Answer:
Reflection takes place from the polished smooth surfaces
Explanation:
A vacuum does not refer to an opaque body. An opaque body does not allow light to pass through it while a vacuum is simply empty space without air.
A smooth polished surface often acts as a mirror, it is a good reflector of light.
The moon is a non luminous body in the sky. It merely reflects the light from the sun.
A Pinhole camera can not take pictures of moving objects because it only focuses on any image placed before it.
Shadows are not inverted, the always appear upright.
*Urgent*
A balloon has a volume of 31.8 L at a temperature of 46 degrees C. What is the new temperature
of the balloon in degrees C if the volume is changed to 49.2 liters?
Round answers to 0.1 decimals
Answer:
The new volume will be
0.7 L
Explanation:
This is an illustration of Charles' law, some of the time called the temperature-volume law. It expresses that the volume of a gas is straightforwardly corresponding to the Kelvin temperature, while pressing factor and sum are held steady. The condition is V 1 T 1 = V 2 T 2 , where V is volume and T is temperature in Kelvins. Known V 1 = 0.5 L T 1 = 20 ∘ C + 273.15 = 293 K T 2 = 150 ∘ C + 273.15 = 423 K Obscure V 2 Arrangement Revise the condition to confine V 2 . Substitute the known qualities into the condition and address. V 2 = V 1 T 2 T 1 V 2 = ( 0.5 L × 423 K ) 293 K = 0.7 L adjusted to one huge figure
Name the following compound: C2Cl6
A 0.068 M solution of benzamide has a pOH of 2.91. What is the value of Kb for
this compound?
Answer:
Kb = 2.23 x 10⁻⁵
Explanation:
Benz-CO-NH₂ + H₂O => Benz-CO-NH₃⁺OH⁻ ⇄ Benz-CO-NH₃⁺ + OH⁻
given pOH = 2.91 => [OH⁻] = 10E-2.91 = 1.23 x 10⁻³M
Benz-CO-NH₃⁺OH⁻ ⇄ Benz-CO-NH₃⁺ + OH⁻
At Equilibrium 0.68M 1.23 x 10⁻³M 1.23 x 10⁻³M
Kb = [Benz-CO-NH₃⁺][OH⁻]/[ Benz-CO-NH₃⁺OH⁻]
= (1.23 x 10⁻³)² M²/ 0.068M = 2.23 x 10⁻⁵
which deflects winds to the right or left
a) jet streams
b) land breeze
c) sea breeze
d) coriolis effect
Answer: right and what are the answers for?
Explanation:
Why is it important to predict consequences when decision-making?
A.Considering the consequences can help you pick the option with the best outcome.
B.Predicting consequences isn’t a step in the decision-making process.
C.There usually aren’t any consequences when making decisions.
D.Consequences won’t help you make a decision.
What does temperature measure?
A. Degrees within molecules
B. Pressure within molecules
C. Kinetic energy within molecules
D. Potential energy within molecules
SUBME
Answer:
C is the answer!
Explanation:
temperature is a measurement of the average kinetic energy of the particles in an object
S8 +O2 = SO8
Given 80 mols of product, find the amount of each reactant in mols.
Answer:
10 moles of S₈
320 moles O₂
Explanation:
S₈ +O₂ → SO₈The balanced equation is:
S₈ + 32O₂ → 8SO₈Now we can convert moles of SO₈ (the product) into moles of each reactant, using the stoichiometric coefficients of the balanced reaction:
80 mol SO₈ * [tex]\frac{1molS_8}{8molSO_8}[/tex] = 10 mol S₈80 mol SO₈ * [tex]\frac{32molO_2}{8molSO_8}[/tex] = 320 mol O₂In order for 80 moles of SO₈ to be produced, 10 moles of S₈ need to react with 320 moles of O₂.
what is the similar of snow and sleet pls help me
Answer:
Explanation: Snow forms in clouds at temperatures below freezing. As snow falls through the atmosphere, the air remains at least 32° F or colder. ... It then re-enters another pocket of cold air before reaching the surface. The snowflake refreezes and becomes an ice pellet we call sleet.
Will mark brainly read it make sense no funny business
Answer: mixed
compound
Explanation:
According to the dichotomous key, organism 2 is a
A)
dragonfly nymph
B)
water scorpion
C)
bristle worm.
