Answer:
white light is separated into its component colors red, orange, yellow, green, blue and violet.
Explanation:
Visible light, also known as white light, consists of a collection of component colors. These colors are often observed as light passes through a triangular prism.
Which force is equal but opposite to the one shown?
Answer:B
Explanation:
Write the congruence condition in symbolic form for each pair of triangles in pic above. If wrong answer I will report. If correct answer I will mark brainliest.
Answer: ABC&AMN are congruent by ASA comgruence
angle A=A
sideAN=AB
angle M=C
Explanation:
Which role do plants play in the nitrogen cycle?
O A. They take the nitrogen found in soil and turn it back into nitrogen
gas.
B. They break down wastes and return nitrogen compounds to soil.
C. They take up the usable forms of nitrogen found in soil.
D. They take up nitrogen gas directly from the atmosphere.
Answer:
C
Explanation:
i did the test
Which element is paired with the wrong symbol?
a. sulfur, S
b. potassium, P
c. nitrogen, N d. calcium, Ca
Answer:
b. potassium, P
Explanation:
The correct symbol for Potassium is K
Crystal needs more protein in her diet. Which food sources will best provide the building blocks she needs?
A simple circuit with a battery connected to a buzzer by electrical wires is placed on a table. When the buzzer sounds, the table begins to ratte. Which form of energy makes the table rattle?
chemical
ОО
electrical
heat
mechanical
Answer:
Mechanical
Explanation:
mechanical energy:
energy that an object has
because of its motion or
position
Practice: Determine the products, balance the
equation, and identify as organic or inorganic combustion reaction (circle).
1)
Ca + O2
Inorganic or Organic combustion?
2)
C3H2O +
02
Inorganic or Organic combustion?
1. Inorganic combustion
2. Organic combustion
Further explanationGiven
The chemical equations
Required
Balanced equation
Solution
Organic compounds have the characteristic that there is a chain of carbon atoms, while inorganic does not have a chain of carbon atoms
The reaction of a substance with oxygen is called a combustion reaction
Complete combustion of carbon compounds will get CO₂ gas, whereas if it is not complete it will produce CO gas
So Organic : contain a carbon atom (and often a hydrogen atom)
1. Ca + O₂ ⇒ CaO₂
Inorganic combustion⇒does not contain carbon
2. C₃H₂O + 3O₂ → 3CO₂ + H₂O
Organic combustion
Select one family from the periodic table: Groups 1A – 8A. Describe in depth the physical and chemical properties the members of this family share. Properties to consider including - electron configuration, reactivity, melting/boiling points, solubility, reactivity to other atoms, electronegativity, bonding trends, ionization trends, atonic size trends, etc.
Answer:
See explanation
Explanation:
The elements in group 1A are soft metals that are highly electro positive. They are univalent and have the general outermost electron configuration of ns1.
They tarnish upon exposure to the atmosphere and most of them catch fire when they are dropped in water.
They form basic oxides which react with acids to form salt and water. Their trioxonitarate (V) decomposes with difficulty to yield dioxonitrate III and oxygen.
The ease of formation of univalent positive ions increases down the group. The atomic and ionic sizes also increases down the group.
The melting and boiling points of group 1 elements decrease down the group. They most form ionic compounds of high melting and boiling points.
If 8.00 moles of NH₃ of and 10.00 moles of O₂ react in the following reaction, how many moles of which reactant will be left over? 4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g)
A) 2.00 mol O₂
B) 2.00 mol NH₃
C) 8.00 mol NO
D) no moles will be left over of either reactant because both are limiting.
Answer:
Option (D) no moles will be left over of either reactant because both are limiting
Explanation:
The balanced equation for the reaction is given below:
4NH₃(g) + 5O₂(g) → 4NO(g) + 6H₂O(g)
From the balanced equation above,
4 moles of NH₃ reacted with 5 moles of O₂.
Next, we shall determine the excess reactant. This can be obtained as follow:
From the balanced equation above,
4 moles of NH₃ reacted with 5 moles of O₂.
Therefore, 8 moles of NH₃ will react with = (8 × 5)/4 = 10 moles of O₂.
From the calculations made above, we see clearly that 10 moles of O₂ reacted completely with 8 moles of NH₃. This implies that both reactant are limiting reactant and there is no excess reactant.
Thus, no reactant is left over.
A container was found in the home of the victim that contained 124 g of ethylene glycol in 420 g of liquid. What was the percentage of ethylene glycol?
Answer:
29.5%
Explanation:
Step 1: Given data
Mass of ethylene glycol (solute): 124 gMass of liquid (solution): 420 gStep 2: Calculate the mass percentage of ethylene glycol in the liquid
We will use the following expression.
%m/m = mass of ethylene glycol/ mass of solution × 100%
%m/m = 124 g/420 g × 100% = 29.5%
The mass percentage of ethylene glycol in the liquid is 29.5%.
6832 J of heat energy is applied to 5.9 mol of water. If the original temperature of the water was 18.60C, the final temperature of the water will be _____________________0C. Record your answer to 1 decimal place.
