Answer:
B
Explanation:
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.
How many moles of Aluminum are in 54.0 grams of Aluminum (Al)?
Answer: 2 moles
Explanation:
AM of Al 27
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.
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! :)
Define Fusion and Fission.
I just need a summed up answer.
Answer:
Fission and fusion are two physical processes that produce massive amounts of energy from atoms. They yield millions of times more energy than other sources through nuclear reactions.
Explanation:
Hope this answer your question.
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.
Describe the relationship between speed and kinetic energy.
A) A positive linear relationship
B) A negative linear relationship
C) A negative but not linear relationship
D) A positive but not linear relationship
Answer:
D) A positive but not linear relationship
Explanation:
This comes from the equation Ek=1/2mv^2
Where Ek is Kinetic Energy, m is mass, and v is the speed (or velocity).
As we can see in the equation, the relation is not linear but quadratic and it is positive.
Answer:
D) A positive but not linear relationship
Explanation:
Speed is equal to distance divided by time. ... Therefore, the kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four.
How many particles are present in 0.24 moles of carbon?
What causes a liquid resistance to flow
What type of reaction is the following: *
2C4H10 + 1302 – > 8C02 + 10,0
synthesis
decomposition
combustion
double displacement
Answer:
it is synthesis reaction
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:
How is Muscular Strength measured and why is this important to know?
Answer:
Your ability to move and lift objects refers to muscular strength. It's measured by how much force you can exert for a short period of time and how much weight you can lift.
Explanation:
Calculate the percent of each component in the mixture. Show your calculations. Circle final answers.
Answer:
See Explanation
Explanation:
The question is incomplete; as the mixtures are not given.
However, I'll give a general explanation on how to go about it and I'll also give an example.
The percentage of a component in a mixture is calculated as:
[tex]\%C_E = \frac{E}{T} * 100\%[/tex]
Where
E = Amount of element/component
T = Amount of all elements/components
Take for instance:
In [tex](Ca(OH)_2)[/tex]
The amount of all elements is: (i.e formula mass of [tex](Ca(OH)_2)[/tex])
[tex]T = 1 * Ca + 2 * H + 2 * O[/tex]
[tex]T = 1 * 40 + 2 * 1 + 2 * 16[/tex]
[tex]T = 74[/tex]
The amount of calcium is: (i.e formula mass of calcium)
[tex]E = 1 * Ca[/tex]
[tex]E = 1 * 40[/tex]
[tex]E = 40[/tex]
So, the percentage component of calcium is:
[tex]\%C_E = \frac{E}{T} * 100\%[/tex]
[tex]\%C_E = \frac{40}{74} * 100\%[/tex]
[tex]\%C_E = \frac{4000}{74}\%[/tex]
[tex]\%C_E = 54.05\%[/tex]
The amount of hydrogen is:
[tex]E = 2 * H[/tex]
[tex]E = 2 * 1[/tex]
[tex]E = 2[/tex]
So, the percentage component of hydrogen is:
[tex]\%C_E = \frac{E}{T} * 100\%[/tex]
[tex]\%C_E = \frac{2}{74} * 100\%[/tex]
[tex]\%C_E = \frac{200}{74}\%[/tex]
[tex]\%C_E = 2.70\%[/tex]
Similarly, for oxygen:
The amount of oxygen is:
[tex]E = 2 * O[/tex]
[tex]E = 2 * 16[/tex]
[tex]E = 32[/tex]
So, the percentage component of oxygen is:
[tex]\%C_E = \frac{E}{T} * 100\%[/tex]
[tex]\%C_E = \frac{32}{74} * 100\%[/tex]
[tex]\%C_E = \frac{3200}{74}\%[/tex]
[tex]\%C_E = 43.24\%[/tex]
Write a paragraph that would persuade your family members and neighbors to wear their face mask whenever they gout from their homes and to observe physical distancing with another. Follow the tips for structuring a persuasive piece.
Answer:
going without without masks is like to play with a dirty things which is very undesired and unwanted .corona virus is very serious world wide epidemic which is surrounded in all region due to our carelessness many lives are taken due to our carelessness. so please wear mask and maintain social distance to fight against all types of communicable diseases. I hope please be rational and aware.
Answer:
Hola porfa ayudame si podes
non examples of chemical formulas
Answer:
1+2 = 12
Explanation:
this is a math equation, not a chemical formula
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
Read more about activities of meteorology at;https://brainly.com/question/11857753
CAN ANYONE HELP ME PLEASE!!
Answer:
26.34 moles
Explanation:
How many grams are there in 3.4 x 10^24 atoms of He?
Group of answer choices
2.07
5.7 g
0.57 g
20.7
Given :
Number of He atoms, [tex]n = 3.4\times 10^{24}[/tex] atoms.
To Find :
How many grams are their in given number of He atoms.
Solution :
We know, molecular mass of He is 4 g. It means that their are [tex]6.022 \times 10^{23}[/tex] atoms in 4 g of He.
Let, number of gram He in [tex]3.4\times 10^{24}[/tex] atoms is x , so :
[tex]x = \dfrac{3.4\times 10^{24}}{6.022\times 10^{23}}\times 4\\\\x = $$22.58\ g[/tex]
Therefore, grams of He atoms is 22.58 g .
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.
SHOW WORK
Calculate the morality
10.0 g of sodium chloride is dissolved in 2.0 L of solution.
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
7.The number of protons is represented by the element’s
a.atomic number
b.mass number
c.atomic mass
d.isotope
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.
How many grams are there in 0.250 moles of Ba(NO3)2?
Answer:
261.3368
Explanation:
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Ba(NO3)2, or 261.3368 grams.
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.
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
Hey guys. Sorry for all the questions. But I’m checking my answers for a Science test. Here are my questions.
1. Which type of energy does moving water have?
A. Electrical
B. Wind
C. Kinetic
D. Potential
2. A teacher walks quickly by a student sitting at her desk. Which term describes what the student observed?
A. Speed
B. Motion
C. Position
D. Force
Thank you!!
Answer:
1. c 2. b that's what i think i learned this in middle school i dont completely remember
(ii) When shale gas is burned, the hydrogen sulfide reacts with oxygen.
2H2S + 3022SO2 + 2H2O
Explain how the combustion of shale gas can lead to the formation of acid rain.
Answer:
See explanation
Explanation:
Now , we have the equation of the reaction as;
2H2S(g) + 302(g)------->2SO2(g) + 2H2O(g)
This equation shows that SO2 gas is produced in the process. Let us recall that this same SO2 gas is the anhydride of H2SO4. This means that it can dissolve in water to form H2SO4
So, when SO2 dissolve in rain droplets, then H2SO4 is formed thereby lowering the pH of rain water. This is acid rain.
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
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