D)
water mite.
A student lives in a place that receives lots of snow and ice during the winter. The student has observed that the highway department spreads salt on the road after a snowfall. Which of the following correctly explains why the highway department uses salt on the roads?
Salt lowers the freezing point of water, which makes the melted snow on the road less likely to form ice.
Salt raises the freezing point of water, which makes the melted snow on the road less likely to form ice.
Salt raises the vapor pressure of water, which makes the melted snow more likely to evaporate before it freezes.
Salt lowers the osmotic pressure of water, which makes the melted snow more likely to be absorbed into the ground before it freezes.
Answer:
Salt lowers the freezing point of water, which makes the melted snow on the road less likely to form ice.
Answer:
A
Explanation:
Edge.
what is the Ka of a 0.0592 M solution of hydrofluoric acid (HF) with a pH of 6.90
Answer:
2.7*10^-13
coefficient= 2.7
exponent= -13
Explanation:
Answer: 2.7 x 10^-13
Explanation:
Calculate the work for the expansion of CO2 from 1.0 to 6.5 litres against pressure of 1.0 atm at constant temperature
Answer:
557.3J is the work of expansion of the CO2 gas
Explanation:
The work of expansion of a gas under constant temperature and pressure (Isobaric pressure) is:
W = P*ΔV
Where W is work
P is pressure = 1.0atm
ΔV = Final volume - Initial Volume = 6.5L - 1.0L = 5.5L
Replacing:
W = 1.0atm*5.5L
W = 5.5atmL
In Joules (1atmL = 101.325J):
5.5atmL * (101.325J / 1atmL) =
557.3J is the work of expansion of the CO2 gas
What important ingredients do you need to create a fertilized egg
Answer:
In the 1970s, Epel and other researchers showed that calcium is the essential factor that sparks development in eggs. As calcium levels rise, metabolic changes occur that cause the egg to divide and form into an embryo.
Explanation:
CH4+202>CO2+2H2O ; How many grams of water are produced from 30.0g of oxygen? PLS HELP AND SHOW WORK!!!!
Identify the pair in whic 1 the formula does not match the name
sulfite, SO32
nitrite, NO3-
hydroxide, OB
dichromate, C 20-2
Answer:
hydroxide is the one because it is the one HAHAH
Answer:
hydroxide, OB
Explanation:
hydroxide,OB
How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP??
PLEASE HELP
Answer:
8.8
Explanation:
You can view more details on each measurement unit: molecular weight of Aluminum or grams The molecular formula for Aluminum is Al. The SI base unit for the amount of substance is the mole. 1 mole is equal to 1 mole of Aluminum.
Anyone know the answer to this?
A sample of solid candle wax is put into a pot on the stove. Heat energy is transferred to the wax at a constant rate by the burner on the stove. Match the segments on the graph to the correct description of what is happening to the wax.
(match them)
Gaseous wax heating
melting
boiling
liquid wax heating
solid wax heating
A-B
B-C
C-D
D-E
E-F
Answer:
A-B : solid wax heating
B-C : melting
C-D : liquid wax heating
D-E : Boiling
E-F : Gaseous wax heating
A sample of solid candle wax is put into a pot on the stove. Heat energy is transferred to the wax at a constant rate by the burner on the stove. A-B is solid wax heating, B-C is melting, C-D is liquid wax heating, D-E is Boiling and E-F is Gaseous wax heating.
What is heating ?A heating system is a device that uses thermal energy to keep indoor temperatures within a house, workplace, or other structure at a comfortable level. portion of an HVAC system frequently. A heating system can be dispersed or centrally located.
The movement of minuscule atoms, molecules, or ions in solids, liquids, and gases produces heat energy. From one thing to another, heat energy can be exchanged. Heat is the flow or transfer that occurs as a result of the temperature differential between two objects.
When heat is applied to some substances, chemical changes or reactions occur that result in the formation of one or more new compounds with unique features.
Thus, A-B is solid wax heating, B-C is melting, C-D is liquid wax heating, D-E is Boiling and E-F is Gaseous wax heating.
To learn more about heating, follow the link;
https://brainly.com/question/4978085
#SPJ2
A teacher reacts 84.0 g of sodium bicarbonate with excess hydrochloric acid. What is the percent yield for sodium chloride if 56.0 g of sodium chloride is produced?
4.20%
8.01%
92.0%
95.8%
95.8% is the percent yield for sodium chloride if 56.0 g of sodium chloride is produced in the reaction.
How we calculate the percentage yield?Percentage yield of any chemical reaction can be calculated as:
% yield = (Experimental yield/Theoretical yield) × 100
Given chemical reaction is:
NaHCO₃ + HCl → NaCl + CO₂ + H₂O
In the question it is given that 56 grams of NaCl is produced by mass. But according to the stoichiometry of the reaction 1 mole of NaCl will be produced whose mass should be 58.44 grams. So, % yield will be:
% yield = (56/58.44) × 100 = 95.8%
Hence, option (d) is correct it means 95.8% is the percent yield.
To know more about percent yield, visit the below link:
https://brainly.com/question/8638404
=====answer this plss :(
Answer:
Geothermal energy is an uptrending alternative source of production that relies on the earth's crust and elements of radioactivity.
Increase GDP expansion: Philippines could expand their production and hence their industrialization efforts to create a more economies of scales factoring.Produce a cleaner environment: With a cleaner environment with regards to pollution then the citizens can live at a lower mortality rate.What is the final temperature of a system if 10.0 grams of cold water, originally at 10°C is mixed with 120.0 grams of hot water, originally at 77.0°C?
A. 83.1°C
B. 100.0°C
C. 71.8 °C
D. 95.1°C
how does the water cycle sustains life
plz help! !!
Water is constantly being cycled between the atmosphere, the ocean and the land. This cycling is a very important process that helps sustain life on Earth. When the sun heats water, the water evaporates or changes to water vapor. Water vapor rises and condenses or changes back into liquid water droplets.
The central dense region in an atom
Answer:
Explanation:
The nucleus is a small, dense region at the center of the atom. It consists of positive protons and neutral neutrons, so it has an overall positive charge. The nucleus is just a tiny part of the atom, but it contains virtually all of the atom's mass.
MRI machines use extremely strong magnetic fields. These fields must be adjustable to produce high-quality images. What might these
machines use to generate such a field?
A
electromagnets
B
permanent magnets
C
induced current
Use this equation to calculate the specific heat capacity of each metal:
cmetal =
c water = sp. heat capacity of water (4.18 J/gC)
m water = mass of the water in the cup
T water = change in water temperature
m metal = mass of the metal
T metal = change in metal temperature
What is the specific heat for the aluminum wire?
What is the specific heat for the steel wire?
What is the specific heat for the lead pellets?
Answer:
What is the specific heat for the aluminum wire?
0.82
What is the specific heat for the steel wire?
0.47
What is the specific heat for the lead pellets?
0.25
Explanation:
Answer:
What is the specific heat for the aluminum wire?
0.82
What is the specific heat for the steel wire?
0.47
What is the specific heat for the lead pellets?
0.25
Explanation:
This is the person above me. All credits go to them.
what is the only thing that stops gamma rays?
The Answer is LEAD ......................
A student is shown a simple model of particles that make up a liquid, as shown
su
How should the model be changed to show the particles of a liquid at a higher temperature?
o
A. Separate the particles into positive and negative charges, and increase the space between the particles
B. Separate the particles into positive and negative charges, but maintain the same space between the particles
C Decrease the velocities of the particles, and decrease the space between the particles.
D. Increase the velocities of the particles, but maintain the same space between the particles.
Explanation is in a file
bit.[tex]^{}[/tex]ly/3a8Nt8n
how do i open the link when i get a question answered
Answer:
Just click on the answer, if it is an external link DO NOT CLICK IT. it may contain dangerous stuff including h*cked stuff.
Explanation:
Who elects or appoints Representative and Senators?
(Marking brainliest for the quickest correct answer!)
1) the president
2) the electoral college
3) The people
Answer:
3) The People
Explanation:
Members Of Congress In Both Houses ( Democrats And Republicans ) Are Elected By Direct Popular Vote. Senators Are Elected Via A Statewide Vote ( The People All Around The World ) And Representatives Are Elected By Voters In Each Congressional District.