an object is moving to the right at a constant veloxity. what will happen if a force of 20 N starts acting on it in the opposite direction
Answer:
Explanation:
The objects velocity will decrease because the force is opposing its motion
The equation below represents chemical reaction that occurs in living cells. C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + energy How many atoms are represented in the reactants of this equation?
Answer:
36
Explanation:
There are 6 Carbon atoms, 12 Hydrogen atoms, and 18 Oxygen atoms.
How many particles are present in 0.24 moles of carbon?
In a submarine beneath the ocean’s surface, a captain peered into a long tube to see possible threats in the sea and air above. This sight tube, called a periscope, was designed by the Frenchman Marie Davey in 1854. Davey’s periscope contained two mirrors, one placed at each end of a vertical tube. The mirrors were set parallel to each other and at 45 degrees to the vertical. The reflective surfaces faced each other. When light from an object on the surface reflected downward, an image appeared to the eye. People in submerged submarines could see what was above them!
Imagine you are in a submerged submarine looking through a periscope. What are some things you might see?
forces tending to pull two objects together?
Answer:
Explanation:
Gravity and oppositely charged particles will both experience attractive forces
How many moles of oxygen are needed to react with 100.0 grams of aluminum?
Answer:
2
Explanation:
According to the concept of valency, 2 moles of oxygen are needed to react with 100.0 grams of aluminum.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.
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give the systematic name for each compound. Spelling counts.
a)CIF(subscript 3)
b)CI(subscript 2)O(subscript 7)
Answer:
a) Chlorine Trifluoride
b) Dichlorine Heptoxide
GOOD LUCK FOR FUTURE! :)
3. What agency tracks the activities of typhoon that enters PAR?
A. Department of Education (DepEd)
B. Department of Social Welfare and Development (DSWD)
C. Department of Environment and Natural Resources (DENR)
D. Philippine Atmospheric, Geophysical and Astronomical Services
Administration (PAGASA)
4. Typhoon Grasya is 186 km away from Bislig City, and its landfall isexpected in 3.00 hr. What is the speed of the typhoon?
A. 60.0 kph
B. 61.5 kph
C. 62.0 kph
D. 63.5 kph
Answer:
3.
D. Philippine Atmospheric, Geophysical and Astronomical Services
Administration (PAGASA)
Explanation:
4.C. 62.0 kph
3) The agency that tracks the activities of typhoon that enters PAR is; D. Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA)
4) The speed of the typhoon is; C: 62 kph
3) PAR simply means Phillipines Area of responsibility.
Now this PAR is an area located at the Northwestern Pacific and it is the place where the Philippines' national meteorological agency called Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) usually monitors the weather occurrences.
This means that the typhoons that enter PAR would also be monitored by PAGASA.
4) we are given;
Distance of Typhoon Grasya from Bislig city; d = 186 km
Time at which landfall is expected; t = 3 hours.
Formula for speed is;
Speed = distance/time
Speed = 186/3
Speed = 62 kph
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This mineral can be scratched with a fingernail.
Fluorite
0 Gypsum
Quartz
Pretty sure it’s gypsum.
Define electronegativity
Answer:
The ability of an atom to attract electrons.
Explanation:
Electronegativity is the ability of an atom to attract electrons. In a bonded pair, electrons tend to stay closer to the more electronegative atom. Atoms become more electronegative near the top right of the Periodic Table, with the highest electronegativity being Fluorine.
will mark u the brainliest. You have 1.5 moles each of hydrogen gas (H2) and sulfur hexafluoride gas (SF6). At STP, these gases will both occupy the exact same volume (33.6L). Will the gases have the same mass? Why or why not?
Answer:
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Explanation:
When vinegar is added to some marble chips ( calcium carbonate) bubbles of gas are observed, what gas is produced and how can it be identified?
Answer:
By passing the gas through lime water
Explanation:
The equation of the reaction of vinegar with calcium carbonate in the form of marble chips is shown below;
CaCO3(s) + 2CH3COOH(aq) ---------> Ca(CH3COO)2(aq) + H2O(l) + CO2(g).
We can see from the reaction equation that the gas produced is carbon dioxide. This gas is identified by passing the gas through lime water. If lime water turns milky, then the gas is truly carbon dioxide.
The element with the atomic mass of 12 amu, and 6 nuetrons: (E2) A (B3) (D4) O (14)
Answer:like my photo bc i like it
Explanation:
omg i look .........................................
What is the boiling point of a solution of 1.20g of glycerol, C3H8O3, in 20.0 g of water?
What is the freezing point?
TB solution = 100.3315 °C
T freezing solution = -1.209 °C
Further explanationGiven
1.2 g glycerol
20 g water
Required
the boiling point
the freezing point
Solution
ΔTB = KB . m
ΔTF = KF . m
mass water = 20 g = 0.02 kg
Kb water = 0.51 °C/m
KF water = 1.86 °C/m
mol glycerol :
= 1.2 g : 92,09382 g/mol
= 0.013
molal : the number of moles of solute in 1 kg of solvent
molal of solution :
= 0.013 : 0.02
= 0.65 m
ΔTB = KB . m
ΔTB = TB solution - TB solvent
TB solution - 100 = 0.51 x 0.65
TB solution - 100 = 0.3315
TB solution = 100.3315 °C
ΔTF = KF . m
ΔT = KF . m
ΔTF = 1.86 x 0.65
ΔTF = 1.209
T_f = -1.209 °C
SHOW WORK
Calculate the morality
10.0 g of sodium chloride is dissolved in 2.0 L of solution.
3. Ni(NO2)3
What’s the name for the formula
The dashed line in the represent?
