Answer:
Explanation:correct because the chlorine can make it change so the soulation is dissloving
What do plants need in order to make food?
A. water, energy, oxygen
B.carbon dioxide, energy, oxygen
C.water, energy, carbon dioxide
D.water, oxygen, carbon dioxide
Answer:
Water, solar energy, carbon dioxide
Explanation:
Which of the following would SLOW DOWN the rate of chemical
weathering?*
Decreasing surface area
Increasing the temperature
Increasing rainfall
O Increasing surface area
Answer:
increasing rainfall. hope it help
What is the SI unit of time?
A.
second
B.
minute
C.
hour
D. day
Answer:
option a. second
.............
Which characteristic is true of sexual reproduction but not of asexual reproduction?
Answer:
j one or more parents. that's the answer
if there is 4 protons, 2 electrons, 5 neutrons what is the iconic charge and what element is this ?
Answer:
Be^2+
Explanation:
The atomic number indicates the number of protons so the element is Be (beryllium)
So now we know that a neutral atom contains four electrons but there are 2 so that means two electrons were taken away, making it positive. It would be a 2+ charge.
how are inclined planes used in the real world
Answer:
hi
Explanation:
Inclined planes are widely used to move heavy loads over vertical obstacles; examples vary from a ramp used to load goods into a truck, to a person walking up a pedestrian ramp, to an automobile or railroad train climbing a grade. ... The screw consists of a narrow inclined plane wrapped around a cylinder.
Have a nice day
Explain why hydrocarbons are present in so many different compounds.
Answer:
Many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. We use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil.
Some seawater is evaporated. The sea salt obtained is found
to be 86% sodium chloride. How much sodium chloride
could be obtained from 200 g of this salt?
Answer:
the answer is 172g
Explanation:
200 × 0.86 = 172g
Minerals are part of the Geosphere, which is composed of several layers.
O True
O False
Explain why is ortho nitrophenol more acidic than ortho methoxyphenol
Answer:
Ortho nitrophenol is more acidic than ortho-methoxyphenol.
Reason:
This is because the nitro-group is an electron-withdrawing group. In the case of ortho methoxyphenol; methoxy group is an electron-releasing group. Thus, it increases the electron density in the O−H bond and hence, the proton cannot be given out easily.
Hope this helps you. Do mark me as brainliest.
What two physical properties depend on the sample size of a substance? Give examples for
each.
Answer:
Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present.
Can someone help me ?
Explanation:
11. The correct option is B. The range for polar covalent bond is; 0.3 - 1.4
12. C. This is because there is uneven distribution of the charge. Unlike in the other options which are molecules of the same atoms with equal electronegativity.
13. A. Resonance structures is the correct option. It describes electrons in certain molecules or polyatomic ions where the bonding cannot be expressed by a single Lewis formula.
14. A. Lower electronegativity values means the electrons are more likely to be shared than transferred (gain/lost).
15. D. H2O is more polar than H2S because of the electronegativity of oxygen. H2O also has hydrogen bonds.
16. C. Due to the geometry of the other molecules, the polarity are cancelled.So they have a net polarity of zero.
how many molecules are in SO4
Answer:
there are 5 molecules in SO⁴
What is the relationship between extinction and biodiversity ?? PLEASE ANSWER!!!!!!!
Answer:
The biodiversity of an area is literally the number of species, both plant and animal, inhabiting the environment being examined. When a species is no longer found in a region, it is locally extinct.
Explanation:
Na2S + HCl NaCl + H2S NaCl Na + Cl2 Na2S + HCl NaCl + H2S balancing chemical equation
Answer:
Na2S + 2HCl -------------------> 2NaCl + H2S.
2NaCl --------------------------> 2Na + Cl2
Na2S + 2HCl ---------------> 2NaCl + H2S
Explanation:
Stoichiometry Is one of important aspect of Chemistry that will be taught to student learning chemistry. It shows the relationship between the reactants and the product. For instance, the amount a reactant reacts to form the products and the amount of products formed.
The balanced chemical reaction for the equation of reaction given in the question is given below;
Na2S + 2HCl -------------------> 2NaCl + H2S.
One mole of Na2S reacts with 2 Moles of HCl to produce 2 moles of NaCl and one mole of H2S.
2NaCl --------------------------> 2Na + Cl2
Two moles of NaCl breaks down into 2 moles of Sodium(solid) and one mole of Chlorine.
Na2S + 2HCl ---------------> 2NaCl + H2S
One mole of N2S reacts with 2 moles of HCl to produce 2 moles of NaCl and one mole of H2S.
What is the molecular formula for C5H7 if its molar mass is 536 g/mol?
Answer:
(C5H7)8
Explanation:
It's empirical formula is given as; C5H7
Molar mass of carbon(C) = 12 g/mol
Molar mass of hydrogen(H) = 1 g/mol
We are told that it's molar mass is 536 g/mol.
To find the molecular formula;
Molecular formula = n × empirical formula
Thus;
n = 536/((12 × 5) + (1 × 7))
n = 8
Thus;
Molecular formula = (C5H7)8
Please help me!!!!! I REALLY NEED HELP!!! What is my carbon footprint and how can I reduce it?
