Answer:
water
Explanation:
the reason I think water is because water is probably the only source of nutrients which breaks down to energy
Help pls , question is in picture
Explanation:
IM PRETTY SURE IT IS D !! IF ITS WRONG IM SORRY THAT WHAT
I GOT
With all the concerns associated with non-renewable resources, why
haven't we switched over to 100% renewable energy resources? *
1)They do not produce as much energy as non-renewable resources
2)They are much too costly, and the resources are hard to find
3)They have serious environmental concerns associated with them
Answer:
2
Explanation:
I did this alderman
Calculate the volume occupied by 4.2g of nitrogen at STP?
Answer:
3.36 dm³
Explanation:
STP: Means Standard temperature and pressure.
According to Avogadro's Law, it states that the molar volume of every gas is the volume occupied by one mole of that gas at stp and is equal to 22.4 dm³
From the question,
1 mole of Nitrogen gas (N₂) occupies a volume of 22.4 dm³
But,
1 mole of nitrogen gas has a mass of 28 g
Therefore,
28 g of nitrogen gas occupies a volume of 22.4 dm³,
Then,
4.2 g will occupy a volume of X dm³
X = (22.4×4.2)/28
X = 3.36 dm³
Use the drop-down menus to match the alkanes with the correct name.
CH3CH2CH2CH2CH2CH2CH2CH3
CH3CH2CH2CH3
CH4
CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3
CH3CH3
the answers are :
octane
butane
methane
decane
ethane
Answer:
✔ octane
CH3CH2CH2CH2CH2CH2CH2CH3
✔ butane
CH3CH2CH2CH3
✔ methane
CH4
✔ decane
CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3
✔ ethane
CH3CH3
Explanation:
An alkane contains only carbon and hydrogen. The following are the accurate names of the compounds;
CH3CH2CH2CH2CH2CH2CH2CH3 - octaneCH3CH2CH2CH3 - butaneCH4 - methaneCH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 - decaneCH3CH3 - ethaneWhat is an alkane?An alkane is a compound whose only functional group is the carbon - carbon single bond. This compounds contain only carbon and hydrogen.
The correct names of the compounds are;
CH3CH2CH2CH2CH2CH2CH2CH3 - octane
CH3CH2CH2CH3 - butane
CH4 - methane
CH3CH2CH2CH2CH2CH2CH2CH2CH2CH3 - decane
CH3CH3 - ethane
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As you move from left to right across a period on the periodic table the size of an atom will
Answer:
Moving from left to right across a period, the atomic radius decreases. The nucleus of the atom gains protons moving from left to right, increasing the positive charge of the nucleus and increasing the attractive force of the nucleus upon the electrons.
Answer:the atomic radius will decrease.The nucleus of the atom will gain protons moving from left to right
Explanation:
help me get this right no links
Answer:
1 and 2
Explanation:
1. The moon blocks the sun's light from hitting the Earth. (It casts a shadow on the earth by doing so)
2. The moon moves between the Earth and the Sun. (So it blocks the sun's light)
_____ determines the type of element an atom is.
Answer:
number of protons is the correct answer. Brainliest please
What is the pH of a solution with an H+ ion concentration of
2.4E-4?
**Make sure to report your answer to the appropnate number of significant figures.
Answer: 3.6
Explanation: You use the formula pH = -log([H+]) and plug in the 2.4E-4 with a negative log. After you convert H+ to the pH, you will change the final answer of 3.62 to the correct amount of significant figures which is 3.6.
Answer:
Here is the correct answer. 3.6
Brainliest if correct!!!!!
Determine which of the following statements is true.
A. A catalyst causes equilibrium to be reached faster without changing the position of the equilibrium.
B. A catalyst causes the reaction to move more slowly so that the equilibrium position can be precisely adjusted.
C. A catalyst raises the activation energy of a reaction.
D. A catalyst speeds up the rate of the forward reaction which moves the equilibrium towards the products.
Answer:
A
Explanation:
A catalyst speeds up a reaction by lowering the required activation energy, so it's not B. Like previously stated, the catalyst lowers the activation energy required, so it's not C either. This leaves us with A. Just to double check, does a catalyst speeds up a reaction? Yes! So like it says in A, a catalyst causes the equilibrium to be reached faster. Have a nice day! :)
Catalysts speed up a chemical reaction by causing equilibrium to reach quickly while maintaining the equilibrium's position. Thus, option A is true.
What are catalysts?
A catalyst increases the reaction rate by decreasing the activation energy of the reaction. As the minimum energy required by the reactants for the reaction is decreased the rate of the formation of products increases.
During the reaction, the catalyst remains unchanged and does not undergo any chemical change. It can increase the reaction rate of both irreversible and reversible reactions.
In an equilibrium reaction, the catalyst can increase the rate of both forward and reverse reaction by reaching the reaction equilibrium at a faster rate and can move the reaction toward the products as well as a reactant.
