Answer:
92gm
Explanation:
Atomic mass of Mg=24g=1 mole of Mg
∴ 24g =1 mole of Mg contain 6.022×10^23 atom
∴ 6gm contains 246.022×1023×6
=4×6.022×10^23 atoms
Now according to question, there are 6.022×1023 atoms of Na
23gm of Na contains 6.022×10^23 atoms
∴6.022×4×10^23 atoms of Na weighs 23×6.022×10^23×4/6.022×10^23⇒92gm
Which of the three sub-atomic particles is the lightest?
a The proton
b The neutron
c The electron
d orbital
Answer:
The electron
Explanation:
The electron will be the lightest subatomic particle.
Answer:
The electron
Explanation:
Electron, lightest stable subatomic particle known. It carries a negative charge, which is considered the basic unit of electric charge. The rest mass of the electron is 9.10938356 × 10 −31 kg, which is only 1/1,836 the mass of a proton.
A graduated cylinder is filled with 54.32 cm3 of water. An irregular solid made of iron is carefully placed into the graduated cylinder. The new volume recorded on the graduated cylinder is 57.65 cm3. The density of iron is known to be 7.874 g/cm³. What is the mass in grams of the irregular solid made of iron?
Answer:
The answer is 26.22 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
density of iron = 7.874 g/cm³
volume = final volume of water - initial volume of water
volume = 57.65 - 54.32 = 3.33 mL
We have
mass = 7.874 × 3.33 = 26.22042
We have the final answer as
26.22 gHope this helps you
NEED HELP ASAP-WILL GIVE 15 POINTS
Which sentence below accurately demonstrates the process of osmosis?
A. Leaving a raw egg in water for a period of time will cause the egg to swell in size.
B. A plastic bag filled with salt water is left in a larger container of water over night and all of the water in the large container becomes salty.
C. A drop of food coloring in water will slowly disperse throughout the water molecules and eventually completely change the water's color.
D. When a bottle of perfume is opened, the smell is stronger at first and then it fades.
Answer:
a
Explanation:
its a
describe a procedure to remove the water from the mixture that passes through the filter and collects in the beaker.
Answer:
The procedure is Filtration
Explanation:
Filtration is a process that is use to separate insoluble solid from liquid for example Salt and water.
This process uses filter paper which is placed inside a funnel and then placed inside a beaker.
The mixture of sand and water is poured into the the filter paper and water then drains out down to the funnel and the beaker.
The solid part remain at the filter paper and it is called the residue and the water is the filtrate.
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Travis is warming up before basketball practice. Which of these activities would provide the best dynamic stretch to prepare him for sprinting?
Forward bends
Arm rotations
Neck extensions
Leg swings
Answer:
Leg swings sounds good but not to sure
Explanation:
I mean in order to play basketball gotta warm up your legs
Answer: Leg swings
Explanation: Leg swings would be best for preparing to sprint because you will have to move you legs very quickly, and leg swings would be a good warm up without tiring yourself out.
what are the 3 things needed in photosynthesis
Answer:
Carbon dioxide, water and light are all needed for photosynthesis to take place. Photosynthesis happens in the leaves of a plant.
Explanation:
What are 2 mixtures
Air
Orange juice
Silver
Sodium chloride
Water
Which of the following is NOT a homogeneous mixture? *
koolaid
soda
tea
water
Answer:
water
Explanation:
Because it does not have more than one component.
how many significant figures in 890
Answer:
890 has 2 significant figures
Explanation:
Which pair is classified as pure substances? a. compounds and solutionsc. elements and mixtures b. mixtures and solutionsd. compounds and elements
Answer:
d. compounds and elements
Explanation:
a pure substance is when something is made up of one type of thing, whether it be elements, where they are made up of one type of atom or a compound, where its atoms are chemically bonded and cannot be broken down by physical means
what is the reason of the gas pressure.
Answer:
The rapid motion and collisions of molecules with the walls of the container causes pressure (force on a unit area). Pressure is proportional to the number of molecular collisions and the force of the collisions in a particular area. The more collisions of gas molecules with the walls, the higher the pressure
wich organelle is found in photosynthesis organisims and caprures energy from the sun
Plastid is the organelle that can the substance. chlorophyll that performs photosynthesis
Explain how balancing chemical equations relates to the law of conservation of matter.
Answer:
In every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Showing that Mass cannot be created nor destroyed in a chemical reaction
Explanation:
Without atmospheric pressure humans could not do what?
Answer:
Breathe. Breathing is the number one thing every human does, and their bodies need it. Think about going in a pool in 6 feet. You realize that its kinda hard to breathe and it feels like something is holding your chest down really hard. Water pressure and air pressure can affect the breathing habits of a human and can also cause suffocation to the lungs.
