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How do scientists plan for missing bones?
Answer:
scientist never ignore the missing -parts of body
Explanation:
they take the missing bones as an opportunity to look into them as practical for pre medical student ,they are very costly sealed
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
HELP ME THE WHOLE PAGE !!!! Someone help please
Answer:
In the image below
Explanation:
Hope this helps you :)
How do acid, base, and salt differ?
A material being examined is the same throughout. The material contains carbon and oxygen, chemically combined. What type of material is it?
Answer:
compound
Explanation:
A compound is a substance that consists of atoms of two or more various elements such that the atoms are chemically joined together.
For example, water is a compound made up of hydrogen and oxygen.
A material being examined is the same throughout such that the material contains carbon and oxygen that are chemically combined. This material is compound.
Which product is made using bacteria?
Answer:
C would be the answer
Explanation:
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
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.
Construct an explanation using Newton's Laws of Motion to describe the effects of balanced and unbalanced forces
on the motion of an object.
Answer:
newton's 3 laws state:
- an object in motion stays in motion (unless an external force acts on it)
- every action has an opposite but equal reaction
- force= mass x acceleration
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'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.
Please answer both 7 and 8
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
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..
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 makatulongSome 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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The population of Yuba City, California is 61,360 people. What is 61,360 rounded to the nearest thousand? *
Answer:
61,000
Explanation:
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]
someone help please?
What is the proper attitude with which you should approach a laboratory experience
the awnser is : b serious
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 would take light the longest to travel across?
Group of answer choices
galaxy
universe
nebula
star
Answer:
Galaxy ?
Explanation:
Plants 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 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
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
The temperature inside my refrigerator is about 4° Celsius. If I place a
balloon in my fridge that initially has a temperature of 22° C and a volume
of 0.5 liters, what will be the volume of the balloon when it is fully cooled
by my refrigerator?
Answer:
The volume will be 0.47 L
The answer is the volume of the balloon when it is fully cooled by the refrigerator is 0.47 L
What is Charles Law ?If the pressure remains constant , Volume is directly proportional to temperature
[tex]\dfrac{V^{1} }{T^{1} } = \dfrac{V }{T }[/tex]
The data given in the question ,
When Solving Gas Law Problems , we need to convert degree Celsius to Kelvin.
kelvin = degree Celsius + 273.15
T2 (final temperature) in Kelvin = 4 + 273.15 = 277.15K
T1 (initial temperature) in Kelvin = 22 + 273.15 = 295.15 K
V1 (initital volume) = 0.5 L
V2 (final volume) = unknown ?
[tex]\dfrac{V^{1} }{277.15 } = \dfrac{0.5 }{295.15}\\\\V^{1} \;\;\; \;\;\;= \dfrac{0.5\times 277.15}{295.1 5} \\\\V^{1} \;\;\; \;\;\;= \;0.47\; litres[/tex]
Thus , the volume of the balloon when it is fully cooled by the refrigerator is 0.47 litres.
To know more about Charles Law
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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:
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^^