Answers
Answer: C, the number of atoms stay the same
Explanation:
The number of atoms remains the same before and after the reaction. This is because of the Law of Conservation of Mass, which states that matter cannot be created or destroyed in a chemical reaction. In the case of methane burning, one molecule of methane (CH4) reacts with two molecules of oxygen (O2) to produce one molecule of carbon dioxide (CO2) and two molecules of water (H2O). The total number of atoms on both sides of the equation is conserved.
Related Questions
Name the 5 characteristics needed for a substance to be a mineral
Answers
naturally occuring, solid, inorganic, crystalline, structure, ans the same chemical composition throughout.
Answer:
A mineral has to be naturally occurring, inorganic, solid, crystal structure and definite chemical composition.
Explanation:
Place the events in the order that they must occur for a fossil to be formed in sedimentary rock.
Answers
Oxygen in the air can react with wood when a match is burned. Ash is produced.
Which statement would be true?
A. The atoms of the ash did not exist before.
B. Ash has similar properties to oxygen.
C. The atoms of wood and oxygen disappear during the burning.
D. Ash is a different substance than wood.
Answers
Answer:
D. Ash is a different substance than wood.
Answer:
D the atoms of ash did not exist before
Explanation:
because I jnwo .... k
PLEASE HELP
Sheila and Jerome are lab partners. They have the following materials at their table:
1 square of aluminum foil, 1 stirring rod, 1 beaker of water, 1 scoop of copper II chloride salt (blue color)
Step 1:Jerome adds all the salt to the water and stirs. The salt crystals disappears and the liquid solution turns a clear blue.
Step 2: Sheila tears up the aluminum foil into small pieces.
Step 3: Jerome dares her to put the foil in his beaker. They see the edges of the foil turn a rusty orange. As they stir, the beaker becomes warm to the touch and a vapor begins to rise from the surface of the beaker. Within a few minutes, the foil has disappeared and the liquid is now clear. There are orange-rust colored flakes floating in the liquid.
Q: Jerome claims that when the salt was added to the water it turned blue and the foil disappeared, these were chemical changes. He went on to explain that the chemical change was due to the fact that the atoms were speeding up. Sheila disagrees claiming that 1 is a physical change and 1 is a chemical change and Jerome’s evidence is incorrect. Who is correct, Jerome or Sheila? Write a scientific explanation (CER) to support your argument.
Answers
Answer:
jerome
Explanation:
and do u need the reason why if so comment back to this
Please help!!! Hydrogen and oxygen undergo a chemical reaction to form water. How much water will be created if hydrogen has a mass of 3.56 g and the oxygen has a mass of 25.32 g?
Actual answers only please :)
Answers
Answer:
22.88g
Explanation Hope this helped <3
Which phrase describes a feature of groundwater?
-feeds rivers
--provides habitats
-makes up 75% of fresh water
--used for hydroelectric power
Answers
Answer:
number 1
Explanation:
Groundwater mainly contributes the water into the surface water like streams, rivers, and lakes.
Groundwater feeds rivers describes it feature.
What is ground water?Groundwater refer to the water that is below Earth's surface and they infiltrate the fractures of rock formations and spaces between sediments.
Ground water replenish the rivers, streams and lakes.
Therefore, Groundwater feeds rivers describes it feature.
Learn more on groundwater from the link below.
https://brainly.com/question/9617
PLS HELP (science)
Match the following molecules with the number of atoms they contain.
1. 2Fe
seven
2. 2Al 3O 2
eight
3. 4O 2
two
4. 5C
five
5. H 2SO 4
ten
Answers
Answer:
hello I will answer ur question if u answer mine
Explanation:
2. Ten
3. Eight
4. Five
5. Seven
Just count the number number of substances, the subscript(number at the bottom) tells you how many of it there is. Then you check if there is a coefficient(number in front of all the substances) and if there is a number you multiply you previous answer by it. The coefficient tells you how many molecules there is. Your final answer is the number of atoms!
Helena uses the same force to move an object that has a mass of 12 kg and an object that has a mass of 5 kg. She predicts the 12 kg object will have a greater change in motion. Is she correct?
No, the object with the smaller mass will have a greater change in motion.
No, both of the objects will have an equal change in motion.
Yes, the object with the larger mass will have a greater change in motion.
No, neither object will have a change in motion.
Answers
Answer:
No, the object with the smaller mass will have a greater change in motion.
Explanation:
Hope this helps!
why does atumn start in diffrent months of the year in north america and south america
Answers
Answer:
because the sun is further away due to the earth's axis
What type of force is known for exerting an upward force on objects in a fluid?
1. buoyant force
2. friction force
3. gravitational force
4. magnetic force
The First person to answer will get the brainliest!!!!!!
Answers
Answer:
The answer is 1, Buoyant force.
Explanation:
can someone solve this question please
Answers
Answer:
MgO + 2 HNO3 → Mg(NO3)2 + H2O
Explanation:
An object has a mass of 960 g and a volume of 15cm3 what’s the density?
Answers
Explanation:
density = mass ÷ volume
mass = 960g
volume = 15³ = 15 × 15 × 15
= 3375 cm
density = 960 ÷ 3375
= 0.28 g/cm³
PLS HELP DUE SOON(Ignore that wet thingy on my paper it’s my matcha latte it go on it lol)
Answers
Answer:
well for
1. Because cytoplasm is made of a jelly like consistent
and
2. wastes product are transported by endoplasmic reticulum ,from organelles to outside cell ,so if cell size is big ,it will take more time in transportation and vice versa
Answer: Hello
Explanation: Hello
How do wetlands form?
- tributaries flow into rivers.
• Runoff travels down the side of a divide.
ɷ Water builds up in a depression left by an ice sheet.
• Groundwater comes to the surface and floods the land.
take your time :) !
Answers
Answer:
I think it's "Water builds up in a depression left by an ice sheet."
Explanation:
I think.
This is the chemical formula of Nitrogen gas.
N₂
Which of the following is NOT true of nitrogen gas?
A. It is made of two atoms.
B. It is a molecule.
C. It is an element.
D. It is a compound.
Answers
Answer:
D
Explanation:
N₂ is not a compound because it is not made up of two or more different elements - it is only made up of nitrogen atoms
Hope this helps!
In a chemical reaction, the mass of the reactants is 13.3 grams. Which of the following could represent the mass of the products?
A. 26.6 grams.
B. 13.3 grams.
C. 39.9 grams.
D. 3.3 grams.
Answers
Answer:
Hi the answer should be 13.3
Explanation:
Hope this helps! :D
glacial striations in the bedrock of south africa indicate that glaciers once moved across the african continent the presence of glaciers on the surface of africa is evidence that
Answers
The presence of glaciers on the surface of Africa is evidence that it moved outwards from a central point in southern Africa.
What is a Glacier?This is defined as the persistent body of dense ice that is constantly moving under its own weight.
Glaciers being found on African surface depicts that the movement occurred outward from Southern Africa during the period.
Read more about Glaciers here https://brainly.com/question/6666513