Answer:
5.8125*10^-3
the moles in Fe2O3 are 0.93/(56*2 + 16*3) = 5.8125*10^-3
Zora wants to dissolve a solute in a solvent quickly. Which best describes what she should do?
decrease the pressure
decrease the surface area
shake it repeatedly
place in a refrigerator
Answer:
C shake it repeatedly
Explanation:
i think thats the answer if not sorry hope it helps you.
Answer:
C.
Explanation:
LINKING IN
TECHNICAL OBJECTS
1 a) What is linking?
Answer:
A link is a fastening unit that attaches two parts of an object together
Different types of links have different characteristics
Answer:
Linking is the process of combining all the component object files. The linker determines where the code will reside in memory and how control will transfer between the components.
An ionic bond involves two elements...
Answer:
a metal and a nonmetal element
Explanation:
how many grams are in 7.4 moles of HgS?
Answer: 1721.6 grams
Explanation:
True or False: Photosynthesis can happen anytime, regardless of the amount of reactants present or the presence of sunlight.
Answer:
This is false
Explanation:
Im in bio and we just learned this lol
Photosynthesis
+ carbon sunlight
dioxide
+
oxygen
sugar +
water +
Cellular
respiration
+ energy
Which of the three phases of matter solid liquid or gas has particles that are fast moving and independent of each other??? Also this is science class work
The Answer is Solid
Explanation:
the particles in a solid are vibrating very fast and are packed together so they're independent one each other.
Limonene is an oil from oranges and lemons. Click on all the carbon
atoms its structures that have a trigonal planar molecular geometry.
Answer:
See explanation
Explanation:
Limonene is an oil from oranges and lemons. Its structure has been shown in the image attached to this answer.
There are two different groups of carbon atoms in limonene. One group of carbon atoms are sp2 hybridized while the other group are sp3 hybridized. The group of carbon atoms that are sp2 hybridized have a trigonal planar geometry and have been accurately labeled in the image attached while the carbon atoms that are sp3 hybridized were also labelled and have a tetrahedral geometry.
Hence in limonene, there are trigonal planar and tetrahedral carbon atoms.
Single displacement (replacement)
Explanation:
Single displacement (replacement) is kind of reaction in which 1 atom of reactants only change in product.
How do the different processes of a rock cycle change a rock? Which processes will form an igneous, sedimentary, and metamorphic rock
Question 8
The temperature of a gas is 345K. What is this in degrees Celsius?
0 345°C
O 1.26°C
O 72°C
O 618°C
< Previous
How did boyle's change the way scientists make discoveries
Robert Boyle established chemistry as a discipline based on measurement, freeing it from the mysticism and alchemy that had plagued it. He introduced the concept of chemical analysis and defined elements, compounds, and mixes.
Boyle used a vacuum chamber to alter the gas's pressure in order to find the link between pressure and volume in a gas, which is now known as Boyle's law. In order to demonstrate that pressure and volume are inversely related to one another, he made detailed observations and carried out a number of experiments.
He developed a new vacuum pump and performed experiments in vacuum, they found that neither sound nor flame could exist there.
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Which of the following dilutions would produce 2.0M acid from 3.0M acid
A) 3.0mL acid and 2.0mL water
B) 2.0mL acid and 1.0mL water
C) 2.0mL acid and 3.0mL water
D) 1.0mL acid and 2.0mL water
Answer:
that's a little bit difficult question
Explanation:
sorry !
what is photosysthies
Answer:
Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. The chemical energy is stored in the form of sugars, which are created from water and carbon dioxide.
Explanation:
Answer:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Explanation:
During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. Photosynthesis provides us with most of the oxygen we need in order to breathe. We, in turn, exhale the carbon dioxide needed by plants. Plants are also crucial to human life because we rely on them as a source of food for ourselves and for the animals that we eat.
I hope this helps all of you!
Abel was running a fever of 107 degrees Fahrenheit, what was her temperature in degrees
Celsius?
Explanation:
we know the formula to convert farenheit to Celsius
=(F-32)(5/9)
=(107-32)(5/9)
(5/9)=375/9= 41.6 degrees Celsius
What is the chemical formula for Tetrasulfur pentoxide?
Answer:
S 4 O 5
Explanation:
the 4 and 5 are little
a. Identify the type of reaction shown:
Li + CaCl2 ---> LiCl + Ca
Answer:
single-replacement reactions
Explanation:
A single-replacement reaction is defined as a chemical reaction in which one strong element replace the other weak element.
The given chemical equation Li + CaCl2 ---> LiCl + Ca is an example of single-replacement reactions in which Lithium (Li) is stronger than Calcium (Ca) and replaces calcium to form bond with Chloride.
Hence, the correct answer is "single-replacement reactions".
A student did an investigation to determine the effect the amount of air would have on plant growth. She planted identical
plants in 4 separate closed containers with different volumes of air. She measured the height of the plants after they had
grown for 3 weeks.
What is the dependent (responding) variable in her investigation?
Answer:
Explanation:
The responding variable always is measured against the variable that you have control over.
In this case, you have control over the volume of air.
The responding variable is the amount the plant has grown. This would be a good long term experiment to try for a science fair or just because you might be interested. It's a good simple idea.
The parts of the Earth that contain living organisms
Answer:
Biosphere
The Biosphere --contains all the planet's living things. This sphere includes all of the microorganisms, plants, and animals of Earth. Within the biosphere, living things form ecological communities based on the physical surroundings of an area.
Explanation:
Answer:
Biosphere
Explanation:The Biosphere --contains all the planet's living things. This sphere includes all of the microorganisms, plants, and animals of Earth. Within the biosphere, living things form ecological communities based on the physical surroundings of an area. hope this helps (:
The diagram below shows two organelles—a chloroplast and a mitochondrion.
How are these organelles similar?
A.
They are both found in animal cells.
B.
They are both designed to create food for the cell.
C.
They both have an inner membrane and an outer membrane.
D.
all of these
Answer:
I think the answer is C because it's TRUE they both do
Explanation:
Sorry I had to do some thinking on that one lol but yeah the first person who answered I think is right
The nuclear equation below represents the alpha decay of 222/86 Rn --> 4/2 He + X
What is the mass number of the element represented by X?
Answer: The mass number of X is 218.
Explanation:
Alpha decay : When a larger nuclei decays into smaller nuclei by releasing alpha particle. In this process, the mass number and atomic number is reduced by 4 and 2 units respectively.
General representation of an element is given as: [tex]_Z^A\textrm{X}[/tex]
where,
Z represents Atomic number
A represents Mass number
X represents the symbol of an element
General representation of alpha decay :
[tex]_Z^A\textrm{X}\rightarrow _{Z-2}^{A-4}Y+_2^4\alpha[/tex]
[tex]_{86}^{222}\textrm{Rn}\rightarrow _{84}^{218}\textrm{Po}+_2^4\textrm{He}[/tex]
Draw the Lewis structure for AB4
Does a rumor spread faster in a gym where all of
the students can move around freely, or in a classroom where students are
confined to desks? Develop an analogy for the difference in conductivity
between metals and ionic solids.
A rumor spread faster in a classroom where students are confined to desks than in a gym where all of the students can move around freely.
The same applies to conductivity between metals and ionic solids because metals have more close particles.
What is conductivity?Conductivity is the process by which a material is able to transfer electric charge or heat from one point to another without the actual movement of the particles of the substance.
The conductivity of substances varies from one substance to another.
The conductivity of solids is greater than the conductivity of that of other substances.
The conductivity of substances increases with a decrease in the distance between the particles of the substance.
Thus solids that have the closest particles have the highest conductivity.
Liquids have medium conductivity.
Gases have the least conductivity because they have the most spaced-out particles.
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Directions Solve the given problem below by showing the following:
I ELECTRONIC CONFIGURATION
2. LED structure
GIVEN: Magnesium (Mg) and Oxygen (180).
Explanation:
(a). Write down the electronic configuration of (i) magnesium atom, and (ii) magnesium ion, <br> (At No. of Mg=12) ,brgt (b). Write down the electronic configuration of (i) sulphur atom, and (ii) sulphide ion. <br> (At. No. of S=16).
Q+ ( poistive ion ) is an ion of element Q.
What has the highest value in the ion?
The proton number has the highest value in the ion
In an atomic element Q, the mass number is the number of the proton and the neutron, the electron encircles around the nucleus of the atomic element.
Recall that:
The electron is usually negatively charged;The neutron is a neutralThe proton is usually positively charged.∴
The atomic element Q+ has a positively charged ion, Thus, the proton number in the mass of the atomic element Q, therefore, has the highest value in the ion.
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2.What are the 3 effects of acid rain..?
Answer:
1) Damages soil and trees.
2) Makes holes in statues and buildings.
3) Pollutes rivers and lakes.
Answer:
It can harm animals underwater and on land
It has an effects on trees, freshwaters, and soils destroy insects and aquatic life-forms, and weathering stone buildings and sculptures, as well as impacts on human health.
Explanation:
I got it from a video. Hopefully, this helps.
How many grams of silver are present in 15.0 g of silver sulfate?
Answer:
4676.985 . grams of silver present in 15.0g of silver sulfate
32 g of CH4 react with 128 g of O2, producing 88 g of CO2. How many grams of water are produced?
Answer:
88 g
Explanation:
32 g of CH4 react with 128 g of O2, producing 88 g of CO2.
What is the best color? Personally I think its purple.
how many moles are in 425g of KNO3?
Answer:
The answer is 101.1032
Explanation:
