D is a green crystalline solid that dissolves in water to give a very pale green solution addition of sodium hydroxide solution to a solution of D
Answer:
I think its iron(II) oxide
Explanation:
The substance is black but when it's mixed with water it turns green solution so when mixed with sodium Hydroxide it turns green
How many liters are in 1576.94 mL?
Answer:
1.57694 L
Explanation:
To convert from mL to L, you simply divide the value by 1000.
Part B
DIRECTIONS: Identify the type of heat transfer depicted in each picture by arranging the
jumbled letters and answer the questions that follows.
Answer:
1. conduction
2. Convection
3. Radiation
If a car speeds up from 80km/hr to 110km/hr to pass another vehicle in 1.5 min (0.025hrs), what is their acceleration?
Answer: uhhhh im pretty sure the answer is 69m/hr
Explanation:
Please help! This is for the 9.06 Acid Neutralization Lab! Due today!
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hi there bestie [i think its 3]
copper oxide + hydrochloric acid →
Answer:
copper oxide + hydrochloric acid --> copper chloride + water
Explanation:
Thenks and mark me brainliest :))
Answer:
Copper oxide hydrochloric acid ( CuCl2 + H2O)
Explanation:
CuO + HCl → CuCl2 + H2O
Na2O H2 --> 2Na H2O A student performed the above reaction in the lab, and obtained an actual yield of 3.9 grams of H2O. He calculated a theoretical value of 4.2 grams of H2O. Calculate the percent yield of the reaction.
Answer:
Percentage yield = 92.86%
Explanation:
We are given;
Actual yield = 3.9 grams
Theoretical yield = 4.2 grams
Formula for percent yield is;
% yield = (actual yield/theoretical yield) × 100%
Thus;
% yield = (3.9/4.2) × 100%
% yield = 92.86%
Define diffusion. Diffusion is the spreading of gas particles into a ---Select--- area as they intermingle with particles of other gases. (b) Describe kinetic-molecular theory. Kinetic-molecular theory relates the kinetic energy of gas particles to their motion. The theory visualizes gas particles as concrete, constantly-moving spheres that are ---Select--- changing direction as a result of frequent ---Select--- collisions with other gas particles. (c) Predict how factors that influence the kinetic energy of gas particles affect the rate of diffusion. The rate of gas diffusion is ---Select--- proportional to temperature because a higher temperature means a/an ---Select--- in the kinetic energy of molecules. The rate of gas diffusion is ---Select--- proportional to the molecular weight of the gas because gas particles with higher masses require ---Select--- energy to move compared to gas particles with lower masses.
Answer:
A. Diffusion is the spreading of gas particles into a larger area as they intermingle with particles of other gases. In diffusion of gases, moleculesof gases concentrated in a particular area or region spread out to larger areas until they are evenly distributed.
B. Kinetic-molecular theory relates the kinetic energy of gas particles to their motion. The theory visualizes gas particles as concrete, constantly-moving spheres that are constantly changing direction as a result of frequent elastic collisions with other gas particles. The average kinetic energy of the gas molecules is directly proportional to the gas' absolute temperature.
C. The rate of gas diffusion is directly proportional to temperature because a higher temperature means a/an increase in the kinetic energy of molecules. The rate of gas diffusion is inversely proportional to the molecular weight of the gas because gas particles with higher masses require greater energy to move compared to gas particles with lower masses.
Explanation:
Define diffusion.
Diffusion is the spreading of gas particles into a larger area as they intermingle with particles of other gases. In diffusion of gases, moleculesof gases concentrated in a particular area or region spread out to larger areas until they are evenly distributed. For example, the smell of a rotten egg spreads out from the source to a larger area through the process of diffusion.
(b) Describe kinetic-molecular theory.
Kinetic-molecular theory relates the kinetic energy of gas particles to their motion. The theory visualizes gas particles as concrete, constantly-moving spheres that are constantly changing direction as a result of frequent elastic collisions with other gas particles. The average kinetic energy of the gas molecules is directly proportional to the gas' absolute temperature.
(c) Predict how factors that influence the kinetic energy of gas particles affect the rate of diffusion.
