Answer:
Manipulated/independent variable- DIFFERENT ELECTROLYTES
Responding/dependent variable- BRIGHTNESS OF BULB
Controlled variable- WET CELL
Explanation:
The independent variable, also known as manipulated variable is the variable that the experimenter changes or manipulates in an experiment. In this case where different electrolytes are observed to see which will light a bulb most brightly, the manipulated variable is the DIFFERENT ELECTROLYTES.
Dependent or responding variable is the variable of an experiment that responds to the changes made to the independent variable. It is the variable that is being measured in an experiment. In this case, the BRIGHTNESS OF BULB is dependent on the electrolyte used, hence, it is the responding variable.
Controlled variable or constant is the variable that the experimenter keeps the same throughout the experiment. In this case, the WET CELL is kept constant for all the electrolytes used i.e. it is not changed, hence, the WET CELL is the controlled variable.
A wavelength with a frequency of 14 HZ has a wavelength of 3 meters at what speed will this wave travel
Answer:
The speed will be 42 m/s
Explanation:
Wavelength is the minimum distance between two points on the wave that are in the same state of vibration. In other words, in a periodic wave the wavelength is the physical distance between two points from which the wave repeats.
Frequency (f) is the measure of the number of cycles or repetitions of the wave per unit of time. That is, it is the number of vibrations that occur in a unit of time. That is, how many peaks or valleys are repeated in a unit of time. If the unit of time is one second then the frequency is measured in Hertz (Hz).
The wavelength (λ) and the frequency (f) are two inversely proportional parameters and related by the propagation speed. The speed of propagation is the speed with which the wave travels, it is represented by the letter "v". The equation that links these three parameters is v = f * λ.
In this case:
f= 14 Hzλ= 3 mReplacing:
v= 14 Hz* 3 m
Solving:
v= 42 m/s
The speed will be 42 m/s
Is the following chemical equation balanced?
C₁₀H₂₂ + 31 O₂ ⟶ 20 CO₂ + 22 H₂O
Answer:
Yes- i balanced it-
Explanation:
What enzymes Break it down sugar ???
What is the maximum number of electrons that an S orbital can have?
1 electron
2 electrons
4 electrons
3 electrons
what is hybridization
HYBRIDIZATION:
Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory.Answer:
Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory
What is the chemical formula for Tetrasulfur pentoxide?
Answer:
S 4 O 5
Explanation:
the 4 and 5 are little
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Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.
Answer:
what are you supposed to answer???
Explanation:
How is the glucose level in the blood maintained? Which body system, organs, and hormones are used and what do they do?
Answer:
Explanation:
Insulin is an hormone used to regulate blood glucose, as it helps to maintain a balance. It allows for transport of glucose to organs such as liver.
The process of glucose regulation is a complex process. When food is eating glucose is absorbed into the bloodstream this happen from the gut and it raises the blood glucose level this causes insulin(hormone) to be released from the pancreas so glucose can move inside the cells and be used.
As glucose moves inside the cells, the glucose level inside the bloodstream returns to normal and insulin release slows down.
Glucose which is the main energy source used by cells is allowed to be taken up by muscles, liver and fat (adipose tissue) and use as a source of energy so they can function properly.
need points & are good at science?
Answer:
A
Explanation:
I believe the Correct answer would be A
What is the phenotype of a plant with the genotype RR?
Red
White
O
Pink
Answer:
This question is incomplete, but it can be answered based on general knowledge of the topic. The answer is RED
Explanation:
This question is describing a gene that codes for color. The allele for red color is R while that of white is r, however, these two alleles exhibit incomplete dominance to form an intermediate phenotype that is PINK (Rr).
Since the heterozygous is pink color, it will take two red alleles to make a plant phenotypically red i.e RR. Note that, genotype "rr" will be white.
In metallic bonds, electrons are referred to as electrons.
Answer:
Metallic bonding may be described as the sharing of free electrons among a lattice of positively charged metal ions. The structure of metallic bonds is very different from that of covalent and ionic bonds. ... In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.
what mass of NH3 (g) is produced when 2 x 10^23 molecules of N2 reacts
Answer:
m=8.58
Explanation:
[tex]n = \frac{m}{mr} [/tex]
N=n÷la
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, what mass of NH[tex]_3[/tex] (g) produced is 11.23 g.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
N[tex]_2[/tex] + 3H[tex]_2[/tex] [tex]\rightarrow[/tex] 2NH[tex]_3[/tex]
moles of N[tex]_2[/tex]= given number of molecules/ 6.022×10²³
= 2 x 0²³/ 6.022×10²³
= 0.33 moles
moles of NH[tex]_3[/tex] produced= moles of N[tex]_2[/tex]×2
=0.66moles
mass of NH[tex]_3[/tex]= moles of NH[tex]_3[/tex]×Molar mass of NH[tex]_3[/tex]
= 0.66 × 17.03
=11.23 g
Therefore, what mass of NH[tex]_3[/tex] (g) produced is 11.23 g.
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3. How many moles of KCl is produced according to the chemical reaction?
2KCIO3(s) -------> 2KCI(s) + 302(g) M
Answer:
the answer should be: 12.00 Mol KCIO³ × 3 Mol 0² divided by 2 mol KCIO³ = 18.00 mol 0²
What is the solvent in a salt solution like
brine?
