The mass and distance between two objects affects the strength of gravitational force.
What factors do you think might affect the strength of the electric force?
What you prefer cat or dog or pig?
Answer:
dog
Explanation:
cats hide and break stuff pigs will probally stay outside all day and i ove dogs
I prefer a pig
Benefits of having a pig
- you can eat them
- they taste good
- they have bacon
- Richard
- they are good to eat
- they taste very good because of the bacon
- you can cook them
- they are good cooked
What is virtual water?
a. water used in the production of services and goods that consumers need and enjoy
b. water used in the production of services and goods that consumers need and enjoy
c. water that has not yet fallen to Earth as precipitation and cannot be seen
d. water with low oxygen levels as a result of agricultural runoff from fields and feedlots
Virtual water is water used in the production of services and goods that consumers need and enjoy.
So, option A is correct.
Why do humans need virtual water?Virtual water is very important as it helps us understand the dependencies our economies have on others' resources.
In addition with the water footprint, virtual water enables us to map out the dependencies and to identify when and where risks may lie, in terms of scarcity and pollution as it's implications is found for food security, economy and diplomacy.
Virtual water is not water that has not yet fallen to Earth as precipitation and cannot be seen.
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Answer:
A and B are the same answer lol
Explanation:
Perrhenic acid reacts with potassium hydroxide. Complete the word equation for this reaction. perrhenic acid + potassium hydroxide ——> potassium perrhate + _______
Answer:
I am first time from from from from from from
Spring tides happen 2 times each month at the _and_phases
Neap tides happen 2 times each month at the _and_phases
Answer:
Spring tides happen 2 times each month at the New and Full phases
Neap tides happen 2 times each month at the First Quarter and Third Quarter phases
Silver + ... → Silver oxide
Answer:
Silver+ Hydroxide--> Silver oxide+ Water
Question 76 (1 point)
The volume of a gas is 4.00 liters at 293 K and constant
pressure. For the volume of the gas to become 3.00 liters,
the Kelvin temperature must be equal to
Oь
3.00 x 293
4.00
4.00 x 293
3.00
3.00 x 4.00
293
293
3.00 x 4.00
Ос
Od
Answer:
Yeah yeah i don't know what you want anybody to do with this question because you don't have all of your answers.
Helium is most likely to behave as an ideal gas when its under what?
Answer:
Low pressure and high temperature :)
Have an amazing day!!
Please rate and mark brainiest!!
3. Classify each reaction as exothermic or endothermic. (4 marks)
a. Energy + SO2(g) S(g) + O2(g) _________________________________
b. Draw a potential energy diagram for the reaction above:
Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction owing to te fact that energy is a reactant in the equation.
What is an endothermic reaction?An endothermic reaction is one in wioch energy is supplied to the system in order to enable the breakdown of bonds. Hence, the reaction vessel feels cool as energy is withdrawn from the surroundings.
The reaction; Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction since energy is a reactant in the equation.
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Which of the following is an example of an insoluble substance being added to water?
When added to water, the substance quickly falls to the bottom and then dissolves.
The substance has disappeared after being poured into the water.
The substance makes the water cloudy and then forms a layer on top of the water.
The water remains clear after the substance is stirred into the water with a spoon.
Answer:
Explanation: “Insoluble” generally means that a substance does not dissolve in water. Some examples include: sand, fats, wood, metals, and plastic. When we put them in water and try to mix them, they will not dissolve.
Explanation:
Chromium (lII) sulphate reacts with potassium carbonate to form chromium (III) carbonate and potassium
sulphate.
Skeleton equation:
Answer:
Cr2(SO4)3+K2CO3---------------->Cr2(CO3)3+K2SO4
BALANCING
Cr2(SO4)3+3K2CO3------------------------->Cr2(CO3)+3K2SO4
Explanation:
9. In a neutralization reaction, an acid and a base react to produce a an oxide and water.
true/false
Answer and Explanation: The answer is false.
A scientist is studying fish. She wants to sort many different kinds of fish into groups by the way they swim. Which characteristic would the scientist most likely use when grouping the fish? A. number of teeth B. fin position C. number of stripes D. body color
Answer:
B.fin position
C.colour of stripes
When we react an acid with a base a neutralisation reaction occurs.
What pH do you end up with?
Explanation:
Good question!