The rate of gas diffusion is directly proportional to temperature because a higher temperature means a/an increase in the kinetic energy of molecules. The rate of gas diffusion is inversely proportional to the molecular weight of the gas because gas particles with higher masses require greater energy to move compared to gas particles with lower masses.
What is the pH of a solution of HCL with a concentration of
5 x 10^-4
what is A magnet?Write its uses.
Answer:
Magnets are used to make a tight seal on the doors to refrigerators and freezers. They power speakers in stereos, earphones, and televisions. Magnets are used to store data in computers, and are important in scanning machines called MRIs (magnetic resonance imagers), which doctors use to look inside people's bodies.
PLEASE MARK ME A BRAINLIST
explain how soil can affect the composition of the solution that move through it
Answer: Soils are formed through the interaction of five major factors: time, climate, parent material, topography and relief, and organisms.
Soil structure affects plant growth in many, often surprising, ways. The most obvious effects are on root growth, which is strongly inhibited by hard soil, and which in turn influences the ability of the root system to extract adequate water and nutrients from the soil.
Explanation:
https://www.publish.csiro.au/sr/pdf/SR9910717
This is where I gather some info.
Complete them with correct formulas
Then balance them
Answer:
1. 2Ca + N[tex]_{2}[/tex] → 2CaN
2. 4Li + O[tex]_{2}[/tex] → 2Li[tex]_{2}[/tex]O
3. 2KCl + BaF[tex]_2[/tex] → 2KF + BaCl[tex]_2[/tex]
4. CH[tex]_4[/tex] + 2O[tex]_2[/tex] → CO[tex]_2[/tex] + 2H[tex]_2[/tex]O
Be sure to balance the number of atoms on both sides of each equation only by adding coefficients to the compounds!!!! Those without a coefficient are meant to have a coefficient of 1.
calculate the mols of alt gas if the volume is 0.97 liters at a temperature of 12 C and the pressure is 152 Kpa’s
Answer:
0.062mol
Explanation:
Using ideal gas law as follows;
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821Latm/molK)
T = temperature (K)
Based on the information provided;
P = 152 Kpa = 152/101 = 1.50atm
V = 0.97L
n = ?
T = 12°C = 12 + 273 = 285K
Using PV = nRT
n = PV/RT
n = (1.5 × 0.97) ÷ (0.0821 × 285)
n = 1.455 ÷ 23.39
n = 0.062mol
Intravenous saline solutions are often administered to patients in the hospital. Normal saline solution containers has a concentration of 0.20 M and a volume of 0.10L of solution. How many moles of sodium chloride were dissolved? *
2 points
0.02 mol
2.0 mol
0.5 mol
5 mol
0.02 mol NaCl
Explanation:
(0.2M NaCl)×(0.10 L) = 0.02 mol NaCl
Which of the following describes an impact of the specific heat of water on the planet?
Answer:
A.
Explanation:
specific heat of water is immense as compared to most of other known substances. The result of this characteristic is that water heats slowly and cools slowly. In coastal region and islands, the air above lands gets heated up quickly as compared to air above water.
The impact of the specific heat of water on the planet is that air above the ocean not easily gets heated.
What is specific heat?Specific heat is define as the amount of heat needed to increase the one unit temperature of one gram of the substance.
Specific heat of water is equal to 1 calorie and it is that much of high as water will require a lot of energy to change its temperature, and not easily gets cool or warm. Due to this water of the oceans almost have the same temperature and air above the ocean not easilt gets warmer as comapre to the air over the coastal area.
Hence, impact of the specific heat of water on the planet explained above.
To know more about Specific heat, visit the below link:
https://brainly.com/question/1768769
Once you have completed a correct water cycle, include a paragraph summary of the process, and how certain steps of the process may affect you.Write your answer in the essay box below.
Answer:
That fresh water hydrates the carbon-based lifeforms on earth. But through evaporation, and transpiration from plants leaf surfaces, it gets back into the atmosphere to feed clouds for the next rainfall. The cycling of liquid water and returning vapor creates our climate and our living environment.
Explanation:
The summary of the water cycle process is given below.
What are the important steps in water cycle?The water cycle shows the continuous movement of water within the Earth and atmosphere. It is a complex system that includes many different processes. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow.
Water in different phases moves through the atmosphere (transportation). Liquid water flows across land (runoff), into the ground (infiltration and percolation), and through the ground (groundwater).
Groundwater moves into plants (plant uptake) and evaporates from plants into the atmosphere (transpiration). Solid ice and snow can turn directly into gas (sublimation). The opposite can also take place when water vapor becomes solid (deposition).
Therefore, The summary of the water cycle has been explained.
Learn more about water cycle here:
https://brainly.com/question/31195929
#SPJ2
A helium balloon with an internal pressure of 1.25 atm and a volume of 3.50 L at 25.00 C
is released. What volume will the balloon occupy at an altitude where the pressure is
0.800 atm and the temperature is -30.00 C?
In a calorimetry experiment the water absorbs 273 J of heat (q), how much heat (q) is released by the metal if no heat is lost? Remember: -qreleased = qabsorbed ANS: _____ kJ/mol
Answer:
qreleased = -273J.
Explanation:
Hello there!
In this case, according to this calorimetry question, and keeping in mind that the hot substance releases heat to the cold substance which absorbs it, according to:
-qreleased = qabsorbed
In such a wat, since the water absorbs 273 J of heat and no heat is lost, the amount of this measurement released by the metal is:
-qreleased = 273J
qreleased = -273J
Regards!
In the reaction below, how much heat is needed to make 2.00 moles of Cl2 gas?
PCl5(s) + 87.9k)→ PCl3(g) + Cl2(g)
a. 44.0kJ
b. 87.9kJ
c. 176kJ
d. 352kJ
Answer:c
Explanation:
Which occurs within a high pressure system?
Answer:
A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure. Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator.
Answer:
Dense air is pushed downwards towards the surface. since the air is being pushed down the air above spreads and thats when "fair wheather" happens.
Explanation:
Hope that helped!
hello, can someone help? i’ve been stuck on this for a few days... it will be greatly appreciated if u help T-T thanks in advance
Answer:
A
B
C
Explanation:
Remark
Delta H is put on the reactant side of the equation. If delta H is plus the reaction goes to the right. If anything causes delta H to decrease, the reaction shifts left when delta H is originally negative.
One
Delta H is positive which means that heat has to be added before the reaction can take place. If the temperature decreases, then H2 will decrease because delta H is fighting off the temperature decrease The answer is A
Two
Pressure decreases. The side (left or right) with the most number of moles will be favored. The left side has 2 moles. The right side has 4 moles. The right side is favored. Answer: B
Three
The concentration of NH3 increases. That will increase the products. H2 increases. Answer C
What kind of reaction shows two reactants combining to form one new product?
What kind of reaction shows two reactants combining to form one new product?
A) a single-replacement reaction
B) a double-replacement reaction
C) a decomposition reaction
D) a synthesis reaction
In your OWN words, what is the difference between a solute, solvent and solution?
Answer:
could u all help me??
Who was Agamemnon trying to persuade to come fight with him again?
Patroclus
Achilles
Odysseus
Hector
Explanation:
What is the new pressure of 150 mL of a gas that is compressed to 50 mL when the original pressure was 3.0 ATM and the temperature is held constant
Answer:
[tex]\boxed {\boxed {\sf P_2= 9 \ atm}}[/tex]
Explanation:
Since the temperature is held constant, we only need to focus on the volume and pressure. We will use Boyle's Law, which states the volume of a gas is inversely proportional to the pressure. The formula is:
[tex]P_1V_1=P_2V_2[/tex]
Originally, the gas had a volume of 150 milliliters and a pressure of 3.0 atmospheres. We can substitute these values into the left side of the equation.
[tex]3.0 \ atm * 150 \ mL = P_2V_2[/tex]
The original gas was compressed to a volume of 50 milliliters, but we don't know the volume.
[tex]3.0 \ atm *150 \ mL= P_2 * 50 \ mL[/tex]
Now, we need to solve for the new pressure (P₂). Multiply on the left side first.
[tex]450 \ atm*mL= P_2 * 50 \ mL[/tex]
Since we are solving for the pressure, we need to isolate the variable. It is being multiplied by 50 mL. The inverse of multiplication is division. Divide both sides by 50 mL.
[tex]\frac{450 \ atm*mL}{50 \ mL}= \frac{P_2 * 50 \ mL}{50 \ mL}[/tex]
[tex]\frac{450 \ atm*mL}{50 \ mL}= P_2[/tex]
The units of milliliters will cancel.
[tex]\frac{450 \ atm}{50 }= P_2[/tex]
[tex]9 \ atm =P_2[/tex]
The new pressure is 9 atmospheres.
3. Svante Arrhenius developed a definition of acids and bases
which stated...
A. acids produce OH+ ions and bases produce H ions
B. acids produce H+ ions and bases produce OH ions
STAT
C. acids and bases are the same
D. acids have a high pH and bases have a low pH
pls help
btw any links will be reported.
2. What is the best way to test a hypothesis?
O by conducting research
by designing and performing an experiment
by designing an experiment
O by making an educated guess
Answer:
by designing and performing an experiment
Explanation:
This is because hypothesis refer to a guess or explanation that is made base on limited evidence and it is proposed for further experiment.
The best way to know whether your hypothesis is true is to design and conduct an experiment. When this is done, the outcome will determine whether the hypothesis is true and valid or not.
what is Gay lussac's law
Explanation:
Gay-Lussac's law states that the pressure of a given mass of gas varies directly with the absolute temperature of the gas when the volume is kept constant. Mathematically, it can be written as: {\displaystyle {\frac {P}{T}}=k}. It is a special case of the ideal gas law.
A gas occupies 4.21 Iiters at a pressure 1 074 atm. What will its volume be if the pressure is decreased to 0.46 atm?
Answer:
15.9 Liters
Explanation:
according to Boyle's law P1V1 = P2V2
so we just plug in the values the problem gives us and solve for V2
(1.74)(4.21)=(.46)(V2)
V2 = 15.9 Liters
*note - there is a typo in your question when you states P1 = 1 074 atm. I just assumed you meant 1.74, if this is a mistake just replace 1.74 with the real P1 and solve it as shown above
if you have any questions just comment them below
Which of the following statements correctly describes a kingdom in the Domain
Eukarya?
A Kingdom Protista includes single-celled organisms that lack nuclei.
B Kingdom Animalia includes multicellular organisms that make their own food.
C Kingdom Plantae includes multicellular organisms that can move independently.
D Kingdom Fungi includes organisms that get energy by absorbing materials in their
environment.
Answer:
D. Kingdom Fungi includes organisms that get energy by absorbing materials in their environment.
Explanation:
Organisms in the domain Eukarya are characterized by the possession of a well defined NUCLEUS in their cells. Kingdoms in this domain include animalia, plantae and fungi.
- Kingdom animalia contains multicellular organisms that are strictly heterotrophic i.e. cannot synthesize their own food, hence, rely on other organisms for nutrition.
- Kingdom plantae contains multicellular organisms that are capable of movement but not independently i.e. they cannot move from their fixed positions.
- Kingdom Fungi includes organisms that get energy by absorbing materials in their environment via a structure called MYCELIUM.
what is the specific heat of a 150g metal that gives off 700J of heat upon cooling from 54 to 32 degrees C
Answer:
-0.21 if you're using C as your temperature.
0.018 if you're using K as your temperature.
Explanation:
This is similar to your other question, where we'll be using the formula for specific heat capacity: Q=mcΔT
Q = heat energy (Joules)
m = mass (g)
c = specific heat capacity > What we're solving for.
ΔT = change in temperature > final temp. - initial temp.
It would be helpful to know the units so you'll know what type of problem you're dealing with and what formula you should use. But you'll usually use this formula if they mention the specific heat of an material.
Let's plug in what we know.
700= (150)(c)(32-54)
700= (150)(c)(-22) we want to solve for c, to make it easier let's multiply the numbers on the right side so we'll have...
700=-3300c
Solve for c.
[tex]\frac{700}{-3300}[/tex] = c
-0.21 = c
This is in C though, your depending on your teacher they might want you to convert C to Kelvin (K). So Here is what it would be if it was in Kelvin.
700= (150)(c)(251)
700=37650c
0.018=c