Energy comes in various forms. Which is not an energy form?
A.Heat
B.Mechanical
C.Solar
D.Cellular

Answer:

69.2°C

Explanation:

Recall the heat energy formula

q = cmΔT

where q = heat energy ( measured in joules ) , c = specific heat , m = mass and ΔT = change in temperature.

We are given that:

Given this we want to find the temperature change.

First we want to define our variables.

Again recall that heat energy (q) = 450J , mass(m) = 50g and specific heat (c) = 0.13 J/g(degC)

Now that we have defined our variables we plug in the values of the variables into q = cmΔT and solve  for the undefined variable

q = cmΔT

q = 450 , m = 50, c = 0.13

450 = (50) x (0.13) x (ΔT)

multiply 50 and .13

450 = 6.5 x (ΔT)

divide both sides by 6.5

69.2 = ΔT

The change in temperature was 69.2°C

Answer

KCl will react with Ba(NO3)2 to form BaCl2 and KNO3, but both are soluble so no precipitate will form.

Yes, a precipitate does form when aqueous solutions of barium bromide and potassium chloride are mixed. The precipitate that forms is barium chloride, with the empirical formula BaCl2.

Here is the step-by-step explanation of how this reaction occurs:

1. When barium bromide (BaBr2) and potassium chloride (KCl) are mixed in aqueous solution, the barium ions (Ba2+) and bromide ions (Br-) from the barium bromide will dissociate, as will the potassium ions (K+) and chloride ions (Cl-) from the potassium chloride.

2. The barium ions (Ba2+) will then combine with the chloride ions (Cl-) to form barium chloride (BaCl2), which is a solid and will precipitate out of the solution.

3. The potassium ions (K+) and bromide ions (Br-) will remain in solution and will not form a precipitate.

So, the overall reaction can be written as:

BaBr2 (aq) + 2 KCl (aq) → BaCl2 (s) + 2 KBr (aq)

The empirical formula of the precipitate is BaCl2.

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The volume of the gas is 5.32 cm³.

To calculate the volume of the gas, we use Charles' law.

Charles' law states that at constant pressure, the volume of a fixed mass of gas is directly proportional to its absolute temperature. This can be expressed mathematically as

Formula:

Where:

Make V' the subject of the equation.

From the question,

Given:

Substitute these values into equation 2

Hence, the volume of the gas is 5.32 cm³.

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Answer:

162

Explanation:

(45/ 1000)*3600

=162

The volume of CO₂ generated under condition of STP in the reaction :

CaCO₃   +  2HCl   ----->   CaCl₂   +   H₂O   +   CO₂ is  12.5 mL.

The reaction is given as :

CaCO₃   +  2HCl   ----->   CaCl₂   +   H₂O   +   CO₂
mass of CaCO₃  = 750 mg = 0.75 g

molarity of HCl = 0.100 M

volume of HCl = 25 mL = 0.025 L

moles of CaCO₃  = 0.75 / 100

                            = 0.0075 mol

moles of HCl = 0.100 × 0.025

                       = 0.0025 mol

here HCl is limiting reagent , formation of CO₂ depends on HCl

2 moles of HCl = 1 mole of CO₂

0.0025 mol of HCl = 0.0025 / 2

                               = 0.00125 mol

volume of CO₂ = moles / molarity

                          = 0.00125 / 0.100

                         = 0.0125 L = 12.5 mL

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Feldman and Frydman consider molecular chaperones critical for protein folding because they play crucial roles in ensuring proper folding and preventing protein misfolding and aggregation.

One specific example is the chaperone Hsp70. Hsp70 binds to hydrophobic regions of unfolded or misfolded proteins, preventing their aggregation and assisting in their correct folding. Hsp70 accomplishes this by utilizing ATP hydrolysis to undergo conformational changes that allow it to bind to client proteins and facilitate their folding. Without Hsp70, misfolded proteins could aggregate and form toxic species associated with various diseases, such as neurodegenerative disorders.

Another example is the chaperonin GroEL/GroES system. GroEL is a large, multi-subunit complex that provides a confined environment for the folding of newly synthesized or stress-denatured proteins. GroES acts as a lid, enclosing the substrate protein within the GroEL cavity. The GroEL/GroES system facilitates protein folding by preventing misfolding and promoting proper folding through cycles of substrate binding and release. This chaperonin system is essential for the folding of many proteins, including enzymes involved in critical cellular processes.

