Answers
Answer:
I would say B but you don't have to take my word for it
Answer:
D
Explanation:
Related Questions
breathe in air container more ____ than breathed out air
a hydrogen
b oxygen
c carbon dioxide
d helium
Answers
Answer:
c
Explanation:
carbon dioxide ......
Convert 132.5 cm into inches.
Answers
Answer:
52.165 inches
Explanation:
hope it help
Answer:
52.2 inches
Explanation:
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.
Answers
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:
Explain the impact the volcano has on the country of sicily and
surrounding areas?
Answers
Answer:
Dust, ashes, lava, no photosynthesis, land of death
Explanation:
Give the formula for trinitrogen hexafluoride
Answers
I think that’s it but I’m not quite sure
Which bond does this picture best represent?
A.Metallic bond
B.Ionic bond
C.Covalent bond
D.Cuteness overload
bond
Answers
Answer:
C is the answer they are looking for but clearly the truth is D
Explanation:
Can somebody please draw a mechanism for this reaction (synthesis of varenicline)?
Answers
Answer:
that is kinda hard I need to serch it up hold on
Use for questions 1-4
Zn + 2HCl → ZnCl2 + H2
1) If 0.8 moles of Zn are used,
how many moles of HCl are
required?
2) If 3.5 moles of Zn are used,
how many moles of HCl are
required?
3) If 4.8 moles of HCl are used,
how many moles of H, are
produced?
4) If 0.48 moles of ZnCl, are
produced, how many moles of
HCl are needed?
Answers
Answer: 1) 1.6 moles of HCl
2) 7.0 moles of HCl
3) 2.4 moles of hydrogen
4) 0.96 moles of HCl
Explanation:
The balanced chemical equation is:
[tex]Zn+2HCl\rightarrow ZnCl_2+H_2[/tex]
According to stoichiometry :
1 mole of [tex]Zn[/tex] require = 2 moles of [tex]HCl[/tex]
0.8 moles of [tex]Zn[/tex] will require=[tex]\frac{2}{1}\times 0.8=1.6moles[/tex] of [tex]HCl[/tex]
3.5 moles of [tex]Zn[/tex] will require=[tex]\frac{2}{1}\times 3.5=7.0moles[/tex] of [tex]HCl[/tex]
According to stoichiometry :
2 moles of [tex]HCl[/tex] produce = 1 mole of [tex]H_2[/tex]
4.8 moles of [tex]HCl[/tex] will require=[tex]\frac{1}{2}\times 4.8=2.4moles[/tex] of [tex]H_2[/tex]
According to stoichiometry :
1 mole of [tex]ZnCl_2[/tex] are produced by = 2 moles of [tex]HCl[/tex]
0.48 moles of [tex]ZnCl_2[/tex] are produced by =[tex]\frac{2}{1}\times 0.48=0.96moles[/tex] of [tex]HCl[/tex]
Energy does not change form. True or False
Answers
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.
How many grams of sodium are needed to
produce 1.67 moles of Na?
Answers
Answer:
38.41grams
Explanation:
Mass = 1.67×23 = 38.41g
Arrange the following atoms in order of decreasing atomic radius
Answers
Answer:
li
be
na
si
s
............. ..
Skill and
Serina is a ballet dancer. During her dance, she dances in a "Z" pattern on the stage. It takes her about 30 seconds to
complete the ®Z." The top and bottom of the "Z" are equal distances of about 3 meters each. The middle part of the "Z"
is about 6 meters long. How quickly (in meters per second) is she traveling during this part of the dance?
Answers
Answer:
2.5 m/s
Explanation:
total of 12 meters in 30 seconds
12x2.5=30
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.
Answers
Answer: density = mass/volume
Explanation:
The amount of matter in an object is ___ and a common unit is the ___.
A. mass, mL
B. volume, mL
C. volume, gram
D. mass, gram
Answers
Answer:
The answer is D
Explanation:
Mass is the amount of matter in an object and gram is the common unit of measurement of mass
What is the main problem with renewable energy
sources?
Answers
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.
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?
Answers
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].
What is electrical energy? Give an example.
Answers
Answer:
Specific examples of electrical energy include:
Alternating current (AC)
Direct current (DC)
Lightning
Batteries
Capacitors
Energy generated by electric eels
Explanation:
Electrical energy used for electric power, such as wall current used to power a light bulb or computer, is energy that is converted from electric potential energy. This potential energy is converted into another type of energy (heat, light, mechanical energy, etc). For a power utility, the motion of electrons in a wire produces the current and electric potential.
A battery is another source of electrical energy, except the electrical charges may be ions in a solution rather than electrons in a metal.
Biological systems also use electrical energy. For example, hydrogen ions, electrons, or metal ions may be more concentrated on one side of a membrane than the other, setting up an electrical potential that can be used to transmit nerve impulses, move muscles, and transport materials.
Help ASAP I will mark brainliest for the correct answer !!!⚡️⚡️⚡️
Answers
Answer:
mass
Explanation:
A gas at 1.5 atm had pits ressure decreased to 0.50 atm producing a new volume of 750 ml what was its original volume
Answers
Answer:
The original volume of the gas is 0.001 mL
Explanation:
This easy excersise can be solved by the law for gases, about pressure and volume; the volume of a gas is inversely proportional to the pressure it exerts.
We can propose the rule by this formula:
P₁ / V₁ = P₂ / V₂
We replace data given: 1.50 atm / V₁ = 0.50 atm / 750 mL
As the rule says, that volume is inversely proportional, and the pressure was decreased, volume must be lower than 750 mL.
1.5atm / (0.5 atm / 750mL) = V₁
V₁ = 0.001 mL
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
Answers
2. +6
3. 1-
4. 3-
5. +5
6. 2-
7. +1
8. 4-
Which of the following compounds would contain an electrostatic attraction as bonds between ions?
Answers
Answer:
Fe2O3
Explanation:
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?
Answers
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
Swinging a golf club toward a golf
ball and hitting it off the tee.
Answers
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,
Answers
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.
Compare and contrast the elements Potassium, K, and Neon, Ne. Use at least ten comparisons or descriptions.
I need this done asap!!!
Answers
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:
Most gases exist as molecules, for example, fluorine is F2.
Explain why the elements in Group 0 exist as single atoms.
Answers
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
Identify the element that can be found in the 5th period and 4th group on the Periodic Table.
As
Zr
Sn
V
Answers
The plantlets are uniform.
Answers
Answer:
yes they are < 3
Explanation:
Earth's surrounding atmosphere (all of the air in the world) is part of its __________.
A. biosphere
B. food chains
C. Niche
D. population
Answers
Answer:
im an idiot but i think its A
if im wrong im so sorry
Explanation:
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?
Answers
Hope this helps pls mark me brainliest