Answers
A. Water
B. Housing
C. Plants
D. Animals
E. Warmth
Related Questions
How many grams of NH3 can be dissolved in 50 grams of water at 50oC?
Answers
15 grams of NH3 can be dissolved
Further explanationGiven
50 grams of water at 50°C
Required
mass of NH3
Solution
Solubility is the maximum amount of a substance that can dissolve in some solvents. Factors that affect solubility
1. Temperature: 2. Surface area: 3. Solvent type: 4. Stirring process:We can use solubility chart (attached) to determine the solubility of NH3 at 50°C
From the graph, we can see that the solubility of NH3 in 100 g of water at 50 C is 30 g
So that the solubility in 50 grams of water is:
= 50/100 x 30
= 15 grams
If 10.0 L of nitrogen gas reacts with 16.0 L of hydrogen gas, how many liters of ammonia gas (NH3) will be
produced?
Answers
Volume of ammonia gas : 10.67 L
Further explanationGiven
10.0 L of nitrogen gas
16.0 L of hydrogen gas
Required
Volume of ammonia gas
Solution
Reaction
N₂ + 3H₂ ⇒ 2NH₃
From Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles
Find limiting reactant :
N₂ : 10 : 1 = 10
H₂ : 16 : 3 = 5.3
H₂ as a limiting reactant
So volume of NH₃ based on H₂
= 2/3 x volume H₂
= 2/3 x 16 L
= 10.67 L
The Independent Variable is:
Kinetic Energy
Height
Mass
Speed
Answers
A chemical process used to produce ethanol as a fuel additive was expected to produce 5,000 kilograms of ethanol based on the amounts of starting materials used, but only 4,760 kilograms were produced. What was the percent yield for ethanol in this process?
A)1.09
B)4.80
C)95.2
D)105
Answers
Answer:
C)95.2
Explanation:
Given parameters:
Expected yield = 5000kg
Experimental yield = 4760kg
Unknown:
Percentage yield = ?
Solution:
The percentage yield of the substance is determined by find the ratio of the true experimental yield to the expect yield and multiply by 100;
Percentage yield = [tex]\frac{4760}{5000}[/tex] x 100 = 95.2%
The theory of _______ of matter states that cannot be created or destoryed
Word bank: Matter Volume Element Conservation Mass Atoms Properties
Answers
Answer:
mass pic is explanation hope it helps
A solid has shape and volume?
Answers
Answer:
A solid has a definite volume and shape, a liquid has a definite volume but no definite shape, and there is no definite volume or shape of a gas. Usually, the transition from solid to liquid does not change a substance's volume substantially.
Explanation:
How many Joules of heat are required to melt 250 grams of ice at 0°C?
AHfus = 334 J/g
AHvap = 2258 J/g
Cp= 4.184 J/g C
Answers
Answer:
cp =4.184/c / j
Explanation:
ahvap=2258j/g
Heat required : Q = 83500 J = 83.5 kJ
Further explanationGiven
mass ice = 250 g at 0°C
Required
The heat required
Solution
The heat to change the phase can be formulated :
Q = m.Lf (melting/freezing)
Lf=latent heat of fusion
Input the value :
Q = 250 g x 334 J/g
Q = 83500 J
4) What is the Formula weight of MgCl2 and the explanation.
Answers
95.21 g/mol
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableExplanation:Step 1: Identify
MgCl₂
Step 2: Find Formula Weight
[PT] Molar Mass of Mg - 24.31 g/mol
[PT] Molar Mass of Cl - 35.45 g/mol
Molar Mass of MgCl₂ - 24.31 + 2(35.45) = 95.21 g/mol
A by-product of photosynthesis that is not used by the plant, but rather released into the air, is ________________.
Answers
Answer: I think is carbon dioxide!!
Explanation: ( i havent learned about photosynthesis in a long time :) )
hope i helped!! also have a good day!
The stability of atomic nuclei is most affected by the
a)number of N
b) number of e
c) number of P
d) ratio of N to P
ASAP PLZZ
Answers
Select the correct answer.
Which statement best describes how chemical equations demonstrate conservation of mass?
A.
The number of reactants is the same as the number of products.
B.
The compounds are the same on each side of the reaction.
C.
The number of atoms of each element is the same on each side of the equation.
D.
The state of matter is the same on each side of the equation.
Answers
Answer:
All of the Above
A.The number of reactants is the same as the number of products.
B.The compounds are the same on each side of the reaction.
C.The number of atoms of each element is the same on each side of the equation.
D.The state of matter is the same on each side of the equation.
Explanation:
Answer:
C
Explanation:
I did the test
Select the set of coefficients that would balance the following equation:
S + HNO3 →
H2SO4 + NO2 + H2O
O 3, 2, 2, 3,1
O 6, 2, 2, 6, 2
O 1.6, 1, 2,6
O 1,6, 1, 6,2
Answers
which part of the plant you think is the least important?
Answers
Answer:
Well maybe the pedals they don't help much
Explanation:
Answer:
brainliest please
Explanation:
the pollen probably because other plants have it
HELP ASAP DUE IN 5 MINUTES
Answers
the second one i think, hope this helps
Answer:
a
Explanation:
plsss help ASAP!!!
BRAINLIEST
Answers
Answer:
-175.15
Explanation:
1.0 °C = 274.15 K
2.0 °C = 275.15 K
3.0 °C = 276.15 K
4.0 °C = 277.15 K
5.0 °C = 278.15 K
6.0 °C = 279.15 K
7.0 °C = 280.15 K
8.0 °C = 281.15 K
9.0 °C = 282.15 K
A gas that exerts a pressure of
15.6 psi in a container with a volume of
L will exert a
pressure
of
25.43 psi when transferred to a
container with a volume of 1.895 L.
Answers
Answer:
V1 = 3.09 L
Explanation:
Initial Pressure, P1 = 15.6 psi
Initial Volume, V1 = ?
Final Pressure, P2 = 25.43 psi
Final Volume, V2 = 1.895 L
The relationship between these quantities is given by boyles law;
V1P1 = V2P2
V1 = V2P2 / P1 = 1.895 * 25.43 / 15.6
V1 = 3.09 L
Balance the equation
AgBr +
GaPO4 →
Ag3PO4 +
GaBi3
Answers
Answer:
3AgBr + GaPO4 ----> Ag3PO4 + GaBr3Explanation:
which of these hypothesis is not falsifiable?
a. there is life on other planets.
b. our sun will burn out within the next billion years.
c. the universe is stagnant.
d. jupiter is the best planet in our solar system.
Answers
Answer: it is D
Explanation:its D cause that is a opinion it is not sientificly correct
help me out please!?
Answers
Answer:
area a
Explanation:
A boy sets up a picnic on the beach next to a sand dune. how are sand dunes formed?
Answers
Answer:
Sand dunes are created when wind deposits sand on top of each other until a small mound starts to form. Once that first mound forms, sand piles up on the windward side more and more until the edge of the dune collapses under its own weight.
Give an example of elastic potential energy
Answers
Answer:
An archer's stretched bow.
Explanation:
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.
What is the density of an
object that has a mass of
120 g and volume of 5 ml?
Answers
The density of an object ρ = 24 g/ml
Further explanationGiven
mass of an object = 120 g
volume = 5 ml
Required
The density
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Input the value :
ρ = 120 g : 5 ml
ρ = 24 g/ml
8. Which type of bond results when one or more valence
electrons are transferred from one atom to another?
A) a hydrogen bond
B) an ionic bond
C) a nonpolar covalent bond
D) a polar covalent bond
Answers
Answer:
B
Explanation:
Which layer of the atmosphere is directly above the troposphere?
exosphere
stratosphere
troposphere
mesosphere
Answers
Answer:
stratosphere is directly above troposphere I think
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas
Answers
Explanation:
an ideal gas moves in constant, rapid motion
What animal did Darwin study in the Galapagos Islands?
1. Yellow fin tuna
2. Spiders
3. Hawks
4. Finches
Answers
Answer:
The answer is 4.
Explanation:
Finches.
Answer:
4. Finches
Darwin studied the forms of the beak, and found that they were different based on what they ate.
3. Iron + copper sulphate
Will it react
Answers
Answer: Iron displaces copper ions from an aqueous solution of copper sulphate. ... In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).
Explanation:
Which organelle of a prokaryotic cell contains genetic information?
cell membrane
ribosomes
nucleus
nucleoid
Answers
Answer:
The right option is the 4 one. nucleoid
Prokaryotic cells are simple cells that lack a definite nucleus and some membrane-bound organelles. Prokaryotic cells have a nucleoid region, which is an irregularly-shaped central region of the cell that contains the cell’s genetic information (DNA). Other organelles that can be found in prokaryotic cells include plasma membrane, cell wall, cytoplasm, and ribosomes.
Explanation:
Answer:
nucleoid
Explanation:
In which of these do you need to know the direction in which the object is moving?
velocity
instantaneous speed
average speed
mass
Answers
Answer:
velocity
Explanation:
nuclear energy is created through the process of splitting apart atoms and releasing large amounts of heat energy that can be converted to electrical energy.this process is known as?