Therefore, the catalyst causes equilibrium to be reached faster.
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What type of chemical reaction is this?
Answer:
explotion and bitly coin download
Explanation:
i record it
If a balloon full of nitrogen gas is submerged from the surface of a pool to the bottom of that same pool, what will happen as the pressure on the balloon increases?
Answer:
The volume of the balloon will decrease.
Explanation:
I had some leftover liquid nitrogen so I tried it in my pool.
when 3.18g of copper(ii)oxide was carefully heated in a stream of dry hydrogen, 2.54g of copper and 0.72g of water was formed. Determine the number of moles of hydrogen atoms which combine with one mole of oxygen atoms. Show your working.
Answer:
hsbdgjvejsnshns gzjs svshs
Help, please I don't understand what I have to do
Answer:
Is there a picture To go with this?
Explanation:
Which compound is an exception to the octet rule?
H2O
OHCI
OCCIA
CIF3
Answer:
CIF3
Explanation:
Edge completion
Metal M has only one oxidation state and forms a compound with the formula MHCO3. Which formula is correct? A.MNO3 b.MNH4 c.M(NO3)2 d.MPO4
Answer:
The compound with the correct formula is;
A. MNO₃
Explanation:
The number of oxidation states in the metal, M = One oxidation state
The formula of the compound formed by the metal, M = MHCO₃
We note that the ion HCO₃⁻, known as hydrogen carbonate has an oxidation number of -1
Similarly nitrate, NO₃⁻ has an oxidation number of -1, therefore, the metal M can form similar compound formed with HCO₃⁻ with nitrate, and we have;
The possible compounds formed by the metal 'M' includes MHCO₃ and MNO₃.
Give two examples of an ionic compound. Chemical name and chemical structure.
3. A 4.0 g sample of iron was heated from 0°C to 20.°C. It absorbed 35.2 J of energy as heat. What is the specific
heat of this piece of iron?
a. 2816 J/(g•°C)
c. 2.27 J/g
b. 2.27 J/(g°C)
d. 0.44 J/(g.°C)
i know that the answer is D. but I need an explanation please ! :)
Answer:
The answer is d
Explanation:
describe how the intestines, liver, stomach, and pancreas all work together.
extra detail please and no links.
Answer:
Glands in your stomach lining make stomach acid and enzymes that break down food. Muscles of your stomach mix the food with these digestive juices. Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins, along with your liver that makes a digestive juice called bile, which helps digest fats and some vitamins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Bacteria in your small intestine make some of the enzymes you need to digest carbohydrates. It also absorbs water with other nutrients. Bacteria in your large intestine help break down remaining nutrients and make vitamin K NIH external link. Waste products of digestion, including parts of food that are still too large, become stool.
Some extra info, but the main ones are there for you :)
Explanation:
Mouth. The digestive process starts in your mouth when you chew. Your salivary glands make saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach. Saliva also has an enzyme that begins to break down starches in your food.
Esophagus. After you swallow, peristalsis pushes the food down your esophagus into your stomach.
Stomach. Glands in your stomach lining make stomach acid and enzymes that break down food. Muscles of your stomach mix the food with these digestive juices.
Pancreas. Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts.
Liver. Your liver makes a digestive juice called bile that helps digest fats and some vitamins. Bile ducts carry bile from your liver to your gallbladder for storage, or to the small intestine for use.
Gallbladder. Your gallbladder stores bile between meals. When you eat, your gallbladder squeezes bile through the bile ducts into your small intestine.
Small intestine. Your small intestine makes digestive juice, which mixes with bile and pancreatic juice to complete the breakdown of proteins, carbohydrates, and fats. Bacteria in your small intestine make some of the enzymes you need to digest carbohydrates. Your small intestine moves water from your bloodstream into your GI tract to help break down food. Your small intestine also absorbs water with other nutrients.
Large intestine. In your large intestine, more water moves from your GI tract into your bloodstream. Bacteria in your large intestine help break down remaining nutrients and make vitamin K NIH external link. Waste products of digestion, including parts of food that are still too large, become stool.
Glands in your stomach lining make stomach acid and enzymes that break down food. Muscles of your stomach mix the food with these digestive juices. Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins, along with your liver that makes a digestive juice called bile, which helps digest fats and some vitamins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Bacteria in your small intestine make some of the enzymes you need to digest carbohydrates. It also absorbs water with other nutrients. Bacteria in your large intestine help break down remaining nutrients and make vitamin K NIH external link. Waste products of digestion, including parts of food that are still too large, become stool.
Hope this helps, have a great day/night! :}
Which of the following contains the most atoms?
2 moles of silver.
1 mole of carbon.
2.5 moles of oxygen.
1.5 moles of iron.
An isotope, cesium-137, has a half-life of 30 years. Starting with 40 grams, how much is left in 60 years?
You can use a very simple formula for first order decay...
