Answer:
Ocean waves are longitudinal waves, Sound waves are transverse waves. Ocean waves are electromagnetic waves, Sound waves are mechanical waves. A Sound wave of over 20,000 Cycles per Seconds is inaudible to Humans.
Explanation:
Answer:
Ocean waves are mechanical waves while Sound waves are electromagnetic waves
Explanation:
help please
According to the data what kind of substance is gastric juice?
A.
it is a weak acid since the blue litmus paper turns red and the pH is 1.7
B.
it is a strong base since the blue litmus paper turns red and the pH is 1.7
C.
it is a strong acid since the blue litmus paper turns red and the pH is 1.7
D.
it is a weak base since the blue litmus paper turns red and the pH is 1.7
Answer:
C. it is a strong acid since the blue litmus paper turns red and the pH is 1.7Explanation:
As per table gastric juice has pH of 1.7 which is the strong acid. If you remember, 0-7 range determines acids and litmus paper confirms that by turning red.
So correct choice is C.
What is the molecular geometry of a molecule with 4 outer atoms and 2 lone pairs on the central atom?
Answer:
See explanation
Explanation:
The valence shell electron pair repulsion theory holds that the number of electron pairs on the outermost shell of the central atom in a molecule determines the shape of the molecule.
In accordance with this theory, the electron domain geometry of a molecule having 4 outer atoms and 2 lone pairs on the central atom is based on an octahedron. The molecular geometry of this molecule is square planar with a bond angle of 90 degrees.
Science help due by 11:59 What is gravity like on other planets
compared to Earth?
Explanation:
Mercury 0.377 g
Venus 0.905 g
Earth 1 g (midlatitudes)
Moon 0 .165 7 g (average)
What type of plate boundary is
shown in the diagram below?
Mrs. Franklin decides to use her new aluminum pan to scramble eggs. She wants to determine how much heat energy will be needed to
heat her aluminum pan from 20 degrees celsius to 220 degrees celsius. She obtains the specific heat of aluminum from the reference
table. It lists the specific heat of aluminum as 0.90 N/kg*degrees celsius. The pan has a mass of 0.5 kg. She does the calculation
correctly. Which one of the following is her answer?
Your answer:
0.45 joules of heat energy
O 0.9 kilojoules of heat energy
O 90 kilojoules of heat energy
180 joules of heat energy
Answer:
90 kilojoules of heat energy
Explanation:
I don't really know why this is just the answer to it on my quiz so if someone else can explain.
if a solution has a pOH of 5.2 the pH of the solution is
Answer:
ph=5.2 solution is acidic
Which subatomic particle orbits the nucleus?
O the electron
o the neutron
O the proton
it’s electron btw
Answer: Subatomic particle which orbits the nucleus is electron.
Explanation:
Every atom contains three sub-atomic particles. These are protons, neutrons and electrons.
Protons contain a positive charge, neutrons have no charge and electrons have a negative charge.
Both protons and neutrons reside inside the nucleus of the atom whereas electrons reside outside the nucleus of atom and revolve around the nucleus.
Therefore, it is concluded that subatomic particle which orbits the nucleus is electron.
9) What is the density of the gold rock with a mass of 386 grams and has a volume of 20 cubic centimeters?
O 0.193 g/cc
O 193 g/cc
O 1.93 g/cc
19.3 g/cc
Answer:
density= mass/volume
hence density of gold rock
= 386/20
=19.3 g/cc
Lysol Power Toilet Bowl Cleaner contains 9.5% hydrochloric acid. Explain why this would be necessary to clean toilet bowls that have white or rust-coloured deposits
Answer:
The acid will absolutely remove the hard water deposits that are trapping the stains. The longer it soaks, the less you have to scrub. It works for hard water stains, limescale, and rust!
Explanation:
hope this helped you out.
Please help, I'm so confused!!!!
Answer:
[tex]\boxed {\boxed {\sf N_2}}[/tex]
Explanation:
Let's examine this reaction, especially the coefficients.
[tex]N_2+3H_2 \rightarrow 2NH_3[/tex]
First of all, remember that reactants are used to make the product. They are found on the left of the arrow usually. Therefore, N₂ and H₂ are the reactants, while NH₃ is the product. We can automatically eliminate NH₃ from our answer choices, because it is simply not a reactant.
Next, look at the coefficients.
N₂ has no coefficient, so a 1 is implied. H₂ has a coefficient of 3.Therefore, for the reaction to work, there must be 1 mole of N₂ and 3 moles of H₂.
We have 3.2 moles of N₂ and 5.4 moles of H₂.
Divide each amount given by the required amount for completion.
3.2 mol N₂/ 1 mol N₂= 3.2 times 5.4 mol H₂/ 3 mol H₂=1.8 timesTherefore, there is enough nitrogen to complete the reaction 3.2 times, but only enough hydrogen for 1.8 times. If everything is completely reacted, we will run out of hydrogen and have excess nitrogen.