Answer: The final temperature of the water will be [tex]34.0^0C[/tex]
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
[tex]Q=m\times c\times \Delta T[/tex]
Q = Heat absorbed=[tex]6832[/tex] Joules
m= mass of water = [tex]5.9mol\times 18g/mol=106.2g[/tex]
c = specific heat capacity = [tex]4.184J/g^0C[/tex]
Initial temperature of the water = [tex]T_i[/tex] = [tex]18.6^0C[/tex]
Final temperature of the water = [tex]T_f[/tex] = ?
Putting in the values, we get:
[tex]6832=106.2\times 4.184\times (T_f-18.6)[/tex]
[tex]T_f=34.0^0C[/tex]
The final temperature of the water will be [tex]34.0^0C[/tex]
(b) Sodium hydrogen carbonate is added to acetic acid
noti
Answer:
Solution : When sodium hydrogen carbonate is added to acetic acid then carbon dioxide (CO2) gas is evolved. CO2 trun s lime water milky it is a non supporter of combustion and is absorbed by strong alkalies like NaOH. Sodium hydrogen carbonate when added to acetic acid evolves a gas.
Explanation:
Chemically the ethanoic acid reacts with the sodium hydrogen carbonate to form carbon dioxide gas and water. The carbon dioxide gas produced rushes away from the water. This is seen as bubbles.
What is the equation for calculating gravitational potential energy on the Earth
How much energy is required to heat up a Styrofoam cup from 25oC to 40oC? The mass of the cup is 20 grams and the specific heat capacity of Styrofoam is 1.1 J/(g *oC). Group of answer choices
Answer:
[tex]Q=330J[/tex]
Explanation:
Hello!
In this case, since the energy involved during a heating process is calculated as shown below:
[tex]Q=mC(T_2-T_1)[/tex]
Whereas we consider the mass, heat capacity and temperature; we are able to plug in the given data to obtain:
[tex]Q = 20g*1.1\frac{J}{g\°C}(40\°C-25\°C)\\\\Q = 330J[/tex]
Best regards!
represents the covalent bond by dashes and shows the arrangement of covalently bonded atoms _____.
Answer:
13
Explanation:
Given 10.72 mole of NH3 gas, calculate the volume in L at STP
240.1 L NH₃
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[Given] 10.72 mol NH₃ (g)
Step 2: Identify Conversions
[STP] 22.4 L/mol
Step 3: Convert
Set up: [tex]\displaystyle 10.72 \ mol \ NH_3(\frac{22.4 \ L \ NH_3}{1 \ mol \ NH_3})[/tex]Multiply/Divide: [tex]\displaystyle 240.128 \ L \ NH_3[/tex]Step 4: Check
Follow sig fig rules and round. We are given 4 sig figs.
240.128 L NH₃ ≈ 240.1 L NH₃
Can some help me ....
Answer:
cool and dim ........nn
How many grams are in 0.002 moles of barium nitrate, Ba(NO3)2
Answer:
0.52 grams
Explanation:
To find the molar mass of Ba(NO3)2, use the periodic table and the mass of each element. Remember to multiply based on the number of atoms there are.
137.33 + [14.01+16(3)] 2 = 261.35
Now solve...
0.002 mol Ba(NO3)2 * 261.35 g Ba(NO3)2/1 mol Ba(NO3)2 = 0.5227
What is the value of Avogadro's constant?
Answer:
6.02214154 x 1023
Explanation:
how many grams are in 5.12 moles of Al
Answer:
138.14547456
Explanation:
How many moles Aluminium in 1 grams? The answer is 0.037062379468509.
We assume you are converting between moles Aluminium and gram.
You can view more details on each measurement unit:
molecular weight of Aluminium or grams
The molecular formula for Aluminium is Al.
The SI base unit for amount of substance is the mole.
1 mole is equal to 1 moles Aluminium, or 26.981538 grams.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between moles Aluminium and gram.
Answer:
[tex]\boxed {\boxed {\sf About \ 138 \ grams \ of \ aluminum}}[/tex]
Explanation:
To convert from moles to grams, we must use molar mass.
This can be found on the Periodic Table, so look for the symbol for aluminum: Al
Al: 26.981538 g/molWe can use this number as a ratio.
[tex]\frac { 26.981538 \ g \ Al} { 1 \ mol \ Al}[/tex]
Multiply by the given number of moles: 5.12
[tex]5.12 \ mol \ Al *\frac { 26.981538 \ g \ Al} { 1 \ mol \ Al}[/tex]
Multiply. The moles of aluminum will cancel.
[tex]5.12*\frac { 26.981538 \ g \ Al} { 1}[/tex]
[tex]138.145475 \ g \ Al[/tex]
Round. The original measurement of moles has 3 significant figures, so our answer must also have 3 sig figs.
For the number we calculated, that is the ones place. The 1 in the tenth place tells us to leave the 8.
[tex]138 \ g \ Al[/tex]
There is about 138 grams of aluminum in 5.12 moles.
68.3 grams of sodium hydroxide reacts with 78.3 grams of magnesium nitrate. ____ grams of magnesium hydroxide will form from this reaction, and ____ (compound) is the limiting reagent.
Blank 1:
Blank 2:
Answer:
30.8 grams of magnesium hydroxide will form from this reaction, and magnesium nitrate is the limiting reagent.
Explanation:
The reaction that takes place is:
2NaOH + Mg(NO₃)₂ → 2NaNO₃ + Mg(OH)₂Now we convert the given masses of reactants to moles, using their respective molar masses:
68.3 g NaOH ÷ 40 g/mol = 1.71 mol NaOH78.3 g Mg(NO₃)₂ ÷ 148.3 g/mol = 0.528 mol Mg(NO₃)₂0.528 moles of Mg(NO₃)₂ would react completely with (0.528 * 2) 1.056 moles of NaOH. There are more than enough NaOH moles, so NaOH is the reagent in excess and Mg(NO₃)₂ is the limiting reagent.
Now we calculate how many Mg(OH)₂ are produced, using the moles of the limiting reagent:
0.528 mol Mg(NO₃)₂ * [tex]\frac{1molMg(OH)_2}{1molMg(NO_3)_2}[/tex] = 0.528 mol Mg(OH)₂Finally we convert Mg(OH)₂ moles to grams:
0.528 mol Mg(OH)₂ * 58.32 g/mol = 30.8 gWhat does solubility mean?
Answer: the ability to be dissolved, especially in water.
Explanation: I think the answer you've picked is right
Hope this helps
Solubility is a process of dissolving solute into solvent. Therefore, the correct option is option A.
What is solubility?Chemistry refers to a substance's solubility as its capacity to combine with another substance, the solvent. The opposing property is called insolubility, which refers to the solute's lack of ability to generate such a solution.
The amount of the solute in a saturated solution, which is a solution whereby no more solvents can be dissolved, is commonly used to determine how soluble a material is in a certain solvent. It is now thought that the two chemicals are somewhere near a state of solubility equilibrium. Solubility is a process of dissolving solute into solvent.
Therefore, the correct option is option A.
To know more about solubility, here:
https://brainly.com/question/8591226
#SPJ2
During the daytime, wind blows off of the __________________ because that material takes ___________ time to get warm, creating relatively high pressure over it.
a. land, more
b. land, less
c. sea, more
d. sea, less
whoever gets this right gets brainlest
Answer: sea, more
I hope this helps
An airplane attempting to fly higher than 300,000 ft will:
A. need an extra engine to counteract the additional drag.
B. generate more lift because it will weigh less.
C. need an extra engine to burn more fuel and create more thrust.
D. begin to succumb to the power of gravity because of the decrease
in lift.
SUBMIT
Answer:
D. begin to succumb to the power of gravity because of the decrease
in lift.
Explanation:
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]
ur answer is:-
D. Begin to succumb to the power of gravity because of the decrease in lift.
Thanks Hope it helps.Tons
Problems
If a -1 ion has 10 electrons, what element is it?
Answer:
sodium ion
Explanation:
And, so if we gots a representation of Na+ , or Cl− , we know that for the sodium ion, while there are 11 charged nuclear particles (how do we know this?), there are 10 charged extranuclear particles, 10 electrons.
brainliest pls
How many kPa are in 924.8 torr?
Answer:
0.9248kPa
Explanation:
We are to convert from torr to kPa;
To solve this problem, more appropriately the conversion process is from:
torr to Pa and then kPa
These are units of pressure;
1 torr = 1Pa
So;
924.8torr is the same as 924.8Pa
1000Pa = 1kPa
924.8Pa = [tex]\frac{924.8}{1000}[/tex] = 0.9248kPa
Magnesium
Orbital Notation: Electron Configuration
If you can answer this question I will mark you BRAINLIEST
Answer:
cause the ectonic plates moving are what made
Explanation:
B. Add 3 mL of copper (II) sulfate (CuSO.) solution to a test tube. Drop a cleaned zinc strip into the solution. Permit the strip to remain in the solution for 10 minutes. If possible, leave the strip in the solution over night. Note any substance deposited on the zinc strip and any change in the color of the solution. Record your results.
Identify the balanced combination equation.
Cl205 + H2O → 2HCIO3
2Fe(OH)3 - Fe2O3 + 3H20
C1205 + 3H20 HCIO3
2Fe(OH)3 — 2FeO3 + 3H20
Cl₂0₅ + H₂O → 2HCIO₃
2Fe(OH)₃ → Fe₂O₃ + 3H₂O
Further explanationGiven
Chemical equations
Required
The balanced combination equation
Solution
There are several types of reactions that can occur
Synthesis/combination : 2 elements combine to form a single product
A + B⇒AB
Decomposition: One compound breaks down into 2 components
AB⇒A + B
Decomposition is the reverse of syntesis reaction
A balanced equation shows that the number of atoms from the reactant and product sides is the same
The chemical equations that fulfill the two things above (combined and balanced reactions) are:
Cl₂0₅ + H₂O → 2HCIO₃
2Fe(OH)₃ → Fe₂O₃ + 3H₂O
Answer:
Cl2O5 + 3H2O ⟶ HClO3 is the correct answer
Explanation: