Answer:
a
Explanation:
i think
What makes up soil and where do these main components come
from? ASAP
Answer:
Soil is a mixture of minerals, dead and living organisms (organic materials), air, and water.
Explanation:
Dead organisms decompose(kind of like fertilizer)
water comes from nearby watersheds, precipitation processes, etc.
Answer:
Soil is made up of three main components – minerals that come from rocks below or nearby, organic matter which is the remains of plants and animals that use the soil, and the living organisms that reside in the soil. The proportion of each of these is important in determining the type of soil that is present.
- Your science class is going to play a game of tug-of-war and you need to divide up the
teams. There are 11 people participating. If you want equal teams, how would you
decide who is on which side and why? Use what you have learned about Newton's
Laws of motions to explain.
Answer:
I will measure by weight and make sure the weight of each pupils on both teams are the same
Explain how water is able to control fire.
Answer ASAP
Plzz
Answer: Fire requires oxygen to burn. Water "smothers" fire and prevents it from acquiring more oxygen. Fire also requires heat, which cool water may prevent/remove.
Answer:
See what happens is the water bender uses the water to control the fire by... jp lol
Explanation:
Real answer is the water puts out the fire because it is a non-combustible aqueous solution, therefore it's able to be used to control a fire.
Please help me ASAP :(
Hydrogen-3 has a half-life of 12.32 years. It decays into helium-3. Suppose a
sample contains 6 atoms of hydrogen-3 and 18 atoms of helium-3. About
how old is the sample?
A. 12.32 years
B. 49.28 years
C. 36.96 years
D. 24.64 years
Answer:
24.64
Explanation:
Just took the test.
Why does air with higher amounts of water vapor have a lighter density?
Answer:
moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen
Answer:
Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.
Please help!
A solution of hydrochloric acid contains
a. fewer hydronium ions than chloride ions
b. fewer hydroxide ions than hydronium ions
c. more hydronium ions than chloride ions
d. more hydroxide ions than hydronium ions
Answer:
c)
more hydronium ions than chloride ions
What must happen for heat to be transferred by convection?
Answer:
D.) The liquid or gas must circulate to move the heat
Explanation:
If a reaction starts with 18.8 g of A and 9.4 grams of B, and 6 grams of C is produced, how many grams of D is made?
A+B --> C + D
Answer:
gis bdu sjfdj fbgd gadi besw ......c?●q
How many moles of oxygen are required to use up 2 moles of propane?
Answer:
6.0 moles
Explanation:
The thing to remember about balanced chemical equations is that the stoichiometric coefficients added to each chemical species that takes part in the reaction are equivalent to moles.
I think its 10 moles, hope this helps.
Please help!!!!!!!!!!!!!
What do you already know about the structure of a water molecule?
Answer:
The key to understanding water's chemical behavior is its molecular structure. A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent. This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons
Explanation:
Hope it helps
The work done on a machine, the product of the input force and the distance through which the force is exerted.
A- Work, input
B- Work, output
C- Mechanical Advantage
D- Power
PLEASEEEE HELP URGENTTTT
Answer:
i don't see the question
Explanation:
What is the answer to:
5.67 in x 23.321in
Answer:
132.23007
Explanation:
when u get ur answer what type of reaction is it?
-double replacement
-combustion
-synthesis
-decomposition
-single replacement
Answer: combustion reaction
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
The balanced chemical equation is:
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
The given reaction is a combustion reaction as in a combustion reaction , a susstaance is oxidized in the presence of oxygen to give carbon dioxide and water.
Describe the relationship between thermal energy and temperature of a substance.
help me pls :D
PLEASE HELP ASAP!!!!!!!!!! WILL GIVE BRAINLIEST TO CORRECT ANSWER!
Read the given chemical reaction.
C2H6 + O2 → CO2 + H2O
How many moles of H2O are produced during the complete combustion of 1.4 moles of C2H6?
A. 5.6 moles
B. 2.8 moles
C. 7.0 moles
D. 4.2 moles
Question 10 (4 points)
A 3.4 L balloon is let go near the surface of the Earth where the pressure is about 1.15 atm. As the balloon floats up to the top of the
atmosphere where the pressure is only about 0.35 atm it expands. What is the volume of the balloon at the top of the atmosphere?
Write the formulas for the following ionic compounds.
potassium iodide
magnesium phosphide
silver sulphide
iron(III) bromide
magnesium hydroxide
sodium sulphate
lead (IV) nitrate
ammonium carbonate
Answer:
1) KI
2) Mg3P2
3) Ag2S
4) FeBr3
5) Mg(OH)2
6) Na2SO4
7) Pb(NO3)4
8) (NH4)2CO3
Which of the following would most likely be spontaneous?
A. A reaction that is more ordered
B. A reaction that is at equilibrium
C. A reaction that requires energy
D. A reaction that produces heat
Answer:
D
Explanation:
i took the test
A reaction which is exothermic and results in an increase in the entropy of the system is said to be always spontaneous. A spontaneous reaction is one that produces heat. The correct option is D.
What is a spontaneous reaction?A process which has an urge or a natural tendency to occur under a given set of conditions is defined as the spontaneous process. Some of the spontaneous process need no initiation, they take by themselves. Dissolution of common salt in water, evaporation, etc. are examples.
Almost all spontaneous process are found to be exothermic. They release heat and warm up their surroundings. These reactions move towards the equilibrium with no need for an energy input from an external source.
Gibbs free energy is an important parameter to determine the spontaneity of a reaction. If the value of ΔG is negative, then the reaction will be spontaneous.
Thus the correct option is D.
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What is the organelle that contains DNA?
golgi apparatus
ribosomes
endoplasmic reticulum
chromosomes
Name 3 parts of an atom
Answer:
the three parts are protons, neutrons, and electrons
Explanation:
have a good day
You took a summer job at a restaurant. Your boss wants you to mop the bathroom and kitchen floors before you leave tonight. She hands you an unmarked white jug that is filled with a watery clear liquid. What are three things you should do before you mop the floor?
3) Calculate the net force *
3N
5N
Answer:
2N
Explanation:
since they are going both sides you subtract
Write the complete electron configurations for
(i) copper
(ii) xenon
Answer:
hello to get it from you and your favouri love your pic
Fill in the blanks and name the process.
What is the process of ____ reproduction where a cell makes ___ of itself?
Weathering and erosion affect the most in the formation of igneous rock. A. True B. False
Answer:
true
Explanation:
I have an irregular object that I want to find the density of. I put it in a graduated cylinder and the water rises by 12 mL. I put the object on a scale and it measures 42 g. What is the density of the object?
Answer:
12
Explanation:
For each of the following solutions, state whether the solution is saturated, unsaturated or supersaturated in the following conditions:
A) at 30o C, 70 g of KNO3 is dissolved in 100 g of water ________________________________
B) at 20 oC 0 g of KClO3 is dissolved in 100 g water________________________________
C) at 100 oC , 30 g of NaNO3 is dissolved in 100 g of water_____________________________
D) 50 g of NH4Cl at 70o C is dissolved in 100 g water. ________________________________
Answer:
C.at 100•C.30 g of NaNO3 is dissolved in 100 g of water
Loren has the samples of elements that are listed below at room temperature. He exposes the samples to the same heat source until each sample reaches a temperature of 90.0°C. 10 g of Al(s) (C subscript p. = 0.897 J/(gi°C)) 10 g of Ag(s) (C subscript p.= 0.234 J/gi°C ) 10 g of Fe(s) (C subscript p. = 0.450 J/gi°C) 10 g of Zn(s) (C subscript p. = 0.387 J/gi°C ) From first to last, which lists the order in which these samples will reach 90.0°C? Al, Fe, Zn, Ag Ag, Zn, Fe, Al Al, Fe, Ag, Zn Ag, Al, Zn, Fe
The order in which the substances will reach 90.0°C is; Ag, Zn, Fe, Al.
What is specific heat capacity?The term specific heat capacity refers to the quantity of heat that is required to raise the temperature of an object by 1K. The higher the heat capacity, the greater the heat that is required for the object to reach 90.0°C.
The order in which the substances will reach 90.0°C is; Ag, Zn, Fe, Al. We can see that Ag has the lowest heat capacity and the first to reach 90° while All has the highest heat capacity and the last to reach 90°.
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