Answer:
in a salt solution, water is the solvent. during dissolving, particles of solvent collide with particles of solute. they sorround the particles of solute, gradually moving them away until the particles are evenly spread through the solvent.
Explanation:
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Name the most abundant compound found in air?
Answer:
The two most abundant compounds in air are the gases carbon dioxide, CO2, and water vapor, H2O
Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant compound found in the air. It accounts for about 78% of the air that we breath. It is closely followed by oxygen that accounts for about 21% of the air.
1. What is a food web?
A group of animals
a food chain with two levels
A producer and consumer relationship
how several food chains are related
Answer:
a producer and consumer relationship how several food chains and related.
Answer:
The answer is:
Explanation:
A food chain with two levels.
Hope this helps!!
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0.6 sample an unknown organic acid found in muscle cells is burned in air and found to contain 0.24g of carbon, 0.04g of hydrogen with the rest being oxygen. If the molecular weight of the substance is 90g/mol what is the emperical and molecular formula
Answer:
Molecular formula is, C₃H₆O₃
Empirical formula (with the lowest subscript) → CH₂O
Explanation:
We assume that the organic acid's mass is 0.6 g. We know that, in 0.6 g of compound we have 0.24 g of C and 0.04 g of H, then, we have
(0.6 - 0.24 - 0.04) = 0.32 g of O.
We determine each mol:
0.24 g /12 g/mol = 0.02 mol of C
0.04 g/ 1g/mol = 0.04 mol of H
0.32 g/ 16 g/mol = 0.02 mol of O
1 mol of acid weighs 90 g/mol.
In 0.6 g of acid, we have, (0.6 g / 90g/mol) = 0.0067 moles
Let's find out the formula with rules of three:
0.00667 mol of acid have 0.02 moles of C
1 mol of acid may have (0.02 /0.00667) = 3 mol of C
0.00667 mol of acid have 0.04 moles of H
1 mol of acid may have (0.04 /0.00667) = 6 mol of H
0.00667 mol of acid have 0.02 moles of O
1 mol of acid may have (0.02 /0.00667) = 3 mol of O
Molecular formula is, C₃H₆O₃
We confirm by the molar mass: 12g/mol . 3 + 6 . 1g/mol + 32g/mol . 3 = 90
Empirical formula (with the lowest subscript) → CH₂O
What mantle is forced down and begins to melt?
HELP!
Answer:
magma
Explanation:
Answer:
magma rises through it.
Explanation:
Imagine a group of hunters kills half of the rabbit population. How will it affect the other organisms?
Answer:
They will die off too
Explanation:
The animals that feed off the rabbits will start to die off from starvation, and so will the animals tho eat off of those. The entire food chain above the rabbits will start to decrease, while the plants and animals that the rabbits eat will increase in population due to less predators.
Calculate the density (g/ml) of mineral that has volume (total space occupied by something) of 3.8 ml and a mass of 22.4 g.
A- 5.9 g/ml
B- 85.1 g/ml
C- 0.17 g/ml
D- 26.2g/ml
Answer:
D
Explanation:
These organs are just containers for air?
Respiratory system
Which set of data is more precise?
O 1, 2, 1, 2
O 1,1.5, 1.5, 1
O 0.5, 1, 2,1.5
O 1, 2, 2, 1.5
Answer:
01,1.5,1.5,1
Explanation:
List the primary consumers in the food web please help
Answer:
Giraffe, rhinoceros, grasshopper, mouse, and deer
Explanation:
Primary consumers eat producers (plants). Therefore, all the animals that eat the plants are primary consumers.
Answer:
cricket, mouse, snake, bird
Explanation:
What was Rutherford's model of the atom missing?
Answer:
The Rutherford atomic model stated that an atom is mostly an empty space that consist of nucleus and electrons, where nucleus is positively charged and electrons are negatively charged.
But Rutherford atomic model missed to add the quantum mechanics or energy level for electrons. Rutherford was unable to make understand the planetary movement of electrons around nucleus and later Bohr's model explained it.
Hence, Rutherford's model of the atom missed to explain the planetary movement of electrons around nucleus.
Charli is boiling a pot of water as she prepares dinner. The temperature at which the water boils can be explained by the external
pressure and
A
the amount of heat that is added to the pot of water.
B. the volume of the sample of water being heated.
C. the rate at which heat is added to the pot of water.
D
the strength of attractive forces among the water molecules.
PLEASE ANSWER QUICKLY THIS IS DUE IN 5 MINS!!
Answer:
ya tu sabes cómo se los aseguro
What is the mass of 1.9 x 10^22 molecules of CaCO3?
3.2 g CaCO₃
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 TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
1.9 × 10²² molecules CaCO₃
Step 2: Identify Conversions
Avogadro's Number
[PT] Molar Mass of Ca - 40.08 g/mol
[PT] Molar Mass of C - 12.01 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide: [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
3.15794 g CaCO₃ ≈ 3.2 g CaCO₃
can someone please help me with this question for chemistry. What is the number of moles in 1216 g Sr3(PO4)2? the 3,4, and 2 and small numbers that go under the letters btw
takes Mrs. Pare' three hours to drive 175 miles from her house in Pennsylvania to her house in Maryland. What is her average speed?
Answer:58.33mph
Explanation:
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165g= ______________ kg
Answer:
Hi
Explanation:
Hi