Answer:
a. zinc because it is on top of them all in the reactive series so it reacts faster .
b. Ag because it is on the bottom of the reactive series and its reacts slow
Swinging a golf club toward a golf
ball and hitting it off the tee.
Identify the element that can be found in the 5th period and 4th group on the Periodic Table.
As
Zr
Sn
V
What temperature kelvin would .97mol of gas be to occupy 26L at 751.2mmHg?
Answer: 322.56 Kelvin
Explanation:
Use the Ideal Gas Law
[tex]PV=nRT[/tex]
R is the gas constant
T is the temperature in Kelvins
P is the pressure in atmospheres
V is the volume in liters
n is the number of moles of gas
First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.
[tex]751.2mmHg (torr) =0.988atm[/tex]
Now plug everything in
[tex](0.988)(26)=(0.97)(0.0821)T\\T=322.56K[/tex]
A sample of neon gas occupies a volume of 752 mL at 25 degrees Celsius. What volume will the gas occupy at -10 degrees Celsius?
Answer:
New volume v2 = 300.8 ml
Explanation:
Given:
Old volume v1 = 752 ml
Old temperature T1 = 25°C
New temperature T2 = -10°C
Find:
New volume v2
Computation:
Using Ideal gas law formula
V1T2 = V2T1
(752)(-10) = (V2)(25)
New volume v2 = 300.8 ml
What is invection or the definition
Answer:
here are some synonyms of invective are abuse, billingsgate, obloquy, and vituperation.
where do genes come form?
Answer:
im rly good with this stuff and i'm working on genetics and phenotypes and stuff.
Explanation:
information that determines your traits basically from your parents
facell's surface area-to-volume ratio increased from 3:1 to 4:1, what impact would that have on the transport of materials across the cell membrane? A. It would be unchanged B. transport would increase C. transport would decrease D. none of the above
Answer:
Concentration gradient, size of the particles that are diffusing, and temperature of the system affect the rate of diffusion. Some materials diffuse readily through the membrane, but others require specialized proteins, such as channels and transporters, to carry them into or out of the cell.
Explanation:
Hopefully this helps :)
Energy does not change form. True or False
Answer:
Energy can change form, so False
Answer: False
Explanation:Energy readily changes from one form to another. The law of Conservation of Energy states that "Energy cannot be created or destroyed.". In other words, the total amount of energy in the universe never changes, although it may change from one form to another. Energy never disappears, but it does change form.
What is the mass percentage composition of O in L-carnitine (C7H15NO3), a compound that is taken as a dietary supplement to re- duce muscle fatigue?
Answer in units of %. Your answer must be within ± 3.0%
Answer:
3.5% not sure but thank it is
Most gases exist as molecules, for example, fluorine is F2.
Explain why the elements in Group 0 exist as single atoms.
Group 0 is the noble gas elements in periodic table. They are all unreactive because, they have completely filled electronic configuration and thus they are stable. This stability to be a single element make them so.
What are noble gases?Noble gases are helium, neon, argon, krypton and xenon. They are 18th group elements in periodic table. Also called zero group elements. The general electronic configuration of these elements is ns² np⁶.
Noble gases contains eight electrons in their valence shell and thus completed octet. Atoms with less number of electrons in valence shell tends to attain octet by losing or gaining electrons to their valence shell.
Every elements except noble gases are electron deficient or electron rich. The electron rich elements will lose their electron to attain stability and the elements with less electrons gain them through bonding. That's why they are existing as molecules.
Therefore, the elements of zero group are highly stable and they do not lose or gain electrons to form molecules.
To find more about noble gases, refer the link below:
https://brainly.com/question/11764545
#SPJ2
How many grams of sodium are needed to
produce 1.67 moles of Na?
Answer:
38.41grams
Explanation:
Mass = 1.67×23 = 38.41g
Compare and contrast the elements Potassium, K, and Neon, Ne. Use at least ten comparisons or descriptions.
I need this done asap!!!
Answer:
K is a group 1 element while Ne is a group 0 element
K is a good reducing agent while Ne is inert
K is metal while Ne is a gas
K has one valence electron while Ne has no valence electron
Explanation:
A soccer player applies a force of 56.6 N to a soccer ball while kicking it. If the ball has a mass of 0.46 kg, what is the acceleration of the soccer ball?
Answer:
[tex]a=123.04\ m/s^2[/tex]
Explanation:
Given that,
Force applied to a soccer player, F = 56.6 N
The mass of the ball, m = 0.46 kg
We need to find the acceleration of the soccer ball. The force acting on the ball is given by :
F = ma
Where
a is the acceleration
[tex]a=\dfrac{F}{m}\\\\a=\dfrac{56.6 }{0.46 }\\\\a=123.04\ m/s^2[/tex]
So, the required solution is [tex]123.04\ m/s^2[/tex].
An object has a mass of 100kg and a volume of 10m^3.
What is its density?
