Answers
Related Questions
The plantlets are uniform.
Answers
Answer:
yes they are < 3
Explanation:
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]
Which statements correctly describe light (Select all that apply)
A. Light travels in a straight line
B. Light behaves in a predictable way
C.Light can be reflected or refracted
D.Light Curves around corners or obstructions
Answers
Answer:
The correct answers are C and D.
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
What captured energy from the sun? It produced oxygen as a
by product? *
Outgassing
O Photosynthesis
O Greenhouse Effect
O Global Warming
Answers
Swinging a golf club toward a golf
ball and hitting it off the tee.
Answers
At what elevation would there be the highest atmospheric pressure?
Answers
Answer:
The highest sea-level pressure on Earth occurs in Siberia
Explanation:
where the Siberian High often attains a sea-level pressure above 1050 mbar (105 kPa; 31 inHg), with record highs close to 1085 mbar (108.5 kPa; 32.0 inHg).
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.
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
Which of the following compounds would contain an electrostatic attraction as bonds between ions?
Answers
Answer:
Fe2O3
Explanation:
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-
D
Learning Task : Read the statement below, draw THUMBS UP ($) if you agree
with the statement and THUMBS DOWN ( P )if not. Explain the reason for your
answer. Do this activity in your answer sheet.
1. Mom and Dad provide my basic needs.
2. Security is the priority of my parents.
3. Parents give love and care to their children.
4. We live under the bridge because our parents are jobless.
5. I get what I want from my parents.
Answers
Answer:
1. Mom and Dad provide my basic needs.($)
2. Security is the priority of my parents.($)
3. Parents give love and care to their children.($)
4. We live under the bridge because our parents are jobless.(P)
5. I get what I want from my parents.($)
Explanation:
Yes, Mom and Dad provide my basic needs and provides everything which I need in my life. They provide security and love to their children. They do everything for our happiness and success. They sacrifices their dreams for their children and work day and night to give a good life to their children so parents are the blessing of God and we should respect and take care in their older age.
Convert 132.5 cm into inches.
Answers
Answer:
52.165 inches
Explanation:
hope it help
Answer:
52.2 inches
Explanation:
breathe in air container more ____ than breathed out air
a hydrogen
b oxygen
c carbon dioxide
d helium
Answers
Answer:
c
Explanation:
carbon dioxide ......
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.
Help ASAP I will mark brainliest for the correct answer !!!⚡️⚡️⚡️
Answers
Answer:
mass
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:
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!!!!! I KNOW YALL CAN HELP ...ASAP
Answers
Answer:
The molecules in a solid are very close together and move very slowly. As the mixture was shaken in the ice, the cold slowed the molecules down, and they moved closer together. The liquid turned into a solid.
Explanation:
Good luck :)
Give the formula for trinitrogen hexafluoride
Answers
I think that’s it but I’m not quite sure
Identify the element that can be found in the 5th period and 4th group on the Periodic Table.
As
Zr
Sn
V
Answers
Arrange the following atoms in order of decreasing atomic radius
Answers
Answer:
li
be
na
si
s
............. ..
What type of testing can reveal the precense of blood?
Answers
Answer: precipitin test
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
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
in the reaction :N2 + 3H2----2NH3 how many grams of H2 are needed to produce 1 mole on ammonia
Answers
The number of grams that are needed to produce 1 mole on ammonia is to be considered as the 1.52 g Hz.
Calculation of the number of grams:Here we begins the moles of ammonia for production after this it convert the number of moles of h2 for getting one mole of ammonia and then finally convert into grams
So it be like
[tex]= 1\ mol NH_3 \frac{3H_2}{2NH_3}\frac{1.01g }{1\ mol H_2}[/tex]
= 1.52 g Hz
Hence, The number of grams that are needed to produce 1 mole on ammonia is to be considered as the 1.52 g Hz.
Learn more about grams here: https://brainly.com/question/10822689
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:
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
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:
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: