The role of conservation of linear momentum is important to your safety as a pedestrian or a motorist because you will avoid being hit by car.
Conservation of linear momentumThe principle of conservation of linear momentum states that the sum of the initial momentum of an isolated system is equal to the sum of the final momentum.
The role of conservation of linear momentum is important to your safety as a pedestrian or a motorist because you will avoid being hit by car which is in motion, knowing that impulse you will receive will be equal to the change in the momentum of the car.
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4. Compare and contrast the 2 reactions below and balance the reactions. Which reaction is
endothermic and which reaction is exothermic?
The first reaction is exothermic reaction because it release energy whereas the seocond equation is endothermic reaction due to absorption of energy.
Endothermic Reaction
The energy is absorbed from the surrounding environment in susch type of reaction. Energy is absorbed in the form of heat.
Exothermic ReactionThe energy is released from the reaction to its environment in this type of reaction. Energy is released as heat, electricity, light or sound.
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Please answer this
The compound CO2(s) sublimes readily at 25°C. Which properties are usually associated with a compound that undergoes this kind of change?
1. High vapor pressure and high intermolecular attractions
2. High vapor pressure and low intermolecular attractions
3. Low vapor pressure and high intermolecular attractions
4. Low vapor pressure and low intermolecular attractions
Giardiasis is an intestinal parasite that can transmitted through person-to-person contact and infested swimming pools. This parasite is best classified as
nosocomial.
inherited.
contagious.
iatrogenic.
asymptomatic.
Answer:
I think it would be Contagious.
Explanation:
You get it from another person or from food and thats contagious.
A chemical reaction that has the general formula of ab c → cb a is best classified as a reaction.
Answer:
single replacement
Explanation:
Single replacement is when the molecules switch with each another
for example:
Zn + CuCl₂→ZnCl₂ +Cu
Answer:
replacement
Explanation:
Question 3 someone help me please
Answer:
False ....
first of all gas is not the desirable product of combustion
Which statement best describes how deflating a soccer ball is evidence of matter?
The ball changes shape from round to flat.
The ball increases size and shape.
The mass of the ball has increased.
The temperature outside the ball has changed.
HELP PLS WILL MARK BRAINLIEST
use the Gizmo to create a path for carbon that begins and ends in the atmosphere. Fill in the steps in the path below. Then, label each location with the system it represents. Finally, summarize very briefly how the carbon atom got to that location.
The pictures show different organisms. Which characteristic do all organisms share?
A- All organisms are made of cells.
B- All organisms have cells with cell walls.
C- All organisms have cells with a nucleus.
D- All organisms can make their own food.
gIAnswer: It b
Explanation:
What are economic challenges that governments must face? check all that apply. threats of war unemployment low production inflation low voter turnout
The economic challenges that government must face are unemployment, low production, and inflation.
What are economic challenges?Economic challenges are problems related to the production of goods and services to satisfy unlimited wants.
Thus, the correct options are 2. Unemployment.
3. low production.
4. inflation.
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Answer:
B,C,D
Explanation:
took the test
The vertical columns on the periodic table are known as:.
Answer:
groups
Explanation:
In chemistry, the vertical columns are known as groups and the horizontal columns are known as periods.
When balanced, which equation would have the coefficient 3 in front of any of the reactants? zn hcl zncl2 h2 h2so4 b(oh)3 b2(so4)3 h2o fe agno3 fe(no3)2 ag c2h4o2 o2 co2 h2o
The balanced equation which have the coefficient 3 in front of any of the reactants is 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O.
What are balanced equation?Those chemical equations in which number of each atoms pesent in reactant side as well as on product side is always equal to each other.
Let us consider the balanced equations for the given chemical reactions are:
Zn + HCl → ZnCl₂ + H₂Balanced form of the above reaction will be written as Zn+2HCl → ZnCl₂+H₂ where all atoms are present in equal quantity.
H₂SO₄ + B(OH)₃ → B₂(SO₄)₃ + H₂OBalanced form of the given reaction will be written as 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O, where coefficient 3 is present in before sulphuric acid and water molecule.
Fe + AgNO₃ → Fe(NO₃)₂ + AgBalanced form of above reation will be written as Fe+ 2AgNO₃ → Fe(NO₃)₂ + 2Ag.
C₂H₄O₂ + O₂ → CO₂ + H₂OBalnced form of above chemical equation will be represented as C₂H₄O₂ + 2O₂ → 2CO₂ + 2H₂O, and coefficient 3 is not used any where.
The quation which have the coefficient 3 is 3H₂SO₄ + 2B(OH)₃ → B₂(SO₄)₃ + 3H₂O.