Fraction Remaining (FR) = 0.5n where n is the number of half lives that have elapsed.
In the current problem we want to find the FR, and we know n = 2 half lives elapsed (60 yr/30yr = 2)
FR = 0.52 = 0.25
Since we started with 5.0 g, and we have 0.25 (1/4) left, that would be 5.0 g x 0.25 = 1.25 g
Which factors determine the length of a bond between two elements?
Answer:
The length of the bond is determined by the number of bonded electrons (the bond order). The higher the bond order, the stronger the pull between the two atoms and the shorter the bond length. Generally, the length of the bond between two atoms is approximately the sum of the covalent radii of the two atoms.
I have 2.000 moles of potassium (K). How many grams of potassium chloride (KCl) can I make?
Answer:
You can make 149.1g of KCl
Explanation:
1 mole of potassium chloride, KCl, contains 1 mole of potassium, K. That means, with 2.000 moles of K we can make 2.000 moles of KCl. To solve this question we must convert these moles of KCl to mass in grams using its molar mass (Molar mass KCl = 74.5513g/mol):
Mass KCl:
2.000 moles KCl * (74.5513g / mol) =
You can make 149.1g of KClWhat is the pH of a solution with an OH- ion concentration of
1.25E-4?
PLEASE HELP ASAAPPOPPP
Answer:
10.1 M
Explanation:
Applying,
pH = -log(H⁺).................... Equation 1
But,
[H⁺][OH⁻] = 1×10⁻¹⁴................ Equation 2
Where [H⁺] = Hydrogen ion concentration, [OH⁻] = Hydroxyl ion concentration.
From the question,
Given: [OH⁻] = 1.25×10⁻⁴ M
Substitute into equation 2
[H⁺][1.25×10⁻⁴] = 1×10⁻¹⁴
[H⁺] = 1×10⁻¹⁴/1.25×10⁻⁴
[H⁺] = 0.8×10⁻¹⁰ M
[H⁺] = 8×10⁻¹¹ M
Also, Substitute the value of [H⁺] into equation 1
pH = -log[8×10⁻¹¹]
pH = 10.1 M
True or False: The moon's gravity affects the oceans nearest the moon because the moon's gravity pulls water into a tidal bulge.
Answer: The moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the moon and the side farthest from the moon. These bulges of water are high tides
Explanation:
The moon's gravity affects the oceans nearest the moon because the moon's gravity pulls water into a tidal bulge is a true statement.
What is tidal force?The tidal force is the result of the moon's gravitational pull.
The tidal force causes Earth—and its water—to bulge out on its closest and furthest sides from the moon. High tides cause these water bulges.
Thus, the statement is correct.
Learn more about tidal effect
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someone, please help me find the missing planets
Answer:
planet A: Saturn
planet B: Mars
planet C: Venus
planet D: Uranus
Explanation:
Answer:
A is Saturn
B is Mars
C is Venus
D is Neptune
Explanation: Saturn is known for its rings and it's the 6th planet on the Solar System. Mars is indeed quite red and it is in the inner comet belt
C is Venus because a day is longer than a year on Venus and D is Neptune because it's a blue and green gas giant.
Which of the following is not true?
a) Staic cling or electrostatic attraction is never useful
b) lighting bolts are giant sparks caused by the build up of static charge
C) static cling cause plastic wrap to stick to your lunch
D) people who work on computer parts must reduce net the net static charges on objects to avoid damging sensetive circuits
E) static charges must be reduced in many situations to protect people and equitment
Answer: C i believe
Explanation: Common sense
Unsweetened chocolate has a very bitter taste. What does this taste indicate about
some of the compounds in unsweetened chocolate?
A)They are acidic.
B)They are salts.
C)They are basic
D)They are neutral.
Answer:
C. They are basic
Find the force of an object that has an acceleration of 6.7 m/s2 and a mass of 12 kg.
What's an example of an ionic bond and why is it ionic
Ionic bonding in sodium chloride. An atom of sodium (Na) donates one of its electrons to an atom of chlorine (Cl) in a chemical reaction, and the resulting positive ion (Na+) and negative ion (Cl−) form a stable ionic compound (sodium chloride; common table salt) based on this ionic bond.
Hope it helps
Can u mark me as......
But its OK if u didnt
how many moles of iron are in 4.8 x 10^24 atoms of iron
Answer:
7.97 moles
Explanation:
The number of moles (n) of iron (Fe) in this question can be calculated by dividing its number of atoms by Avogadro's number (6.02 × 10²³ atoms).
That is;
n = number of molecule ÷ Avogadro's number
According to this question, the number of atoms of Fe is given as 4.8 x 10²⁴ atoms.
Hence,
n = 4.8 x 10²⁴ ÷ 6.02 × 10²³
n = 4.8/6.02 × 10^(24-23)
n = 0.797 × 10¹
n = 7.97 moles