Answer:
F has the smallest
Explanation:
The trend is that atomic radius increases as you move down a group
Hello, your answer is down below!
A. F
I hope this helps mark brainlist if im correct!
How do acid, base, and salt differ?
2. How old are the oldest fossils? Oldest rocks?During what period were these found?
IT
Answer:
Fossils: 3.5 billion. Rocks: 4.28 billion
they were found during Haden Eon
Explanation:
What is isostatic rebound in simple words?
Explanation:
Isostatic rebound (also called continental rebound, post-glacial rebound or isostatic adjustment) is the rise of land masses that were depressed by the huge weight of ice sheets..
how do substances change into different substances during chemical reactions
Answer:
Chemical reaction are irreversible. Some of the example of chemical reaction are cooking, rusting, and burning. During a chemical reaction, the composition of substances changes and the particles rearrange to form a new substance. The new substance formed after chemical reaction of substance has different physical and chemical properties.
When a chemical reaction occur, the atoms or molecules of the substances change its physical and chemical properties such as while cooking of vegetable, the molecules of vegetable undergo changes in their properties and form a new substance which is different from the earlier.
What is the proper attitude with which you should approach a laboratory experience
the awnser is : b serious
How do you find the number of neutrons from a nuclide symbol?
Subtract the atomic number from the mass number.
Add the atomic number and the mass number.
Multiply the atomic number and the mass number.
Divide the mass number by the atomic number.
subtract the atomic number from the mass number
hope that helps^^
Atomic number of Sodium?
Answer:
11
Explanation:
Answer:
Atomic number of sodium is 11.
Sodium is a chemical element with the symbol Na and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 of the periodic table. Its only stable isotope is ²³Na. The free metal does not occur in nature, and must be prepared from compounds.
What is biogeochemistry? Group of answer choices
Explanation:
: of or relating to the partitioning and cycling of chemical elements and compound's between the living and nonliving part's of an ecosystem.
Elements that do not have full outer electron shells will donate, share, or take from other atoms. Choose the items that have the correct binary ionic formula. (brainliest)
Answer:
Ok...
Answer: YTH/JYG
Explanation:
AI+ZN+H=YTH
Answer:Potassium and sulfur form KS2
Sodium and calcium form Na2Ca
Beryllium and nitrogen form Be3N2
Explanation:
i took the quiz
0.265g of an organic compound produced on evaporation 102cm cube of vapour at 373K and 775mmHg. Percentage composition of the constituent elements are 92.24% C and 7.76% H. Find the molecular mass and molecular formula of the composition.
Answer:
No results found for 0.265g of an organic compound produced on evaporation 102cm cube of vapour at 373K and 775mmHg. Percentage composition of the constituent elements are 92.24% C and 7.76% H. Find the molecular mass and molecular formula of the composition..
Results for 0.265g of an organic compound produced on evaporation 102cm cube of vapour at 373K and 775mmHg Percentage composition of the constituent elements are 92.24 C and 7.76 H Find the molecular mass and molecular formula of the composition
Answer:
Using PV=nRT
since [tex]n. \: no \: of \: moles= \frac{mass}{molar \: mass} [/tex]PV= nRT
P=775mmhg/760mmhg
P=1.01atm
so,n=PV/RT
n= (1.01*0.102)/(0.0821*373)
n= 0.00339mole
n =mass/ molecular mass
molecular mass =0.265/0.00339
molecular mass= 78.17
empirical formular = C. H
C= 92.24. 92.24/12= 7.688
H= 7.76. 7.76/1=7.76
therefore Empirical formula is CH
(CH)n=78.16
(12+1)n=78.14
n=78.14/13
n= 6.01
therefore, molecular formula is
C6H6
how much force is required to accelerate an 1,800 kg truck at 3 m/s/s
Answer:
3 ÷1,800
= 600 N
Thus the force needed is 600N
How is Earth’s outer layer different from a cracked hard-boiled egg?
I need help ASAP please
Answer:
water cycle
air pressure
Explanation:
Answer:
Should be water cycle, solar radiation, and air pressure!
Some farmers of vegetables and fruits from flowering plants pay beekeepers to bring their beehives to their land each year. Why is this?
1. Flowering plants rely on pollinators to survive.
2. Flowering plants depend on bees for self-pollination.
3. Bees help protect their crops.
4. Bees eat the sweet nectar of the fruits that grow.
Answer:
option 2nd is correct answer of this question
Some farmers of vegetables and fruits from flowering plants pay beekeepers to bring their beehives to their land each year because flowering plants depend on bees for self-pollination. Therefore, option 2 is correct.
What is self pollination ?Self pollination is the transfer of pollen grains from the anther of a flower to the stigma of the same flower in the same plant or to a different plant that is genetically similar.
Many crops, but not all, self-pollinate. Beans, broccoli, cabbage, carrots, cauliflower, corn, kohlrabi, onions, and peppers are examples. Apples, cherries, peaches, and pears are among the fruit trees that self-pollinate.
Because flowering plants rely on bees for self-pollination, some farmers of vegetables and fruits from flowering plants pay beekeepers to bring their beehives to their land each year.
Thus, option 2 is correct.
To learn more about the self pollination, follow the link;
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Which of these statements is false?
A.
Atoms of different elements can combine to form compounds.
B.
Oxygen and copper are examples of elements.
C.
Atoms of different elements are the same.
D.
Elements are pure substances.
Answer:
Answer is C atoms of different elements are the same
Why does going up the slope take more effort than going down?