HELP
In the following acid-base reaction,
NH4+ is the
H2PO4- (aq) + NH3(aq) → HPO42- (aq) + NH4+(aq)
Answer:
C
Explanation:
The NH4^+ is the conjugate acid because it is formed from the base by accepting a proton.
Browstead - Lowry definitionAn acid base reaction can be defined according to;
ArrheniusBrownstead - LowryLewisThe NH4^+ is the conjugate acid because it is formed from the base by accepting a proton as can eaily be observed in the reaction equation as shown.
Learn more about acid base reaction: https://brainly.com/question/11256472?r
. If 30.0 grams of copper (II) chloride reacts with 40.0 grams of sodium nitrate, what is the limiting reactant?
Answer:
The limiting reactant is copper (II) chloride
Explanation:
here you go
Convert 500.0 mL at 740.0 mm of Hg to its new volume at 780.0 mmHg. 474.4mL
The catalytic conversion of ammonia to nitric oxide is the first step in a three-step process, which ultimately results in nitric acid. Balance the equation for the reaction. NH3(g) + O2(g) → NO(g) + H2O(g)
a. 2, 1, 2, 1
b. 3, 2, 3, 3
c. 4, 3, 2, 6
d. 4, 5, 4, 6
The balance equation for the reaction is
4NH₃(g) + 5O₂(g) —> 4NO(g) + 6H₂O(g)The coefficients are 4, 5, 4, 6
Option D. 4, 5, 4, 6 gives the correct answer to the question.
From the question given above, we obtained:
NH₃ + O₂ —> NO + H₂O
The above equation can be balance as illustrated below:
NH₃ + O₂ —> NO + H₂O
There are 2 atoms of H on the right side and 3 atoms on the left side. It can be balance by writing 4 before NH₃ and 6 before H₂O as shown below:
4NH₃ + O₂ —> NO + 6H₂O
There are 4 atoms of N on the left side and 1 atom on the right side. It can be balance by writing 4 before NO as shown below:
4NH₃ + O₂ —> 4NO + 6H₂O
There are 2 atoms of O on the left side and a total of 10 atoms on the right side. It can be balance by writing 5 before O₂ as shown below:
4NH₃(g) + 5O₂(g) —> 4NO(g) + 6H₂O(g)
Now, the equation is balanced.
The coefficients are 4, 5, 4, 6
Thus, Option D. 4, 5, 4, 6 gives the correct answer to the question.
Learn more: https://brainly.com/question/24898561
What is PO3 compound name?
Answer:
PHOSPHITE ION is the correct answer.
Explanation:
Hope this helped Mark BRAINLIEST!!!
How many boron (B) and sulfur (S) atoms are in B253?
Answer:
2 boron and 3 sulfur
Explanation:
The subscript/ number behind and under is a subscript this tells you how many atoms there are
How do I balance
H2O ⇾ H2 + O2
What event occurs when the
tension built up along Earth's
plates is released causing one
plate to slip past another?
Answer:
An earthquake
Explanation:
In an exothermic the change in enthalpy is usually
Positive, because the potential energy of the reactants is higher than the potential energy of the products
Neutral, because the potential energy of the products and reactants cancel each other out.
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Positive, because the potential energy of the reactants is lower than the potential energy of the products
Answer:
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Explanation:
Exothermic reaction is a reaction in which heat is released to surrounding. This is due to the fact that the heat content of the reactant is higher than the heat content of product thus producing a negative enthalpy change (ΔH) i.e
Enthalpy change = Heat of product – Heat of reactant
ΔH = Hp – Hr = negative
Considering the options given in the question above, the correct answer is:
Negative, because the potential energy of the reactants is higher than the potential energy of the products
Commercially available concentrated hydrochloric acid is 37.0% w/w HCl. Its density is 1.18g/ml. Calculate the molarity of concentrated HCl?
Answer:
M = 12.0M
Explanation:
Hello there!
In this case, according to the given by-mass percent of HCl, which can be set up in terms of mass of HCl over mass of solution, we can calculate the molarity, by multiplying by the density to get the mL's of solution and further convert to liters. Moreover, the molar mass of HCl (36.46 g/mol) must be also used to calculate the moles, since molar units requires moles of solute and liters of solution as shown below:
[tex]M=\frac{37.0gHCl}{100g\ sln}*\frac{1.18g\ sln}{1mL\ sln}*\frac{1000mL\ sln}{1L \ sln}*\frac{1molHCl}{36.46gHCl}\\\\M= 12.0M[/tex]
Best regards!
Select some particular plant or animal and find out how it has been improved because of the study of genetics. The following examples are given, but you may select some other topic if you like. Be sure that you have the topic and the method (written or oral) of reporting approved before you do your research. If you choose an oral report, it should be at least 3 minutes in length. If you choose a written report it should be at least 500 words in length.
Do some research into thornless varieties of plants.
What plants are available which do not have thorns?
Is thornlessness a mutation?
When and where was the possibility of growing thornless varieties of plants discovered?
How do these varieties compare with the variety that has thorns?
Consult seed catalogs, gardening books, and magazines in the library.
Do some research into the new variety of pumpkins that do not have hulls on their seeds.
Is the flavor of the new variety as good as the flavor of the older varieties, or is the new variety raised only to have seeds without hulls?
How are the seeds prepared?
Is the pumpkin seed a good source of protein?
Consult seed catalogs, gardening books, and gardening magazines.
Study the potato famine in Ireland.
Study how the use of some modern types of potatoes can help to overcome such famines.
Give some examples of potatoes which are hardy against disease.
Study the careful breeding experiments that resulted in disease resistant potatoes.
What makes them hardier and more disease resistant?
What makes them hardier and more disease resistant?
Do some research to find out about the new breeds of cattle that provide much better beef than the older breeds.
Consult a genetics book from the library to determine the names of such cattle.
what makes these breeds better? Are they cared for the same way? Do they have any drawbacks in terms of cost of breeding and raising?
You may want to investigate some of the diseases which are inherited.
Consult a genetics textbook from the library.
You may also need to look up some of these in a medical textbook or the Journal of Heredity.
Who is more likely to inherit them? Why?
How many moles of H2 are in a flask with a volume of 2500 mL at a pressure of 30.0 kPa and a temperature of 27oC?
Answer:
0.0300 moles of H₂
Explanation:
The original equation is PV = nRT. We need to change this to show moles (n).
n = [tex]\frac{PV}{RT}[/tex]
It's important to convert your values to match the constant (r) in terms of units.
30.0 kPa = 0.296 atm
2500 mL = 2.50 L
27 °C = 300 K
Now, plug those values in to solve:
n = [tex]\frac{(0.296)(2.50)}{(0.0821)(300)}[/tex] - for the sake of keeping the problem clean, I didn't include the units but you should just to make sure everything cancels out :)
Finally, you are left with n = 0.0300 moles of H₂
PLEASE HELP ME OUT. I AM REALLY LOST AND I JUST NEED THIS LAST QUESTION I WILL BE GRATEFUL AND WILL GIVE BRANLIEST!
PLEASE HELP ME OUT. I AM REALLY LOST AND I JUST NEED THIS LAST QUESTION I WILL BE GRATEFUL AND WILL GIVE BRANLIEST!
Explanation:
—COOH and —NH₂
Carboxylic Acid and Amino group
-TheUnknownScientist
6. How are these two isotopes of carbon different from each other? 12C and 14C
Answer:
Carbon-12 and carbon-14 are two isotopes of the element carbon. The difference between carbon-12 and carbon-14 is the number of neutrons in each of their atoms. ... Atoms of both isotopes of carbon contain 6 protons. Atoms of carbon-12 have 6 neutrons, while atoms of carbon-14 contain 8 neutrons.
Explanation:
haha carbon atoms go brrrrr
How many grams of H2O is created from 60 grams of O2?
[2 H2 + O2 —> 2 H2O]
Answer:
67.5 gm H2O
Explanation:
2 H2 = 4 gm
O2 = 32 gm
2 H20 = 36 gm
so 32 gm O2 results in 36 gm H20
32/36 = 60/x x = 67.5 gm
Calculate magnetic moment of a divalent ion in aqueous solution, if the electronic configuration is [Ar] 3d5 .
Answer:
5.47 B.M
Explanation:
✓We were given electronic configuration of argon as [Ar] 3d5.
✓This is a divalent ion. It has atomic number of 25.
✓magnetic moment can be calculated using below expresion
√[n(n+2)] .....................eqn(1)
✓ It has 5 unpaired electrons. Then n= 5
✓ [n(n+2)]
✓ substitute the ( n= 5) into eqn(1)
Then magnetic moment= [n(n+2)]
= [ 5(5+2) ]
= 5.47BM
Calcium carbonate + hydrochloric acid forms copper ___ + water + carbon dioxide
What does it form copper what please help me
Answer:
The answer copper carbonate
what happen when a piece of silver metal is added to the copper sulphate solution
Answer:
Explanation:When silver Ag metal is added to copper sulphate CuSO4 solution, no reaction takes place as silver is less reactive than that of copper and cannot displace copper from its solution. Hence, when a piece of silver metal is added to copper sulphate solution there will be no reaction.
Answer:
There will be no reaction
Explanation:
Therefore, when silver Ag metal is added to copper sulphate CuSO4 solution, no reaction takes place as silver is less reactive than that of copper and cannot displace copper from its solution. Hence, when a piece of silver metal is added to copper sulphate solution there will be no reaction.
Is NaCl solute or water ?
On a hot day, a student places a glass of cold lemonade on a table outdoors. After a few minutes, water droplets have formed on the outside of the glass.
Is energy absorbed or released by the cold lemonade? Explain your answer.
Compare average kinetic energy for the air molecules and lemonade molecules when the student first places the lemonade outdoors. Explain your answer.
Explain how and why the water droplets form on the outside of the glass.
Answer:
ye but sdfajkd tryng to play me
Explanation:
Answer:
Vapor is released out of the lemonade because when you place it in a hot it will increase.
Explanation: