Answer:
Find the explanation below.
Explanation:
Sentence A: In sentence A, the bolded words create a positive undertone to the entire meaning of the text. Words such as unimaginable accomplishment, stunning, and fascinated produce a pleasing and heartening mood. They make it clearer to the reader that this action by the scientists elicited a favorable response from the viewers.
Sentence B: In sentence B, there is a negative undertone to the text. The use of descriptors such as shocking, recklessly, alarmed, tells the reader of the unfavorable response the action of the scientists produced in the viewers. A gloomy mood is thus created.
what are some non living factors that you need in a habitat?
Answer:
You depend on each other and need the nonliving things in your home, like food, water, air, and furniture. Living things need nonliving things to survive. Without food, water, and air, living things die. Sunlight, shelter, and soil are also important for living things.
Explanation: i dunno if this is right or not ;-; but i tried UnU
which of the following does NOT cause the
urban heat island effect
Answer:
what are the options?
Explanation:
In an ecosystem the urban heat island effect is caused by construction of tall buildings and concrete roads.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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(Thermodynamics question) When dynamite and oxygen create an explosion, the q value for the system (reactants), would be __
a. positive
b. negative
c. zero
i need help on this question
NO LINKS!
Answer:
2 experimental
Explanation:
Which of these elements would form an ion with a charge of -1?
Group of answer choices
K
C
F
Answer:
k
Explanation:
that is shide rong and shide right
What would make oppositely charged objects attract each other more?
increasing the positive charge of the positively charged object and increasing the negative charge of the negatively
charged object
decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively
charged object
increasing the distance between the positively charged object and the negatively charged object
maintaining the distance between the positively charged object and the negatively charged object
Answer: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object.
Explanation:
edge
Answer:
Your answer is A.
Explanation:
_____ Ca(NO3)2 + _____ Fe → _____ Fe(NO3)3 + _____ Ca I need this done quick and fast Balancing chemical equations
Answer:
3, 2, 2,3
..........................
SEP Analyze Data Look at the phase diagram. What is the state of matter for methanol at a temperature of −0.1°C and a pressure of 2.5 atm?
How many grams are there in 7.40 moles of AgNO3?
Answer:
1257.03 grams
Explanation:
mass=mole*molar mass
mass=7.4*169.87= 1257.03
Mass is a measure of how much matter something has.
False
True
Answer:
true
Explanation:
An unknown compound has the following chemical formula:
P4Sx
where x stands for a whole number.
Measurements also show that a certain sample of the unknown compound contains 2.9 mol of sulfur and 1.94 mol of phosphorus. Write the complete chemical formula for the unknown compound.
will give brainliest :]
Answer:
where the main questions of these assmesnt
Explanation:
So I have an F in science, and everything is due today. Am I going to fail 9th grade because I didn't pass that class?
Answer:
i dk how ur school works, but you'll most likely have to take that science again to get the credits u need to graduate
Explanation:
Vhat is thermal energy?
the average overall volume of a system
the total number of molecules in a system
the kinetic energy of particles in a system
the measure of temperature in a system
How many moles of hydrogen gas (H2) are required to react completely with 0.75 moles of nitrogen
gas (N2)?
Answer:
2.25 moles H2
Explanation:
The equation N2+ 3H2 > 2NH3
1 mol of N2 gives 3 mol of H2
Then
. 75 mole N2 give 3*.75 = 2.25 moles of H2
PLEASE ANSWER ASAP!!!!! 50 points! :
You have an aquarium with a volume of 100 liters. The tank is generally used to hold water. This tank, however, is filled with fine sand. You also have measuring spoons, the smallest of which holds a volume of 1 milliliter. How can you use one or more measuring spoons to count the grains of sand in the aquarium? Write your ideas for counting the sand grains using the measuring spoon. Decide if the idea would lead to an exact count or an estimate. Suggest how you could improve your ideas. What assumptions are necessary for your procedure for counting sand grains to be reasonable? Explain your reasoning. How does your method of counting a large volume of sand grains compare to the task of counting atoms in a sample of matter?
Answer:
first, find the density of sand grains by using a small weighing scale. put at least 10 measuring spoons of sand on the scale. calculate the density by its formula d = m/v. this result can count the volume whole sand grains based on its weights
You can count the grains of sand ( estimated value ) by ; determining an estimate of the density and mass of the sand grains in the aquarium.
Since the volume of the tank = volume of the sand therefore the volume of the sand grains in the aquarium will be 100 liters, next is to determine the mass of the sand grains by using a weighing scale to take the mass of at least 20 measuring spoons of sand.
Find the density of the sand grains using the formula for determining, Density = mass / volume . with this result, We can determine an estimate of the number of sand grains with results gotten from the density and mass of the sand grains
To determine the number of atoms in a sample matter we also determine the mass and density of the matter just as with the counting of sand grains in the tank. which we can then use to determine an estimate of the number of atoms contained in the matter.
Hence we can conclude that you can count the grains of sand ( estimated value ) by; determining the density and mass of the sand grains in the aquarium.
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Answer:
C
Explanation:
This is a chemical reaction, because only the electrons were rearranged
What’s the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen?
The equivalence point for a strong acid – strong base titration will occur at:
pH < 7
pH = 7
pH > 7
pH = 14
I believe the ans is (2) pH = 7.
