Actuating mechanism is the dry-chemical fixed application method which
introduces a concentration of agent into a closed area.
The actuating mechanism is commonly used in piping systems and
involves the transport of a control member in automatic or remote control
systems.
The closed system makes manual navigation very difficult which is why the
actuating mechanism in automatic systems are usually used to make it less
tedious and accurate.
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Which statement did Kepler’s investigations of the movement of the planets explain?
Gravity acts on all objects in the universe.
Jupiter has more moons than earth.
Earth is not the center of the universe.
The sun is more massive than earth.
assume you are performing the calibration step of experiment 8 and you begin with 80 g of water at 20 oc and 80 g of water at 80 oc. after adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45 oc. what is the heat capacity of the calorimeter?
The heat capacity of the calorimeter is 133.76 J°/C.
A calorimeter is an apparatus employed when estimating the amount of heat required in a chemical reaction.
For the given calorimetric function:
the heat lost by the hot water = to the heat gained by the cold water and the calorimeter.These can be computed mathematically as:
[tex]\mathbf{m_wC_w\Delta \theta _w = m_cC_c\Delta \theta _c + C_{cal} \Delta_c}[/tex]
[tex]\mathbf{80 \ g\times 4.18 J/g^0 C \times (80-45)^0 \ C = 80 g \times 4.18\ J/g^0 \ \times (45- 20)^0 +C_{cal} \times (45- 20)^0 \ C}[/tex]
[tex]\mathbf{11704 \ J =8360 \ J+C_{cal} \times (25)^0 \ C}[/tex]
[tex]\mathbf{(11704 -8360) \ J= C_{cal} \times (25)^0 \ C}[/tex]
[tex]\mathbf{ C_{cal} = \dfrac{3344 \ J} { (25)^0 \ C}}[/tex]
[tex]\mathbf{ C_{cal} =133.76 \ J/^0 C}[/tex]
Therefore, the heat capacity of the calorimeter is 133.76 J°/C.
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What is the acceleration of a 10 kg pushed by a 5N force
Answer:
0.5 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{5}{10} = \frac{1}{2} = 0.5 \\ [/tex]
We have the final answer as
0.5 m/s²Hope this helps you
IS N2 (diatomic molecule of nitrogen considered a chemical compound can it be split into two or more simpler substances?
400.0 mL of a 0.425 M solution of NaCl is diluted to 900.0 mL. What is the new concentration of the solution
The new concentration of the solution that has 400.0 mL of a 0.425 M solution of NaCl diluted to 900.0 mL is 0.189M
HOW TO CALCULATE CONCENTRATION:
The concentration of a diluted solution can be calculated using the following formula:C1V1 = C2V2
Where;
C1 = initial concentrationC2 = final concentrationV1 = initial volumeV2 = final volumeAccording to this question, a solution of NaCl has 400.0 mL of a 0.425 M solution and diluted to 900.0 mL. The new concentration is as follows:400 × 0.425 = 900 × C2
170 = 900C2
C2 = 170 ÷ 900
C2 = 0.189M
Therefore, the new concentration of the solution that has 400.0 mL of a 0.425 M solution of NaCl diluted to 900.0 mL is 0.189M.Learn more at: https://brainly.com/question/8795644?referrer=searchResults
Question 7 (1 point)
Which of the following organelles helps organisms maintain homeostasis by controlling what substances may enter or leave cells?
Answer:
Cell membranes (plasma membranes) help organisms maintain homeostasis by controlling what substances may enter or leave cells.
Calculate the molecular mass of the element
They give:H=1,AI=27,S=32,0=16,Cu=64,P=31,Mg=24,N=14,Na=23
Answer:
Na2SO4
2×23 + 32 + 4×16
46 + 32 +64
=142g
can someone help me with this
Answer: 5. Positive
6. Negative
9. Oxygen carbon hydrogen nitrogen
Explanation:
If water turns deep red with a few drops of potassium thiocyanate, what cation is likely present?.
Answer:
Fe3^+
[tex]fe3 ^{ + } [/tex]
blank are produced when atoms if the elements in group 7A blank an electron
Answer:
Halide ions are produced when atoms of elements in Group 7A gain an electron.
Explanation:
if the column of water in the water barometer rose to a height of 36 feet, what would the atmospheric pressure be in mm hg?
The Atmospheric pressure is usually constant and is; 760mm Hg.
According bro the question;
The column of water in the water barometer rose to a height of 36 feet.The absolute pressure is given as;
P(abs) = P(atm) + P(gauge)The gauge pressure is dependent on the height of the water column.
Ultimately, the atmospheric pressure is constant and is given as; 760mm Hg.
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HURRY for a BRAINLIST
Answer:
B
Explanation:
Answer:
answers
B
Explanation:
Explicaciónexplicacaca
How to determine intermolecular forces.
Answer:
Incase you have H and F and another H and F
What is infrared energy? simplify it
Answer:
It is a type of radiant energy that's invisible to human eyes but that we can feel as heat.
Distinguish between the first, second, and third ionization energies of an atom. b. How do the values of successive ionization energies compare
Answer:
The third ionization energy is the energy it takes to remove an electron from a 2+ ion. (That means that the atom has already lost two electrons, you are now removing the third.) And 2nd ionization energy is higher than 1st ionization energy, 3rd is higher than 2nd, and so forth.
hope it is helpful :)
Someone know the answer for that question
An aqueous solution of nitrous acid hno2 has a ph of 1. 96. The ionization constant of this acid is 5. 0 × 10−4. How much nitrous acid was used to prepare one liter of this solution?.
