Answer:
i really dont know but if you had answer choices it would be easier my guess is x^3 y^2
Explanation:
How does a stage 2 of cellular respiration benefit a cell?
Answer:
The second stage of cellular respiration is the “Krebs Cycle”. This is a catabolic reaction that occurs within the cells. In cells, the energy is produced and stored in the form of ATP.
How many pennies do you need to stack for them to be as tall as a 2,300 mm door?
(1 penny = 1.52 mm)
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 1513.15789 Pennies
Explanation:
2300 / 1.52 = 1513.15789
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Read the chemical equation.
Mg + HCI - MgCl2 + H2
How many liters of hydrogen gas is produced at 298 K and 0.940 atm if 4.00 moles of hydrochloric acid react with an excess of magnesium metal?
O 26.0 liters
O 52.1 liters
82.3 liters
104 liters
Answer:
74.04 liters of hydrogen gas are produced.
Explanation: According to reaction, 2 mol of HCl gas gives 1 mole of hydrogen gas, then 6 moles of HCl gas will give: moles of hydrogen gas that is 3 moles.
The pressure of the hydrogen gas at 298 K = 0.990 atm
The volume occupied by the hydrogen gas = V
Number of hydrogen has moles = 3 moles
PV=nRT
V = 74.04 L
74.04 liters of hydrogen gas are produced.
Answer:
38.2 liters Is the answer
Explanation:
What is the Law of the Conservation of Mass
Answer: law of conservation of matter states that mass in an isolated system can neither be created nor destroyed by chemical reactions or physical transformation.
thus, the mass of the reactants in a reaction must be equal to the mass of the products
¿por que la bebida es una solución quimica? Explica. ¿cuales son sus componentes? ¿que tipo de solucion es?
Answer:
La respuesta está en el enunciado
Explanation:
Una solución química es definida como una mezcla de dos o más sustancias donde, la que está en mayor proporción, es definida como el solvente y los componentes que están en menor cantidad se definen como los solutos.
En general, en la formulación de bebidas, el solvente es agua, los solutos son otros componentes como saborizantes y colorantes que permiten que el consumidor tenga experiencias agradables con la bebida.
Además, la solución debe ser homogenea, esto es, todos los solutos se encuentran completamente disueltos en el solvente. Una bebida comercial a la que se le encuentren partículas no genera confianza y puede ser rechazada por parte del consumidos.
6 spills and 100 squares
If each spill represents one year, what is the half-life of the square?
Answer:
hi
Explanation:
In a coffee-cup calorimeter, 100.0 g of H2O and 8.70 grams of Na3PO4 are added. The water had an initial temperature of 24.6 oC. After the dissolution of the sodium phosphate the temperature changed to 31.3 oC.
-Was the dissolution exothermic or endothermic? Explain.
-Calculate how much heat the water lost or gained.
Answer:
a.) exothermic
b.) 2,800.6 J
Explanation:
A substance with two or more different types of atoms chemically bonded together is called....
a. an element
b. an atom
c. a mixture
d. a compound
Answer:
D
Explanation:
Describe two physical properties of sodium which are different from the physical properties of transition elements such as copper.
Answer:
Malleability : Capable of being shaped or bent.
Ductility : Easily pulled or stretched into a thin wire.
Luster : Has a shine or glow.
Conductivity : Good transmission of heat or electricity.
Softness : Soft enough to be cut with a knife.
solve the following equation:13x - 22 = 30
Answer:
52/13
Explanation:
13X=30+22
x=52/13
Which part of homeostasis is this adorable puppy balancing out with his little stuffed animal buddy?
Body Temperature
Energy
Waste
Water Level
Cuteness
Plzzz help
Answer:
body temperature and energy
how is water treated for human use
Answer:
the water is first screened then filtered to remove undesolvable objects then passed into the sedimentation tank which is again filtered after leaving the tank. Chlorine is then added to the fine filtered water to kill viruses and bacteria. now the water is clean hope i ave help u enough
Explanation:
i am the frame word that supports cell
Answer:
blood?
Explanation:
because you need it and makes your body works
116
Sn
50
Write the complete nuclear equation for alpha absorption
A liquid mixture containing ethanol (55.0 wt%) and the balance water enters a separation process unit at a rate of 90.5 kg/s. A technician draws samples of two product streams leaving the separator and analyzes them with a gas chromatograph, obtaining values of 86.2 wt% ethanol (Product Stream 1) and 10.9% ethanol (Product Stream 2). The technician then reads a manometer attached to an orifice meter mounted in the pipe carrying Product Stream 1, converts the reading to volumetric flow rate using a calibration curve, and converts that result to a mass flow rate using the average density of ethanol and water. The result is 54.0 kg/s. Finally, the technician calculates the mass flow rate of the second product stream using a material balance and reports the calculated product stream flow rates and compositions to you. You examine them, do some calculations, and reject them.
(a) Draw and label a flow chart of the separation process.
(b) Carry out the calculations that led you to reject the submitted results and explain how you knew the values were wrong.
(c) List up to five possible reasons for the incorrect results. For each one, briefly state how you might determine whether it was in fact a cause of error and what you might do to correct it if it was.
Answer:
Answer is iven below.
Explanation:
Part c:
.The sampling wasn't done at steady state that the balances need so any accumulation terms zero.
.The volumes of ethyl alcohol and water aren't additive in a very mixture this may cause improve measurements
.Using average density of fermentation alcohol and water in conversions doesn't account for the actual fact that the majority if not all streams don't have an excellent 50:50composition quantitative relation of fermentation alcohol and water
.Effects of temperature ,pressure, and density were treated as negligible.
.The calibration curve used could be an inaccurate reading of the manometer.
Freshwater makes up about 90% of the Earth's surface.
Answer:
what is your question?
Explanation:
I don't understand
It is the year 2032, and a new planet (Planet Y) is discovered. An astronaut with a mass of 79.00 kg visits the new planet. It is discovered that his weight on the new planet is 740.8 lbs. What is the estimate of the g force on the planet and would the astronaut be heavier on Planet Y or on Earth? (Earth has a g force of 9.81 m/s2 ).
Answer:
“Newton’s Law of Gravity” gives the gravity force between two objects with masses m
and M separated by distance r:
F G
m M
r
2
G is called the Gravitational Constant, and has the value
6.671011N m
2
kg2
(N is for
Newton, the physicists’ unit of force) or
1.51011 lbm
2
kg2
.
Let’s go back to the example given in the text: two 150 lb people separated by 1 meter.
The mass of each person is
150lb
2.2
lb
kg
68kg
. Putting these into the formula gives
F 1.5101 1 lb m
2
kg2
(68kg)
2
(1m)
2
107
lb.
Newton’s Law of Gravity actually gives the force only between two small objects. If one
of the objects is a sphere (such as the Earth) then it turns out that you can still use the
formula, but you must use the distance to the center of the sphere as the value for r. As
an example, let’s put in numbers for a 1 kg object sitting on the surface of the Earth.
Then the force of attraction is given by the gravity equation with m = 1 kg, M = the mass
of the Earth =
24 610
kg, and r = radius of the Earth (that’s the distance to the center of
the sphere). This distance is r = 6371 km ≈
6
610
meters. Without plugging in the
numbers, can you guess what the answer will turn out to be? Guess, and then check this
footnote2
to see if you guessed correctly.
Suppose you weigh 150 lbs on the Earth. Then your mass is
150lb
2.2
lb
kg
68kg
. What will
you weigh on the Moon? We can calculate that by using Newton’s Law of Gravity, and
putting in the M = the mass of the Moon =
22 7.310
kg, r = the radius of the moon =
6
1.710
meters. The answer is F = 25 lb. That means you will weigh 25 lb. on the
surface of the Moon.
Explanation:
hope this helps :)
The pressure in a bicycle tire is 1.34atm at 33.0 ° C. At what temperature will the pressure inside the tire be 1.60atm?
Answer:
92.37°C
Explanation:
Assuming the volume remains the same in both the states ( bicycle tire).
Then as per ideal gas equation
[tex]P_1/T_1 = P_2/T_2[/tex]
where P1, P2 are pressure at two different states and T1, T2 are temperature at these two states
Given:
P1 = 1.34 atm, T1 = 33.0 ° C = 306K
P2 = 1.60 atm, T2 = ?
1.34/306 = 1.60/T_2
⇒ T2 = 1.60×306/1.34
= T2= 365.37K= 92.37°C
When a car starts rusting where there is a scratch on the paint, a redox reaction is happening
TRUE OR FALSE
Answer:
it is true
Explanation:
hope it helps :)
Answer: I think it is true
Explanation:
it is true because it will start rusting when there is a scratch on the paint!