Explanation:
At the equivalence point, the salt of strong acid and strong base is completely hydrolyzed which gives a neutral solution with pH 7 as H+ ion concentration is equal to OH- ion concentration.
a. 35
b.65
c.81
d.180
I think it's 80 . 12
pls tell me if correct
1. What did you notice about the distance between the atoms as the number of bonds increased? (Compare bond of H2S and H2O)
2. What is the relationship between atomic size and bond length for H2O / H2S and CO2 / CS2?
Answer:
Inverse relationship between number of covalent bonds and bond length.
Explanation:
There is inverse relationship between number of covalent bonds and bond length which means that if one increases the decreases or the one decreases the increases. When the number of covalent bonds between two atoms increases, the bond length decreases because there are more number of electrons present between the two nuclei, the two nuclei can get closer to each other until both nuclei experience their repulsive force of attraction. In bond of H2S has lower electronegativity value as compared to H2O so the bond length decreases due to attraction of shared pair of electrons by both nuclei.
How many grams of chlorine would exert a pressure of 610 torr in a 3.26-liter container at standard temperature? 4.25gCL
Answer:
[tex]m=8.28gCl_2[/tex]
Explanation:
Hello there!
In this case, according to the given information, it possible for us to realize that this problem is solved via the ideal gas equation:
[tex]PV=nRT[/tex]
By which we solve for the moles of chlorine gas as shown below:
[tex]n=\frac{PV}{RT}[/tex]
Next, we plug in the given pressure (in atm), the volume and standard pressure (273.15K) to obtain:
[tex]n=\frac{610/760atm*3.26L}{0.08206\frac{atm*L}{mol*K}*273.15K}\\\\n=0.117molCl_2[/tex]
Then, since the molar mass of chlorine gas (Cl2) is 70.9 g/mol, the mass of this gas turns out to be:
[tex]m=0.117molCl_2*\frac{70.9gCl_2}{1molCl_2} \\\\m=8.28gCl_2[/tex]
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the greenhouse effect
The greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
What are greenhouse gases?Greenhouse gases are different types of gaseous elements that trap solar radiation on the Earth's surface.
The most important greenhouse gases include, among others, methane and carbon dioxide (CO2).
In conclusion, the greenhouse effect refers to global warming as a consequence of the accumulation of greenhouse gases.
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Select all that apply.
When the products of a reaction have less energy than the reactants:
The reaction is exothermic.
The reaction is endothermic.
The reactants lost internal energy.
The change in enthalpy is positive.
Answer:
The reaction is endothermic
Explanation:
we know that the reactants had to get energy from its surroundings which means that the reaction is endothermic
How many ml are in 3,764liters?
Hint: ‘mili’ means a thousandth (1/1,000)
Round your answer to the nearest whole number
Answer:
Your answer I think would be 3,764,000 .If Im wrong please correct me and comment below.
I got my answer by converting 3,764 liters to millileters using a converter calculator
then I rounded it to the nearest whole number using the rounding calculator from calculator soup. This has worked for me in the past.
Hope this helps, good luck!
How many total atoms are in 1 mole of H2O?
Answer:
1.806 x 10^24 atoms total
Explanation:
If you start with 30.0 grams of sodium fluoride, how many grams of magnesium fluoride will be produced?
Answer:
22.2 g of MgF₂
Explanation:
We star from the reaction:
NaF → sodium fluoride
Mg → Magnesium
2NaF + Mg → MgF₂ + 2Na
2 moles of sodium fluoride react to 1 mol of Mg in order to produce 1 mol of magnesium fluoride and 2 moles of sodium.
We convert mass of the reactant to moles:
30 g . 1mol / 41.98 g = 0.715 mol
We assume that Mg is in excess
As ratio is 2:1, if we have 0.715 moles of NaF we may produce the half of moles, of MgF₂
0.715 mol /2 = 0.357 moles of MgF₂
We convert moles to mass: 0.357 mol . 62.30g /mol = 22.2 g
What is the mass of 6.40 moles of copper(II)chloride (CuCl2)?
Answer:
860. g CuCl₂
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableCompoundsMolesStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
[Given] 6.40 mol CuCl₂
[Solve] g CuCl₂
Step 2: Identify Conversions
[PT] Molar Mass of Cu: 63.55 g/mol
[PT] Molar Mass of Cl: 35.45 g/mol
Molar Mass of CuCl₂: 63.55 + 2(35.45) = 134.45 g/mol
Step 3: Convert
[DA] Set up: [tex]\displaystyle 6.40 \ mol \ CuCl_2(\frac{134.45 \ g \ CuCl_2}{1 \ mol \ CuCl_2})[/tex][DA] Multiply [Cancel out units]: [tex]\displaystyle 860.48 \ g \ CuCl_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
860.48 g CuCl₂ ≈ 860. g CuCl₂
That big lorry hit the new car.change to passive voice
The limiting reactant is...
A). The reactant that produces the least amount of product
or B). The reactant that produces the most amount of product
I give Brainliest ! plz no links!
Answer:
A.) produces the least amount of product.
Describe how electromagnetic waves are formed and
travel through space.
Answer:
Electromagnetic waves are created by a charged particle that generates an electric field. The electric field creates a magnetic field. As the charged particle moves, the electric field and magnetic field keep changing, which causes the wave to move
Answer:
Electromagnetic waves are formed by charged particles which create an electric field. The electric field generates a magnetic field. As the particle moves, the electric field changes, which causes the magnetic field to change.
Explanation:
Edge, 2022.