The number of moles of nitrous acid used to prepare the solution is 0.0021 moles.
pH of the HNO2 solution = 1. 96
Concentration of the HNO2 solution = Antilog(-1.96) = 0.011 M
We have to set up the ICE table as follows;
HNO2(aq) ⇄ H^+(aq) + NO2^-(aq)
I 0.011 0 0
C -x +x +x
E 0.011 - x x x
The dissociation constant of the acid is 5.0 × 10−4
Hence;
5.0 × 10−4 = x^2/ 0.011 - x
5.0 × 10−4(0.011 - x ) = x^2
5.5 × 10^-6 - 5.0 × 10^-4x = x^2
x^2 + 5.0 × 10^-4x - 5.5 × 10^-6 = 0
x= 0.0021 M
The concentration of the acid (H^+) in the solution is 0.0021 M. The number of moles of the acid is obtained from;
0.0021 M × 1 L = 0.0021 moles
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which best represents the number of moles in exactly 130 grams of potassium metal?
Answer:
if by EXACTLY means 130.0000, then the answer is 3.3250
by EXACTLY means 1.299 <Kmass<1.301 then the answer is 3.33
EXPLANATION
which best represents the number of moles in exactly 130 grams of potassium metal?
the elemental mass of K is 39.098
so exactly 130 divided by 39.098 = 3.3250
if by EXACTLY means 130.0000, then the solution is 3.3250 by EXACTLY means 1.299 <Kmass<1.301 is 3.33
What is Potassium Metal?
Potassium metal responds rapidly with atmospheric oxygen to create flaky white potassium peroxide in exclusively moments of exposure.
It stood preferably isolated from potash, the ashes of plants, from which its appellation derives.
In the systematic table, potassium is one of the alkali metals, all of which have a single valence electron in the outermost electron shell,
That is easily drawn to produce an ion with a positive charge a cation, that connects with anions to form salts. Potassium in disposition materializes only in ionic salts.
When the elementary mass of K is 39.098
Therefore, exactly 130 divided by 39.098 is = 3.3250
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Please help? It’s for chem
Answer:
O-H
Explanation:
It is polar covalent bond, because the hydrogen atom has electronegativity about 2.6, and the oxygen atom, electronegativity about 3.6. When the difference in electronegativity of the atoms is between 0.4 and 1.7, the result is a polar covalent bond.
Which polymer structure should be used if a strong and heat - resistant adhesive is required?
1. Linear
2. Branched
3. Networked
4 . Cross - linked
Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.
A polymer is obtained by the combination of small molecules called monomers. A polymer consists of a regular repeating unit of small molecules called monomers.
A cross-linked polymer is a polymer in which covalent bonds are used to join polymer chains together. Cross-linked polymers are strong and heat - resistant hence they can be used for this purpose.
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A compound contains 36.48% Na, 25.41% S, and 38.11% O. Find it’s empirical formula
Answer:
we can use 100g of compounds as the basis.
Explanation:
Help please I promise this time I will mark whoever answers correctly first please
10 grams
mass does not change when cooking the egg
4. One gram of of ............... contains one type of atoms. a. iron b. ammonia c. hydrogen chloride d. water
Answer: hydrogen chloride.
Explanation:
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Ivan has decided that he is going to work on having a more positive body image. What result should he hope for?
A.
He should feel good about his body and accept any flaws.
B.
He should look for compliments from friends and family about his body.
C.
He should love everything about his body and think he is very attractive.
D.
He should be happy with himself after following a strict diet and exercise routine.
PLEASE NO LINKS
Answer:
D
Explanation:
Hope it helps
The result he hope for he should be happy with himself after following a strict diet and exercise routine.
What is fitness?Fitness is defined as to be able to go about one's everyday activities without difficulty, without getting exhausted, and with enough energy to spare for leisure. Body composition, flexibility, muscular strength, muscular endurance, and cardiorespiratory endurance are the five facets of physical fitness. Physical activity can strengthen your bones and muscles, help you maintain a healthy weight, increase your ability to carry out daily tasks, and improve your cognitive health.
Exercise is defined as a bodily action that maintains or improves physical health and wellness overall. Exercise science is a field that investigates movement as well as the corresponding functional reactions and adaptations.
Thus, the result he hope for he should be happy with himself after following a strict diet and exercise routine.
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#SPJ2
if your going down a hill what type of energy are you making?
Answer:
Gravitational potential energy - into Kinetic energy
Explanation:
When light waves pass through solids, the speed of the wave ___________.
remains the same
decreases
increases
It woukd decrease.
I am sure its correct you can trust me becuase I took the test.
Answer:
The speed of the wave decreases.
Explanation:
When light waves do pass through a medium, any solid, liquid, or gas, the speed of the waves actually decreases. Solids are more dense than liquids, so they decrease the speed of light even more.
(I did the quiz btw!!)
What is carbon? What does it do?
How does transfer of infrared energy relate to weather and climate conditions on Earth?
Answer:
Convection is the transfer of heat energy in a fluid. Air in the atmosphere acts as a fluid. The sun's radiation strikes the ground, thus warming the rocks. As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air.
What has more atoms, a mole of carbon or a mole of fluorine?
A mole of carbon
A mole of Florine
They have the same number of atoms
Answer:
They have the same number of atoms
Explanation:
The mole (symbol: mol) is the base unit of amount of substance.
Think of mole meaning like inch. An inch of grass is the same as an inch of a flower. Mole is the standard measuring unit of atoms.
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CaOCl2 parent acid and base???
Answer:
this is not and reaction of acid and base.(CaOCL2)
Explanation:
Ca2, Cl, are base and O is a neutral.
so how can that be a acid and base reaction