Explanation:
please give brainlyest
Convert each of the following lengths to the units requested.
a. 17.3 m to centimeters
b. 2.56 m to kilometers
567 dm to meters
5.13 m to millimeters
Answer:
1730 cm
0.00256 km
5130 mm
A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock by placing the rock in a graduated cylinder with 50 mL of water and watched the water rise to 72.7 mL. The student determined the mass is 39.943 g through the use of a triple beam balance. What is the density of the rock?
Answer:
1.76 g/mL
Explanation:
You need to find the volume. You can do this by subtracting the volume of the water and the rock by the volume of the water.
72.7 mL - 50 mL = 22.7 mL
Now that you have volume, divide the mass by the volume to find the density.
39.943 g/22.7 mL = 1.76 g/mL
What is Ammonium bisulfate as a chemical formula?
Answer:
Ammonium bisulfate/Formula
(NH4)HSO4
Reason to answer:
Mark me brainliest
PLEASE HELP!! :((((((((((((((((((((((((
Where is the word problems? Like the problems that you have to put it in.
Explanation:
How does water move from the hydrosphere to the atmosphere?
O A. Precipitation
B. Percolation
O C. Evaporation
D. Condensation
what is the density of the football
Write a sentence using the following word: beech.
I was so happy when I saw the beech tree,there was so much shade
Answer:
The chief trees are beech, oak and conifers. A large area is under forests, the oak, beech, fir, birch and hornbeam being the principal trees.
Explanation:
What % of all the atoms in the universe are hydrogen
Answer:
Over ninety percent of all the atoms in the Universe are hydrogen atoms.
Explanation:
Over ninety percent of all the atoms in the Universe are hydrogen atoms. By mass, hydrogen makes up about 75% of all matter in the Universe. Hydrogen atoms are also the smallest and lightest of all the atoms with only one electron and one proton in a common single hydrogen atom (called protium).
Convert the following: 100 hg(hectograms) to g(grams)
a. 10,000 g
b. 10 g
c. 1 g
d. 100 g
Answer:
A
Explanation:
10,000g
just multiply the amount of hectograms by 100 to get grams
1. The answer to the research question is the...
A. Claim
B. Evidence
C. Reasoning
2.The scientific data used to prove your point is the...
A. Claim
B. Evidence
C. Reasoning
Answer:
1. A claim
2. B evidence
I will give 25 points and make them brainlest if they solve this.
A carbon atom that is a part of your body could very well have been part of a dinosaur millions of years ago. What BEST explains this?
A The carbon atoms that are found in current living things are developed when the organism is produced.
B Carbon atoms found in current living things are the same carbon atoms that have always been a part of living things, they are just recycled.
C This could not be explained because carbon found in our bodies could not have a part of any previous organism.
D Carbon atoms are genetically passed through the evolution of organism.
Answer:
B - Carbon atoms found in current living things are the same carbon atoms that have always been a part of living things, they are just recycled.
Carbon atoms found in current living things are the same carbon atoms that have always been a part of living things, they are just recycled. Hence, option B is correct.
What is an atom?An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons.
Dinosaurs were the most dominating organism in that time period.
The dinosaurs and the present-day human beings have certain similar characteristics. Some of them are as follows-
They both have control over their body movement.They have a well-functioning brain.They are sharp and active.The dinosaurs were dominant during the Jurassic period and the humans are dominating at the present on earth.Hence, option B is correct.
Learn more about an atom here:
https://brainly.com/question/1566330
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How many grams are in 0.500 mol of Na (molar mass of Na = 22.99 g/mol)?
Answer:
11.495 grams
Explanation:
What is the most likely reason that nonmetals are electrical insulators?
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Since valence shells in nonmetal atoms are almost full, the atoms attract electrons and hold them tightly to fill their valence shells.
Since all nonmetals have valence shells that are full, they hold electrons tightly to avoid changing.
Since all nonmetals have valence shells that are completely empty, they do not attract or release any electrons.
Answer:
Since valence shells are mostly empty in nonmetal atoms, the atoms attract and hold any electrons they can in order to fill their valence shells.
Answer:
a
Explanation:
carbon has 4 electrons in the outer shell .how does carbon attain stable electronic configuration!if ur answer it 21 points + i wil mark as brainlist so dont miss it
Answer:
through covalent bond
A Solute is the part of the mixture that is
A. dissolved
B.used to dissolve a substance
5. (4 points) “She’s singing higher than he is” is a statement related to:___
A. Volume
B. Pitch
Answer:
It's pitch
Explanation:
I play violin and it would be the same. Pitch is how high a note is. A B in treble clef is higher than a G