Overall, molecular chaperones like Hsp70 and the GroEL/GroES system are crucial for protein folding because they help prevent protein misfolding, promote correct folding, and protect against protein aggregation, ensuring proper protein function and maintaining cellular homeostasis.

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A reflex arc consists of only one synapse between a sensory neuron and a motor neuron. This allows for a rapid, involuntary response to a stimulus without involving higher brain centers.

A reflex arc is a neural pathway that controls reflexive actions in the body. It bypasses the brain and spinal cord's involvement, allowing for a quick and automatic response to a stimulus.

In some reflex arcs, there is only one synapse between the sensory neuron and the motor neuron. This means that the sensory information received by the sensory neuron is relayed directly to the motor neuron with only one connection point, or synapse, in between.

This single synapse allows for a rapid transmission of the nerve impulse, minimizing the delay in executing the reflexive response.

The absence of involvement from higher brain centers in a reflex arc allows for a quicker response time because the signal doesn't need to travel to the brain for processing and decision-making.

Instead, the reflex arc allows for an automatic response that is essential for our survival and protection, such as pulling away from a hot object or blinking in response to a sudden bright light.

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Complete question - Reflex arc consists of only one synapse between two neurons. Explain

Answer:

A.

Explanation:

PO WATER,AIR,WIND

Answer:

I think A and B

Explanation:

Answer:

A. & B.

Explanation:

Neither can be broken down into something besides an atom, the "purest" form matter can exist in. For example, if you were to break down C6H12O6 (glucose), you wouldn't be able to break down a singular atom of carbon into something different.

A chemist experiments on a molecule with the formula of c5h10o5. this compound is likely a(n)  carbohydrates.

A molecule with the formula C₅H₁₀O₅  is carbohydrates.

What are Carbohydrates?

therefore the molecular method C₅H₁₀O₅ represents carbohydrates.

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1000 grams of nitroglycerin 2% ointment should be mixed with the ointment base to obtain 100 grams of an ointment with a concentration of 0.2%.

To determine the amount of nitroglycerin 2% ointment needed to mix with an ointment base to obtain 100 grams of an ointment with a concentration of 0.2%, we can use the concept of a proportion.

Let's set up the proportion:

(grams of nitroglycerin 2% ointment) / 2% = 100 grams / 0.2%

To solve for the grams of nitroglycerin 2% ointment, we can cross-multiply and then divide:

(grams of nitroglycerin 2% ointment) = (2% / 0.2%) * 100 grams

Calculating the right side of the equation:

(grams of nitroglycerin 2% ointment) = (2 / 0.2) * 100 grams

                                = 10 * 100 grams

                                = 1000 grams

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Answer: The equilibrium will shift to the left.

False; after coming into contact with metal cations, methylene blue solution leaches out of the lichens. Because they can accept electrons, metal cations are very electronegative.

Methylene, often known as carbene, is an organic molecule having the chemical formula CH 2 that is also formally known as methylidene and hydrocarbon (also written [CH 2]). It is a colourless gas that only persists in diluted form or as an adduct, fluorescing in the mid-infrared range. The most fundamental carbene is methylene.

A lichen is a symbiotic association between many organisms, such as a cyanobacterium or an algae. In addition to being unique from algae, cyanobacteria are also known as blue-green lichen.

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Answer:

Snail- Invertebrates

Earthworm- Invertebrates

Cockroach- Vertebrates

Butterfly-Vertebrates

Snake- Invertebrates

Explanation:

I don't know

Answer:

it expands

Explanation:

this is because when it get warmer it runs out of room and makes it got up the tube.

Yes, igneous rock become sedimentary rock through a process called sedimentation.

In sedimentation, An igneous rock is broken down or crushed into little piece of rock called sediment, the sediment is then packed together as a result of othe rocks or strong forces, that form together to make a Sedimentary rock.

Conclusively, The process of erosion, heat and depositing rock grains which can also be known as sedimentation can alter or change igneous rock into sedimentary rock.

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Of the species listed, \(NH_4^{+}, OH^-, and H_3O^+\) will be present at the greatest concentrations when \(NH_3(g)\) is bubbled into water.

When \(NH_3\)(g) is bubbled into water, it reacts with water molecules to form ammonium hydroxide (\(NH_4OH\)) and hydronium ion \((H_3O^+)\), according to the following equation:

\(NH_3 + H_2O = NH_4^{+} + OH^-\)

The equilibrium constant for this reaction is the base dissociation constant (Kb) for \(NH_3\), which has a value of 1.8 x 10^-5 at 25°C.