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Answer: It's 3. H2SO4 + B(OH)3 B2(SO4)3 + H2O
A solution contains 5. 120 moles of Li2SO3 with a molarity of 6. 750 M. What is the volume of this solution
Answer: 0.759 L
Explanation:
molarity = moles of solute / liters of solution
so, 6.750 = 5.120 / liters of solution
liters of solution = 5.120/6.750 = 0.759 L
For the reaction below , label each reactant as an electron pair acceptor or electron pair donor and as a Lewis acid or a Lewis base. AlCl 3 +Cl^ -; AlCl 4 ^ -
Since the reaction shown in the question is an acid - base reaction in the Lewis sense; the Lewis acid here is AlCl3 while the Lewis base here is Cl^- .
What is a Lewis acid?A Lewis acid is a substance that accepts electron pair while a Lewis base donates an electron pair.
Now consider the given reaction; AlCl3 +Cl^- ------> AlCl 4 ^-. The Lewis acid here is AlCl3 while the Lewis base here is Cl^- .
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sodium chloride procedure
Answer: Dissolve approximately 3 mg of Sodium Chloride in 2 mL of water.
Add 0.4 mL of silver nitrate TS and acidify with diluted nitric acid.
What is the apparent brightness of a star?
How bright it actually is
How bright it is compared to the sun
How bright it is from Earth
How bright it is from a certain distance
Answer:
it's bright where you can see it it's not that bright compared to the sun from Earth it's really not so bright
Water can act as both an acid and a base in an ionization reaction to form H') and OH ions.
What is this phenomenon called?
O self-ionization
O neutralization
O acid dissociation
O base dissociation
Answer:
neutralization
Explanation:
Water is a very interesting compound.It has tendency to both donate and accept a pair of electronsWhen it accepts it forms H_3O+ to be lewis acid.When it donates it forms OH- to be Lewis baseTo determine the limiting reactant in a chemical reaction, one must know the:.
Answer:
The available amounts of each reactant
Explanation:
The limiting reactant is the reactant that will limit the equation.
For example, I have 2N2 and H2O. In this situation, H2O would be the limiting reactant since there is only one atom, while N2 has two atoms.
Think of it like you're making peanut butter and jelly. You have 50 cans of peanut butter and only 10 jelly. Which means you can only make sandwiches using 10 jars of jelly and 10 jars of peanut butter.
The lithosphere (crust) is broken into sections called ____, which float on top of the asthenosphere.
Answer: Tetonic plates
Explanation: just because
What type of substance reacts with limestone (caco3) and produces carbon dioxide gas? a neutral substance a base an acid both an acid and a base
The type of substance which reacts with limestone and produces carbon dioxide gas is an acid.
What is limestone?Limestone is a basic compound with a molecular formula CaCO₃ and it reacts with acid to produce carbon dioxide gas.
Reaction between the limestone and an acid known as hydrochloric acid to produce carbon dioxide gas, water molecule and calcium chloride salt as:
CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
Hence required substance is an acid.
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Answer:
c on edge
<3 hope this helps people.
How many moles of oxygen are necessary to generate 28 moles of water, according to the following equation: 2H2+O2→2H2O
The number of moles of oxygen required to generate 28 moles of water from the reaction is 14 moles
Balanced equation2H₂ + O₂ —> 2H₂O
From the balanced equation above,
2 moles of water were obtained from 1 mole of oxygen
How to determine the mole of oxygen neededFrom the balanced equation above,
2 moles of water were obtained from 1 mole of oxygen
Therefore,
28 moles of water will be obtained from = 28 / 2 = 14 moles of oxygen
Thus, 14 moles of oxygen are needed for the reaction
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Global warming is an ongoing issue for debate. True or False? Question 2 options: True False
Answer:
(True) The answer to that is yes, global warming is a hotly debated topic.
Explanation:
As a matter of political controversy, global warming is often viewed from different political perspectives. Which is why it is still an issue. (In 1988, global warming became a topic of discussion.) A number of climate change-related phenomena are occurring due to climate change, including rising temperatures, droughts and wildfires, changing precipitation patterns, glaciers melting, and rising sea levels.
Hope this helps! :D
The pH of a solution prepared by dissolving 0. 350 mol of solid methylamine hydrochloride (CH3NH3Cl) in 1. 00 L of 1. 10 M methylamine (CH3NH2) is ________. The Kb for methylamine is 4. 40 ⋅ 10-4. (Assume the final volume is 1. 00 L. )
For the pH of a solution prepared by dissolving 0. 350 mol of solid methylamine hydrochloride, the pH is mathematically given as
pH = 11.14
What is the pH value of a solution prepared by dissolving 0. 350 mol ?Generally, the equation for the pKb is mathematically given as
pKb = -logKb
Therefore
pKb of CH3NH2 = -log(4.40×10-4)
pKb of CH3NH2= 3.36
Hence
pKa= 14 - pKb
pKa= 14 - 3.36
pKa= 10.64
In conclusion, using
pH = pKa + log([A-]/[HA])
pH = 10.64 + log(1.10M/0.350M)
pH = 11.14
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Which of these elements is the odd one out? Li Na Mg K Rb Cs
I need help with this ( look at the picture I put)
Answer:
12 H, 18 O, 6 C
Explanation:
[tex]6H_{2} O + 6CO_{2} -- > C_{6}H_{12} + 6O_{2}\\[/tex]
___________________
first, we'll fo the h on the first equation: [tex]6H_{2}[/tex]
multiply the 6 and 2 to get twelve.
in the second equation, we see that there is [tex]H_{12}[/tex]
so, in both there are 12 H.
