the principal for the third unit and so on.
So the difference between the final amount and the principal is called Compound interest.
If the interest is compounded yearly:-
A=P(1+R100)n
Here A = final Amount
P = Principal
R = interest rate
n = time period
Compound interest = Final amount - principal
Given:-
Principal (P) = $4000
Interest Rate (R) = 6%
Time period (n) = 5 years
Which of the following organisms is the most complex?
A. Paramecium
B. Amoeba
C. Volvox
D. Euglena
Answer: C. Volvox sorry if i got it wrong
Explanation:
help me with this asap rocky pleasee
Answer:
b
Explanation:
What is the Molar Mass of Iron(Fe)? and also state how many particles there are in one mole of iron. will give brainliest to first answer
IF RIGHT I WILL GIVE BRAINLIEST
Which of the following types of soil would have the highest porosity?
A. 50% sand, 50 % clay
B. 80% sand, 20% silt
C. 40% clay, 60% silt
D. 80% clay, 20% sand
Answer:
80% clay 20% sand
Hope this helped <3
Answer:
B
Explanation:
Sand is much more bigger than clay meaning there are gaps between each grain of sand making it easier for water to flow into it.
What are you doing when you are making sound
A. You are causing photons to vibrate
B. You are causing a medium to vibrate
C. You are causing the air pressure to drop
D. You are causing electromagnetic waves to radiate
The genotype RR would be considered a purebred and the genotype Rr would be considered a hybrid. *
True or False
Answer:
true
Explanation:
Lightning storms trigger wildfires that burn up a lot of the plants and grasses in the ecosystem. Trees are mostly spared. what is the cause of this
Answer:
B
Explanation:
:)
What are the elements in group 1 of the
periodic table called?
Answer:
there called alkali metals
Answer:
alkali metals.
Explanation:
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).