When you react an acid with a base,the pH of the product is determined by the concentrations of the reactants (the acid and the base)
If both reactants (acid and base) are strong,the pH of the product is 7
If the acid is stronger than the base,the pH of the product will be less than 7
If the base is stronger,the pH of the product will be greater than 7
I hope this helps
When referring to immunity, what does the term innate imply?
the mechanism will provide defense against many different types of pathogens
the mechanism will develop based upon exposure to specific pathogens
the mechanism will be built-in and present at birth
the mechanism will be acquired over an individual's lifetime
Answer:
Innate, or nonspecific, immunity is the defense system with which you were born. It protects you against all antigens. Innate immunity involves barriers that keep harmful materials from entering your body.
HELP ME ASAP!
what are some acidic experiments and what information will the experinments provide? And how is it important to do those exerinement?
Answer:
The pH scale measures whether there is more hydronium or hydroxide in a solution. In other words, it tells us how basic or acidic the solution is. A lower pH means something is more acidic, also known as a stronger acid. A higher pH means it is more alkaline or a stronger base.
Propane gas, C3H8, burns in excess oxygen gas. When the equation for this reaction is correctly balanced and all coefficients are reduced to their lowest whole-number terms, the coefficient for O2 is
(A) 4 (B) 5 (C) 7 (D) 10 (E) 22
Answer:
5
Explanation:
First find the balanced equation for this rxn
C3H8 + 5O2 ====> 3 CO2 + 4 H2O
To calculate the atoms of an element in a given molecule, we need to multiply stoichiometry by the number that is written on the foot of that element. The correct option is option A.
What is Balanced equation?Balanced equation is the one in which the total number of atoms of a species on reactant side is equal to the total number of atoms on product side. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, displacement reaction.
Propane gas, C[tex]_3[/tex]H[tex]_8[/tex], burns in excess oxygen gas. When the equation for this reaction is correctly balanced and all coefficients are reduced to their lowest whole-number terms, the coefficient for O[tex]_2[/tex] is 5.
C[tex]_3[/tex]H[tex]_8[/tex] + 5O[tex]_2[/tex] [tex]\rightarrow[/tex] 3 CO[tex]_2[/tex] + 4 H[tex]_2[/tex]O
Therefore, the correct option is option B.
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pls help!!! Three resistors are arranged in parallel with a voltage source. The values are 2 Ω, 5 Ω, and 7 Ω. Which branch will have the MOST current?
Answer:
The 2 ohm branch
Explanation:
Since the resistors are in parallel, they are each connected to the same volatage. Since I = V/R you can see that the one with the smallest resistance will have the greatest current through it .
Why would 60g at 10C of NaCl in 200g of water would be unsaturated?
Answer:
The amount of substance needed to saturate water increases as the temperature increases.
Explanation:
In order to make a covalent bond, the orbitals on each atom in the bond must overlap.
Answer:
true
Explanation:
Covalent bonds are formed through the overlap of half-filled valence orbitals. Because of the overlapping, it is most probable that electrons are located within the region of the bond.
In order to make a covalent bond, the orbitals on each atom in the bond must overlap. Therefore, the given statement is true.
What is covalent bond?A covalent bond is an electron exchange usually results in the production of electron pairs between atoms. These electron couples are referred to as bonding pairs as well as sharing pairs. Covalent bonding seems to be the permanent equilibrium of atoms' forces of attraction versus attraction when atoms share electrons.
Because to electron sharing, each atom in a number of molecules can achieve the corresponding amount of the valence shell, resulting inside a stable electronic configuration. In organic chemistry, covalent bonds are far more common than ionic ones. In order to make a covalent bond, the orbitals on each atom in the bond must overlap.
Therefore, the given statement is true.
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in titration, 25 mL of 0.2M NaOH neutralizes 20mL of HCl, what is the concentration of the HCl?
The concentration of the HCl solution needed to neutralize 25 mL of 0.2 M NaOH is 0.25 M
Balanced equationHCl + NaOH —> NaCl + H₂O
From the balanced equation above,
The mole ratio of the acid, HCl (nA) = 1The mole ratio of the base, NaOH (nB) = 1How to determine the concentration of HCl Volume of base, KOH (Vb) = 25 mLConcentration of base, NaOH (Cb) = 0.2 MVolume of acid, HCl (Va) = 20 mL Concentration of acid, HCl (Ca) =?CaVa / CbVb = nA / nB
(Ca × 20) / (0.2 × 25) = 1
(Ca × 20) / 5 = 1
Cross multiply
Ca × 20 = 5
Divide both side by 20
Ca = 5 / 20
Ca = 0.25 M
Thus, the concentration of the HCl solution is 0. 25 M
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What can a swarm of grasshoppers do to a farmers crop?
It could destroy the crops by jumping all over them
How is permeability related to the size of the grains that make up the sediment?
Answer:
In poorly sorted sediments, those with a larger range of grain sizes, the finer grains tend to fill the spaces between the larger grains, resulting in lower porosity. Primary porosity can range from less than one percent in crystalline rocks like granite to over 55% in some soils.
Explanation:
How much would a 10 kg suitcase weigh on the surface of…? a. The Moon b. Mars c. Saturn d. Pluto
Answer:
Is this the full question
Explanation:
Reply or love the message so i can get a notification
A buffer solution is prepared by adding NH4Cl to a solution of NH3 (ammonia).
NH3(aq) + H2O(I) = NH4+(aq) +OH-(aq0
What happens if Ca(NO3)2 is added?
Shifts to reactants, remain the same, shifts to products.
Please HELP!
I watched the video, but I still don't get it!
I don't know how this works
Answer:
Remains the same
Explanation:
I just got it right on Acellus!
In another experiment the student turreted 50.0
Answer:
is this a full question ????
Explanation:
What happens to the density of group 1 when you go down the group
the density increases down the group.
A metal (FW 311.8 g/mol) crystallizes into a face-centered cubic unit cell and has a radius of 2.86 Angstrom. What is the density of this metal in g/cm3
For a metal crystallizes into a face-centered cubic unit cell and has a radius of 2.86 Angstrom, the density is mathematically given as
d=3.31g/cm
What is the density of this metal in g/cm3Generally, the equation for the density is mathematically given as
[tex]d=\frac{2*m}{NA*a^3}\\\\Therefore\\\\d=\frac{2*295.6mol}{6.022*10^23*(6.67*10^{-3})}[/tex]
d=3.31g/cm
In conclusion, the density of this metal
d=3.31g/cm
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The Scotch broom is an invasive species in California, Oregon and Washington. These shrubs grow quickly after areas that have been cleared of
trees and inhibit reforestation by out-competing native seedling trees. These plants developed a mutation that causes their seed to burst from
their shell when touched by passing animals. As animals brush past these plants, the black dried pods of the Scotch broom explode with a sharp
pop, scattering seeds away from the parent plant.
Which statement below best explains why the Scotch broom is able to out-compete the native plants in that area?
A. Relying on animals to disperse the seeds always results in better reproductive success than other methods of seed dispersion.
B. Specialized seed pods allow seeds to be dispersed farther and into less crowded areas promoting reproductive success.
C. The crackling sound of seed pods exploding promotes reproductive success by attracting the animals that are responsible for scattering
seeds.
D. Genetic mutations have caused the plant to be more resistant to cold temperatures allowing them to survive and reproduce all year
long.
Based on the illustration, the statement that best explains why the Scotch broom is able to outcompete the native plants in the area would be the specialized seed pods that allow seeds to be dispersed farther and into the less crowded areas.
Reproductive successDifferent organisms have different ways of behaving to ensure the survival of their propagules or offsprings.
In the case of the Scotch broom, the ability of the pods holding the seeds to burst open and catapult the seeds far away from the parent plant is a reproductive strategy to ensure that their seeds are well dispersed.
By doing so, the propagules of the plant will reach new areas where they do not exist before and as such, able to spread quite quicker than the native plants.
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Which of the following is not a suggested strategy for treating or preventing a communicable disease?
Get vaccinated to prevent infection from a virus.
Receive a vaccine while you are ill from a virus.
Get tested for a suspected infectious disease.
Use hand sanitizer if soap isn't available.
The strategy that is not a suggested way of treating or preventing a communicable disease is to receive a vaccine while you are ill from a virus.
Treatment and prevention of communicable diseaseA communicable disease is a type of disease that can spread from one person to another in the following ways:
contact with blood and bodily fluids;breathing in an airborne virus, orbeing bitten by an insect.There are various ways to prevent the spread of communicable diseases which include:
Immunization against infectious diseases, washing of hands regularly or the use of hand sanitisers if soap is not available.Get tested for a suspected infectious diseaseTo receive a vaccine while ill from a virus is not advisable because there may be chances of spreading your illness to health care workers who are administering the vaccine.
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