At equilibrium, the concentrations of the various species in solution will depend on the concentration of \(NH_3\) initially added to the solution, as well as the temperature and pressure of the system. However, in general, at equilibrium, the concentration of \(NH_3\) will be significantly lower than the concentrations of \(NH_4^+\), \(OH^-\), and \(H_3O^+\).

The concentration of \(NH_4^+\) will be equal to the concentration of \(NH_3\) that has reacted with water to form \(NH_4OH\). The concentration of \(OH^-\) will be equal to the concentration of \(NH_4OH\) that has dissociated into \(NH_4^+\) and \(OH^-\).

The concentration of \(H_3O^+\) will be equal to the concentration of \(OH^-\) according to the equilibrium constant expression for water autoionization. The concentration of \(NH_2\) is expected to be extremely low because it is an intermediate in the reaction between \(NH_3\) and water, and it readily reacts with \(H_3O^+\) to form \(NH_4^+\).

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Answer:

true

Explanation:

The  chemically defined (synthetic) medium suitable for the growth of a heterotrophic prokaryote is system of glucose, potassium phosphate, ammonium chloride, sodium chloride, magnesium sulfate, and ferric chloride.

Inorganic nitrogen (N) substrates can be taken up by heterotrophic prokaryotes. The possible competition for nitrogen in the ocean between heterotrophic prokaryotes and autotrophic plankton, which might divert the flow of nitrogen supporting primary production, is still unknown.

As cyanobacteria dominate oligotrophic waters, it has been challenging to discern between autotrophic picoplankton and heterotrophic prokaryotic N intake.

The suitable medium which is chemically suitable for the growth of heterotrophic prokaryotes is option c,  glucose, potassium phosphate, ammonium chloride, sodium chloride, magnesium sulfate.

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Answer:

Solid ionic compounds do not have electrical conductivity because the ions are not free to move. In a liquid, the ionic compound dissociates into its respective ions.

Answer:

cell membrane

Explanation:

Answer:

B

Explanation:

Use the molar mass of H2SO4 to get moles of H2SO4; 51.2g/98.079g=0.522

Divide 500 mL by 1000 to get L

Molarity = moles of solute/L of solution; so divide the moles by 0.5L

3.9 tons of A and 1.8 tons of B must be burned for Steam power plants.

Steam power plants consist of boilers, steam turbines, generators, and other ancillary equipment. Boilers produce high pressure, high temperature steam. A steam turbine converts the thermal energy of steam into mechanical energy. The generator then converts mechanical energy into electrical energy. 

The amount of tons of each type of coal the Steam power plants must have burned is represented by the vector equation:

x1v1 + x2v2 = b

\(\left[\begin{array}{ccc}27.6&3100&250\\30&6400&360\\23&23610&1623\end{array}\right]\)

where first row represents v1, second row represents v2 and third row represents v3.

3.9 tons of A and 1.8 tons of B must be burned.

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Answer:

No se ingles te ayudaria pero no entiendo nada

The independent variable in this study is different months that is changing the dependent variable is the diversity of soil bacteria.

In an experiment, there are two types of variables namely, dependent and independent variables. The dependent variables are those which depends on the other variables and changes with them. These variables cannot be controlled by the experimenter and this is under study.

Independent variables are variables independent of all other variables which we can be changed to study the change in dependent variables.

Here, what the scientist is to be studied is diversity of soil bacteria.

Hence, diversity is the dependent variable. The independently changing variables are the different months. They are the independent variables.

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Answer:

a proton turns into an atom that goes kabloey into fission products and other neutrons.

Explanation:

Answer:

Oxidation occurs when a reactant loses electrons during the reaction. Reduction occurs when a reactant gains electrons during the reaction.

Answer:

Earth's rotation.

Explanation:

Most of the options are obviously incorrect, with the exception of tilt. However, tilt is the cause of seasons, not days.

Answer: Earth's rotation on its axis

Explanation:

Answer:

three atoms = 1 water molecule

3 × 6 = 18 atoms

................

Answer:

differential

Explanation:

According to openstax.org, "Gram-staining is a differential staining technique that uses a primary stain and a secondary counterstain to distinguish between gram-positive and gram-negative bacteria."

As the system approaches equilibrium, entropy is near its maximum.

The entropy is said to be the degree of disorderliness of a system. Ice is a crystal in which the molecules are perfectly ordered so its entropy is at a minimum.

As ice melts, the molecules gain more energy and separate from each other. There is now an increase of particles in the system leading to an increase in entropy.

Hence, when the system is at equilibrium, entropy is at a maximum.

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