Answer:
going up the slope takes more effort because you are using more of your energy to go up something than going down because of gravity. Gravity wants to pull things down so if you are trying to go up there is more weight than going down.
Zinc has a density of 7.10 g/cm3. If a cylinder of zinc weighing 46.77 g is completely immersed in a graduated cylinder that originally contains 33.33 mL of water, what will be the new water level? PLEASE HELP!!!! I NEED TO TURN THIS IN SOON!
The Density of a substance is simply defined as the mass of the subtance per unit volume of the substance i.e
Density = mass /volume
To solve the question given above, we'll begin by calculating the volume of the zinc. This can be obtained as follow:
Density of Zinc = 7.10 g/cm³
Mass of Zinc = 46.77 g
Volume of Zinc =?Density = mass /volume
7.10 = 46.77 / Volume
Cross multiply
7.10 × Volume = 46.77
Divide both side by 7.10
Volume = 46.77 / 7.10
Volume of Zinc = 6.59 cm³Finally, we shall determine the new volume of the water. This can be obtained as follow:
Volume of Zinc = 6.59 cm³ = 6.59 mL
Volume of water = 33.33 mL
New volume of water =?New volume of water = (Volume of Zinc) + (Volume of water)
New volume of water = 6.59 + 33.33
New volume of water = 39.92 mLTherefore, the new volume of water is 39.92 mL
Learn more: https://brainly.com/question/24472494
Do foods change the pH of the body ? Explain your answer
Answer:
The alkaline diet claims to help your body maintain its blood pH level. In fact, nothing you eat is going to substantially change the pH of your blood
Answer:
there's no way the foods you consume can alter the pH levels of your blood. The pH of the body is a tightly regulated.
Explanation:
hope this helps if im wrong sorry
How many moles are in 12.15 g of Mg?
(2 decimal places)
[tex]12.15 \: g \times \frac{1 \: mol}{24.305 \: g} = 0.4998971405 \: mol[/tex]
[tex] = 0.50 \: mol[/tex]
What are valance electrons used for?
Answer:
In chemistry and physics, a valence electron is an outer shell electron that is associated with an atom, and that can participate in the formation of a chemical bond if the outer shell is not closed; in a single covalent bond, both atoms in the bond contribute one valence electron in order to form a shared pair.
What would take light the longest to travel across?
Group of answer choices
galaxy
universe
nebula
star
Answer:
Galaxy ?
Explanation:
HELP ME THE WHOLE PAGE !!!! Someone help please
Answer:
In the image below
Explanation:
Hope this helps you :)
Please answer both 7 and 8
In your own words, define a fire.
What is a fire?
Answer:
Fire is something that's red and sorta orange is hot and can burn you but fire can be good and bad at some points for example fire can be used as a campfire,fireplace at home,and lighting candles. Fire is also very dangerous tho ,you can burn yourself if your not careful it can light your house on fire and that wouldn't be very safe. In simple words i would say fire is something that can have advantages and disadvantages.
Ahhh hope thats alright im on online classes but i wanted to help!!
Answer:
This would depend on the intensity or the size of a fire.
Explanation:
For instance, a small fire could be described as: kindled, flickering, dancing (in the case of a candle flame), smoldering, or crackling.
A medium size fire, such as a camp fire or a fireplace could be described as: crackling, blazing, burning, or roaring.
While a large or very intense fire (such as a forest fire or a house fire) could be described as: roaring, blazing, burning out of control, consuming, raging, or destroying.
If you were more looking for synonyms of ‘fire’, here are a few of my favorites: flame, blaze, incinerate, immolation, and inferno. (Edited to add a few I remembered: pyre, conflagration, and scorching.)
What do the arrows in the diagram tell you about the molecule?
A. Boron is more electronegative than Fluorine.
B. The molecule is polar.
C. The bonds are nonpolar.
D. Fluorine is more electronegative than Boron.
Answer:
A
Explanation:
#keep learning hope makatulongPlants carry out photosynthesis to make sugar from carbon dioxide and water.
True or false?
Answer:
la re spuesta en verdadero
Answer:
True
Explanation:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.
What is the solute and solvent in a solution of salt water?
Select one:
a.Water is the solvent; Salt is the solute
b.Water is the solvent; Salt is the solvent
c.Water is the solute; Salt is the solute
d.Water is the solute; Salt is the solvent
Answer:
A
Explanation:
solute- thing being disolved
solvent- thing doing the disolving
so water is a solvent and salt is solute.
which is A
if my answer helps please mark as brainliest.
In the solution of salt and water, Water is the solvent; Salt is the solute. That is option A.
What is a solute and a solvent?A solute is defined as the part of a solution that is being dissolved by the solvent. A typical example of solute is base and salts.
A solvent is defined as the dissolving part of a solution which is usually liquid in form. A typical example is water.
Therefore, the solute and solvent of a solution would be salt and water respectively. That is option A.
Learn more about solvent here:
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what's the FM of chlorine
Answer:
The system can operate on a set level of parts per million (ppm) chlorine, where the set level is automatically maintained.
A student has a balloon with a volume of 2.5 liters at a temperature of 20°C. As the
day warms up to 40°C the student notices their balloon changing size. What is the
new volume of the student's balloon?
approximately 3 liter
because when we round of 2.67it will be 3
Energy is absorbed when a material ________ and is released when a material _______.
A. evaporates, melts
B. freezes, melts
C. melts, freezes
D. freezes, condenses