Answer:
your carbon footprint is how often you use a car of vehical you can decreese it by riding a bike or walking.
Explanation:
Carbon footprint is like when you ride a car and it produces lots of carbon monoxide in the air. Ways to reduce it is by walking, riding a bicycle or using the bus for transportation. Hope this helps.
What is the correct empirical formula for C18H306?
What happens to the hydrogen-hydrogen and nitrogen-nitrogen bonds?
Answer:
hydrogen nitride
Explanation:
since they are bounding they would become a compound, and so it would need to expand
Another student suggests putting some cotton wool in the top of the flask.
Suggest why this improves the investigation. *
(1 Point)
Answer:
B proofread the message.
Explanation: Hope this helped
can someone help me with all of those pls!!!!
What is the purpose of a spectroscope? *
A. to spread light into different wavelengths
B. to study a star's composition
C. to study a star's temperature
D. all of the above
PLEASE HELP!!
How many grams are in 0.75 moles of SO2
48 g SO₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
0.75 mol SO₂
Step 2: Identify Conversions
[PT] Molar Mass of S - 32.07 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of SO₂ - 32.07 + 2(16.00) = 64.07 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 0.75 \ mol \ SO_2(\frac{64.07 \ g \ SO_2}{1 \ mol \ SO_2})[/tex]Multiply/Divide: [tex]\displaystyle 48.0525 \ g \ SO_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
48.0525 g SO₂ ≈ 48 g SO₂
what is an acid containg oxygen?
Explanation:
An oxyacid, oxoacid, or ternary acid is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one other element, with at least one hydrogen atom bonded to oxygen that can dissociate to produce the H+ cation and the anion of the acid.
Answer:
oxyacid, oxoacid
Explanation:
An oxyacid, oxoacid, or ternary acid is an acid that contains oxygen. Specifically, it is a compound that contains hydrogen, oxygen, and at least one other element, with at least one hydrogen atom bonded to oxygen that can dissociate to produce the H+ cation and the anion of the acid.
Which organism obtains energy without depending on another organism
Answer:
Plants
Explanation:
A typical tincture of iodine contains about 2.0% iodine by mass. Calculate
the mass of iodine in a 500. g tincture.
Sophia was fascinated while studying the role of oceans in the hydrosphere. She decided to illustrate the features of the ocean floor on a poster for her part in a group project. Identify and describe the kinds of features found on the ocean floor.
Answer:
The Major features of the ocean floor are:
Continental ShelfContinental SlopeContinental RiseAbyssal PlainOceanic TrenchMid-Ocean RidgeExplanation:
1. Continental Shelf: This refers to the part of the land on every continent that is covered with water that is not too deep. The types of animals that can be found on the continental shelf are:
Crab, Tuna, Lobster, Dungeness cod, etc. Within the Continental shelf, there are permanent rocks that house other organisms such as sponges, anemones, clams, sponges, oysters. The continental shelf also contains the route of migration for bigger animals such as sea turtles dolphins and even whales.
2. Continental Slope: This spans from the shelf break to the continental rise. It can slope up to 4 degrees. Slopes can be created by faulting, slumping of huge boulders of sediments, rifting, etc.
Some of the aquatic animals that can be found in this region include but are not limited to:
Sablefish, Dover sole rockfish, etc.
3. Continental rise
This part of the ocean floor usually has a very steep gradient or angle slope. It slopes very steeply into the abyssal plain of the ocean.
The following can help form continental rise:
Mass wasting;deposition from contour currents and the longitudinal settling of biogenic and clastic particles4. Abyssal Plain.
This is the real bottom of the ocean. There is a very high probability that one would find animals such as nematodes, polychaetes, etc which are all types of worms down there. The Abyssal plain is also home to molluscs, and echinoderms.
5. Oceanic Trench
Sometimes there is a long and narrow indenture or depression along the seafloor. These are called Trenches. Trenches are sometimes formed by the boundaries between one lithospheric plate and another. The deepest trench on earth is found in the Pacific Ocean. It has been nick-named the Challenger Deep and said to be the deepest point known on earth reaching almost 11 kilometers.
6. Mid-Ocean Ridge
This is a mountain range underneath the ocean. It is formed when there is an upward push by convection currents of the mantle beneath the oceanic crust. When this happens and molten magma is ejected or created at the boundary between the plates, the result is a Mid-Oceanic Ridge.
Cheers
anyone know this? i’m having trouble...please help.
When two objects with neutral charges are brought together, the objects
a. attract each other
b. repel each other
c. all of the above
d. none of the above
Answer:
a. attract each other
Explanation:
With reference to He-4 (or the diagram), explain the term isotopes.
Answer:
Isotopes are basically atoms of an element that have an unequal number of neutrons and protons. Of course the proton number remains the same, but the neutron number either decreases or increases, which leads to an overall change in mass. However, no chemical properties of the atom/element are changed as the electrons are the same number and do not react. In regards to Helium 4, the original number of neutrons in Helium is 2, and protons 2 as well. We see an equal number of neutrons and protons, hence an unchanged mass, and the element is not an isotope.