__________________
Now we'll do O.
in the first equation we have [tex]6O + 6O_{2}[/tex]
so we have 6 + (6*2) or 6 + 12, which gives us 18
in the second equation we have [tex]O_{6} + 6O_{2}[/tex]
it's basically the same thing, just written differently, so we have 18.
__________________
Finally, C.
In the first equation, we have [tex]6C[/tex]
in the second [tex]C_{6}[/tex], again, same thing expressed differently.
both have 6 C.
Martin makes new cereal flavors for a major corporation. Which type of research tool would BEST help him to determine if people enjoy the new flavors?
Answer:
Surveys
Explanation:
Martin can make an interaction with people and take surveys to know whether people likes the new flavors.
What are surveys?Surveys are research techniques used to gather data from a designated group of respondents in order to learn more and acquire insights into a range of interesting topics. Depending on the methodology chosen and the objective of the study, they can be conducted in a variety of methods and serve a variety of objectives.
Direct questions to clients are the best approach to get information from them. Surveys are a good way to achieve it if you have a well-thought-out strategy.
Companies can use surveys to gather data to develop strategies and maintain the satisfaction of their employees and consumers while looking for solutions based on the results.
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#SPJ2
A chemist combines 300 mL of a 0.3 M Na2SO4 solution with 200 mL of 0.4 M BaCl2 solution. How many grams of precipitate form
The mass of the precipitate, BaSO₄ obtained from the given reaction is 18.64 grams
How to determine the mole Na₂SO₄Volume of Na₂SO₄ = 300 mL = 300 / 1000 = 0.3 LMolarity of Na₂SO₄ = 0.3 MMole of Na₂SO₄ =?Mole = Molarity x Volume
Mole of Na₂SO₄ = 0.3 × 0.3
Mole of Na₂SO₄ = 0.09 mole
How to determine the mole of BaCl₂Volume of BaCl₂ = 200 mL = 200 / 1000 = 0.2 LMolarity of BaCl₂ = 0.4 MMole of BaCl₂ =?Mole = Molarity x Volume
Mole of BaCl₂ = 0.4 × 0.2
Mole of BaCl₂ = 0.08 mole
How to determine the limiting reactantBalanced equation
Na₂SO₄(aq) + BaCl₂(aq) —> BaSO₄(s) + 2NaCl(aq)
From the balanced equation above,
1 mole of BaCl₂ reacted with 1 mole of Na₂SO₄.
Therefore,
0.08 mole of BaCl₂ will also react with 0.08 mole of Na₂SO₄.
From the above illustration, we can see that only 0.08 mole of Na₂SO₄ out of 0.09 mole given is neede to react completely with 0.08 mole of BaCl₂.
Therefore, BaCl₂ is the limiting reactant
How to determine the mass of the precipitate (BaSO₄) formedBalanced equation
Na₂SO₄(aq) + BaCl₂(aq) —> BaSO₄(s) + 2NaCl(aq)
From the balanced equation above,
1 mole of BaCl₂ reacted to produce 1 mole of BaSO₄.
Therefore,
0.08 mole of BaCl₂ will also react to produce 0.08 mole of BaSO₄.
The mass of BaSO₄ can be obtained as follow
Mole of BaSO₄ = 0.08 mole Molar mass of BaSO₄ = 137 + 32 + (16×4) = 233 g/mol Mass of BaSO₄ =?Mass = mole × molar mass
Mass of BaSO₄ = 0.08 × 233
Mass of BaSO₄ = 18.64 g
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Wind power was first used in the 1970s.
A. true
B. false
Answer:
B. false
Explanation:
Answer:
B (false)
Explanation:
Because, the earliest recorded evidence of wind energy being used dates to around 5000 BC in Egypt, where the sail was invented to catch the wind and propel boats along the River Nile
how do you prepare saturated solution NaCl at 40°c?
Which beaker has the least thermal energy?
A. Beaker D
B. Beaker A
C. Beaker B
D. Beaker C
Answer:
________________________________
✏️ QUESTION:which doctor has the least thermal energy?
A. beaker D
B. beaker A
C.beaker B.
D. beaker C
________________________________
✏️ ANSWER:A. beaker D..
________________________________
#LetsEarthBreath
Balancing _CH4+_CO2=_CCl4+_HCL
Explanation:
the equation is wrong, please make sure you typed it correctly. because there is no way methane and carbon dioxide can give carbon tetra chloride and hydrogen chloride gas. It's impossible, the reactants and products donot match. Re-write the equation correctly again