SHOW WORK FOR FULL CREDIT
Answer:
Mass = 100g
Volume = 10 cm³
Density = Mass/Volume
= 100/10
= 10 cm-³
The diagram below shows the different phase transitions that occur in matter.
Solid
3
Liquid
16
Gas
Which arrow represents the transition in which dew is formed?
1
O2
4
6
Answer:
C.4
Explanation:
The arrow 4 represents the transition in which dew is formed.
What is Dew?This is formed as a result of condensation which takes place in the morning or evening and is usually seen on exposed surfaces as water droplets.
The air particles in the form of vapor under low temperatures results in the formation of the substance. The arrow 4 thereby depicts it and makes it the most appropriate choice.,
Read more about Dew here https://brainly.com/question/2696211
Determine the charges on the following examples:
1. An atom having lost two electrons
2. An atom having lost six electrons
3. An atom having gained one electron
4. An atom having gained three electrons
5. An atom having lose five electrons
6. An atom having gained two electrons
7. An atom having lost one electron
8. An atom having gained four electrons
Can somebody please draw a mechanism for this reaction (synthesis of varenicline)?
Answer:
that is kinda hard I need to serch it up hold on
hiii please help i’ll give brainliest
Answer:
the applied force is greater than the force of friction
Explanation:
Mercury metal is poured into a graduated cylinder that hold exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.
Answer: density = mass/volume
Explanation:
breathe in air container more ____ than breathed out air
a hydrogen
b oxygen
c carbon dioxide
d helium
Answer:
c
Explanation:
carbon dioxide ......
5. Molds and bacteria contain hydrolytic enzymes used to breakdown proteins,
lipids, etc.
a) (5 Points) Why does food not spoil as fast when it is refrigerated as it
would at room temperature?
b) (5 Points) Meat begins to feel slimy and it smells when it is spoiled due to
a decomposition reaction with oxygen and carbon dioxide. Why would
meats spoil less rapidly when left unsliced?
Answer:Temperature affects storage time and food deteriorates faster at higher temperatures. Microorganisms grow rapidly at room temperature . Thus to slow microbial growth, enzymatic and oxidative processes, food must be stored at room temperature.
Due to decomposition reactions with oxygen or carbon dioxide in the air, meat begins to feel slimy and smell spoiled. ... Because of its smaller surface area, the unsliced meat would have less collisions and therefore, a slower reaction rate.
Explanation:
Give the formula for trinitrogen hexafluoride
Earth's surrounding atmosphere (all of the air in the world) is part of its __________.
A. biosphere
B. food chains
C. Niche
D. population
Answer:
im an idiot but i think its A
if im wrong im so sorry
Explanation:
What is the main problem with renewable energy
sources?
Answer:
biggest problem with mainstream renewable energy is intermittency.
Answer:
the biggest problem with mainstream renewable energy is intermittency.
Wind power is only generated when it's windy.
Solar power is only generated when it's sunny.
This creates several fundamental issues.
HELP ASAP!!
A student mixes baking soda and vinegar in a glass. The results are shown at left. Do you think any new substances are being created in this mixture? If so, how do you know?
The specific heat of liquid H2O is 4.184 J/g°C. If 32.7 grams of water are heated from
12 °C to 77 °C, how much energy is required?
Look at picture
ASAP please will mark as brainlist don’t got much time
Answer:
8893.092J
Explanation:
energy= mass × specific heat capacity of water × change in temperature
=32.7×4.184×(77-12)
=8893.092J
The diagram represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor. The process of boiling water is considered to be a.
Answer:
Sorry i might be wrong but I believe the answer is evaporation
Explanation:
Its says the diagram So is there a diagram u can show us?
Answer:
physical change, because a new substance is formed
Explanation:
Does this make sense?
Makes sense to me but I would try and add another sentence in the middle to smooth it out some
Answer:
Yes, but you have a bit of grammar mistakes.
Explanation:
Mount. Vesuvius were an African boundary....
A solution has [H+] = 7.65*10^-3 what is the [OH-] in the solution?
Answer:
The hydroxide ion concentration in an aqueous solution, [OH-], in mol L-1, can be calculated if the pOH of the solution is known.
pOH is defined as the negative logarithm (to base 10) of the hydroxide ion concentration in mol L-1 pOH = -log10[OH-]
Explanation:
Which of the following is not a benefit of using biofuels instead of fossil
fuels?
A. Biofuels produce less carbon dioxide when combusted.
B. Biofuels are more sustainable than fossil fuels.
C. Biofuels are renewable.
D. Fossil fuels may be used in the production of biofuels,
Answer: Fossil fuels may be used in the production of biofuels.
Explanation: Defeats the purpose of using biofuels over fossil fuels if one contains the other.
Answer:
D
Biofuel Disadvantages:
Labor costs are high, and storage space is limited. Excessive water use, particularly in dry areas. Increasing biomass for biofuel production raises agricultural land requirements.