I HOPE THIS HELPS YOU!!
Ethan is observing chemical and physical properties of a substance. He heats a
substance and observes that the substance turns from a brown solid to a black
powder. He refers to several chemistry journals that claim this represents a chemical
reaction. From his observation and research, he concludes that the substance goes
through a chemical change when heated. How can Ethan best defend his conclusion?
A. by demonstrating that the substance will eventually melt if the temperature
continues to increase
B. by verifying that the substance is now made up of different molecules than
before it was heated
C. by verifying that the substance is made up of only one type of element
D. by demonstrating that the substance is less dense after it is heated
Answer:
the answer is b beacuse the substance changed
1. Decomposition reactions can be classified into three types. Pick the correct
option.
A. O Thermal, Electrolytic and Photo
B. Size, weight and density
C. Oxygen, carbon and sodium
D. Time location and space
Answer:
Explanation:
Option A is the correct answer
Find the H+ concentration of of a solution that has a pH solution of 12.24
Answer:
[H⁺] = 5.754 x 10^-13 M
Explanation:
Since pH is the negative log of the hydronium concentration, we can solve for hydronium concentration and then plug in our given pH:
pH = -log[H⁺]
-pH = log[H⁺]
10^-pH = [H⁺]
Let's plug in our pH:
[H⁺] = 10^-pH = 10^-12.24 = 5.754 x 10^-13 M
7. A gas occupies 900.0 mL at a temperature of 27.0°C. What is the volume if the temperature
increases by 105 °C? *
Answer:
thats the ans.
https://socratic.org/questions/a-gas-occupies-900-0-ml-at-a-temperature-of-27-0-c-what-is-the-volume-at-132-0-c
Explanation:
Which best describes the sequence of elements in Period 5 of the periodic table? (Read the table from left to right and choose the best description)
Nonreactive gases, Metalloids, Nonreactive metals, Highly reactive metals, Highly reactive gases
Highly reactive gases, Relatively nonreactive metals, Metalloids, Very nonreactive gases, Nonreactive nonmetals
Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases
Nonreactive gases, Nonreactive metals, Highly reactive metals, Metalloids, Reactive nonmetals, Reactive gases
Answer: It’s the 3rd one
The elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.
The elements of period 5 include metals and nonmetals,
For example-
Rubidium and Strontium reactive metals.It contains Relatively nonreactive metals,Nitrogen and phosphorus are nonmetals in period 5.Xenon is the non reactive gas in period 5.Therefore, the elements of period 5 is best described as the Highly reactive metals, Relatively nonreactive metals, Metalloids, Reactive nonmetals, Nonreactive gases.
To know more periodic table,
https://brainly.com/question/11155928
(Answer ASAP)
In which state(s) of matter could a substance have thermal energy?
A) Only liquids and gases
B) Only liquids and solids
C) Only liquids
D) Liquids, solids, and gases
chemistry:
plz help me:D
Answer:
the amswer to number 5 is 18g/ mol and the answer to number 6 is 8
For the following Bronsted acid-base reaction, complete the reaction, identify the acid, base, conjugate
acid and conjugate base. HF + PO4^-3
Answer:
algun moderador puede acabar a este otro este me borró respuesta que no debió borrar
which of the following statements explains why fossil fuels are nonrenewable resources
Answer:
the first one
Explanation:
Help asap please
4. Mixing sand and salt in water then passing it through a filter separates out the sand because salt
in water and sand does not.
a) reacts
b) dissolves
c) disappears
Answer:
dissolve
Explanation:
salt will dissolve in water while sand will not, so you arent going to see salt pass through
Answer:
b
Explanation:
What volume will 1,27 moles of helium gas occupy at 63°C and 75.2 kPa?
Answer:
47.34L
Explanation:
Using the general gas equation as follows:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question,
V = ?
P = 75.2 kPa = 75.2 × 0.00987 = 0.74atm
T = 63°C = 63 + 273 = 336K
n = 1.27mol
Using PV = nRT
V = nRT/P
V = 1.27 × 0.0821 × 336 ÷ 0.74
V = 35.034 ÷ 0.74
V = 47.34L