Answer:
Ok so, I would say D) because decreasing the blood glucose is actually recycling the organic chemicals. Your body uses everything in your body, filtering out the unusable chemicals and such.
Explanation:
Science :3
How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the following reactions?
(c) SO2(g) S(s) + O2(g) DH° = 297 kJ
Explanation:
Due to the positive value of the change in temperature, this is an endothermic reaction.
Since the forward reaction is endothermic, increasing the temperature increases the equilibrium constant (k).
In an equilibrium system, the position of the equilibrium will move in a way to annul the change made to the system. An increase in temperature for an endothermic reaction would favour the reaction, leading to increase in amount of products and decrease in amount of reactants.
What kinds of global disaster alerts and communication infrastructure can help mitigate the effects of natural disasters
Explanation:
Prior preparation is required in a location at risk of natural disasters, this includes a communication system and infrastructure aimed at protecting and educating society. Technology is extremely important for the prevention of natural disasters, through forecasting and monitoring systems it is possible to map and analyze the possible risks and anticipate them with the necessary solutions, such as removing a population from a certain location with a risk of drilling.
It is necessary for the population to be aware, understand the alerts and signals issued in case of risk and follow the guidelines of the trained authorities, in this way it is possible to mitigate the effects of natural disasters.
How does the angle of the incoming light affect the intensity of the light that is refracted?
Answer:
A reflected ray always comes off the surface of a material at an angle equal to the angle at which the incoming ray hit the surface. In physics, you'll hear this called the law of reflection. You've probably heard this law stated as "the angle of incidence equals the angle of reflection
Explanation:
differences between bright half and
Answer:
Explanation:
Bright half starts from a new moon day and ends on a full moon day
dark half starts from a full moon day and ends on a new moon day
Answer and Explanation:
The bright half is the side we see and the dark half is the other side.
If you're referring to the moon, the bright half starts on a new moon day and ends on a full moon, whereas on the other hand dark half starts ona full moon and ends in a new moon, kinda like cycle. There are practically the same and have no big astounding differences between them.
A student dissolved a small amount of baking soda in water and tested it with paper. The litmus paper turned blue. Is baking soda likely an acid or a base?
Answer:
The correct answer is - alkali or base.
Explanation:
The litmus paper test is used to find whether a solution is basic or acidic. In a litmus paper test, a litmus paper is a dip in a particular or desired solution that turns the color of litmus paper to red, blue, or purple based on the pH of the solution.
If the paper turns red it means the solution is acidic, in a neutral solution it turns to the purple color and if the blue color appears then it is a basic or alkali solution. The solution of baking soda turns litmus paper into blue color which means baking soda is most likely a base.
What happens to an egg that is not fertilized?
It is reabsorbed by the body.
It travels back up the fallopian tube.
It exits during childbirth.
It is released during menstruation.
Answer:
It's D.
Explanation:
When the egg is not fertilized, the thick uterus lining breaks down and the blood, tissues, and the unfertilized egg come out of the vagina commonly known as menstruation. When the egg is not fertilized the menstrual cycle takes place as the egg is shredded off from the body.
I need help on this please
thanks
Answer:
D. The flesh should return to normal after you press it.
Explanation:
The water content stored in the flesh of the fish, paired with the elasticity are both indicators of freshness, and will cause the flesh to return to normal after its been pressed.
non examples of chemical formulas
Answer:
1+2 = 12
Explanation:
this is a math equation, not a chemical formula
How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the following reactions?
(c) SO2(g) S(s) + O2(g) DH° = 297 kJ
I WANT IT NOW PLEASE
Explanation:
The reaction is given as;
SO2(g) ⇄ S(s) + O2(g) ΔH° = 297 kJ
This reaction is an endothermic reaction because of the positive value of the ΔH°. Increasing the temperature for an equilibrium reaction with froward reaction being endothermic leads to increase in equilibrium constant (K).
Regarding equilibrium concentration;
In an equilibrium reaction, any change to the system is annuled. If there is an increase in temperature, in order to annul that, the forward reaction is favoured leading to increase in concentration of of the products and decrease in reactants.
skateboarder left at 3:40 pm. The skateboarder arrived at 4:55 pm. How much time did
it take for him to get there?
How does pouring water extinguish fire?
Rafa places some copper into a solution of sodium chloride. No reaction takes place. Using the displacement theory, explain why no reaction took place?
Na more reactive than Cu
Further explanationGiven
Copper in a solution of NaCl
Required
The displacement theory
Solution
A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds
Not all of these reactions can occur. We can use the activity series, which is a list of elements that can replace other elements below / to the right of them in a single replacement reaction.
The voltaic series:
Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe²⁺-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Fe³⁺-Ag-Pt-Au
The electrode which is easier to reduce than the hydrogen (H2) electrode has a positive sign (E red= +) and is located to the right of the voltaic series (right of H)
The electrode which is easier to oxidize than the hydrogen (H2) electrode and is difficult to experience reduction has a negative sign (E red= -) and is located to the left of the voltaic series (left of H)
Reaction
Cu + NaCl≠
The existing copper element can not replace the sodium element, which is on the left side so the reaction will not occur.
But if it is reversed, then a reaction can occur
2 Na + CuCl2 → Cu + 2 NaCl
When products are being made as quickly as reactants, the reaction is said to have reached... what?
Answer: Equilibrium
Explanation:
The reactions which do not go on completion and in which the reactant forms product and the products goes back to the reactants simultaneously are known as equilibrium reactions.
For a chemical equilibrium reaction, equilibrium state is achieved when the rate of forward reaction becomes equals to rate of the backward reaction which means the products are being made as quickly as reactants
Equilibrium state is the state when reactants and products are present but the concentrations does not change with time.
Answer:
monke
Explanation:
because my mum told me we are all monke