A sugar forms a cyclic-hemiacetal by reaction between an alcohol and an ______________.
aldehyde

Answer:

At 30 and 2,204

diagonal

liquid phase

2856

top horizontal line

flat

the change from a solid to a liquid

Explanation:

Answer: The first one would be a frozen thing like ice since the molecules are so packed, the next would be like this inside of a basketball or car tires, they move around freely(solid), and the last would be a gas since they aren't so many left(gas)

Explanation:

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the states are solid, liquid and gases.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter. Degree of Celsius is used to measure temperature which has nothing to do with matter.

Therefore, the states are solid, liquid and gases.

To learn more about matter, here:

https://brainly.com/question/4562319

#SPJ2

According to the atomic theory,  atom is the smallest unit that composes matter.

The atomic theory refers to the theory that insists that the atom is the smallest unit that composes matter.

Scientists may reject the atomic theory if;

Learn more about atomic theory:https://brainly.com/question/18742532

#SPJ1

Answer:

hanigin ng mga pule natin

Answer: 12350 = 484375 us

Explanation:

The equation of the beta decay of copper-64 is as follows:

⁶⁴₂₉Cu ---> ⁶⁴₃₀Zn + ⁰₋₁e

A = 64, Z = 30, X = Zn

The beta decay of a radioactive substance is a form of decay in which a beta particle is emitted from the atom and the new element has its atomic number increasing by 1 compared to the original element. However, the mass of the atom remains the same.

The beta particle emitted is an electron.

The new element formed is an isobar of the original element.

The beta decay of copper-64 is shown below:

⁶⁴₂₉Cu ---> ⁶⁴₃₀Zn + ⁰₋₁e

Learn more about beta decay at: https://brainly.com/question/9615302

#SPJ1

the number of Valence electrons remains the same

After letting the experiment run for a week, Miller and Urey found that various types of amino acids, sugars, lipids and other organic molecules had formed.

The first experimental support to Oparin-theory Haldane's of origin of life came from Urey and Miller's experiment. They conducted experiment on evolution to prove the biochemical origin of life.
Miller created a laboratory apparatus out of glass tubes and flasks in 1953. He created a hydrogen, ammonia, methane, and water vapour atmosphere in one large flask and allowed condensed liquid to accumulate in another small flask. In the large flask, the methane, ammonia, and hydrogen ratios were 2: 1: 2. The apparatus was powered by heating the liquid as well as electric sparks from tungsten electrodes in the gaseous flask. The apparatus conditions were similar to the early earth's atmosphere.

Go through the given link below to know more about Organic molecules:-

https://brainly.com/question/26556885

#SPJ4

Answer:

4.21

Explanation:

use Avogadro's number

6.023 x 10^23

multiply this by 7 because you want to find 7 moles :

6.023 x 10^23 x 7 = 4.21

Answer:

change an object's motion. So basically it can cause an object to move, change direction, or stop moving.

Explanation:

Answer:

incorrect

Explanation:

The statement "A solution that contains 50 g of [unknown substance] in 100 mL of water at 80 degrees C is" is incomplete and does not provide enough information to answer the question. We need to know what substance is dissolved in the water in order to determine the properties of the solution, such as its concentration and behavior at a certain temperature. Please provide more information or context to the question so that I can assist you better.

Option a is correct: Alloantibodies to blood-vessel endothelium on solid organ grafts are specific for HLA class I and class II antigens.

Alloantibodies are antibodies produced by an individual's immune system in response to foreign antigens from another individual of the same species (allogeneic). In the context of solid organ transplantation, alloantibodies can target the endothelium (inner lining) of blood vessels in the transplanted organ.

HLA (Human Leukocyte Antigen) class I and class II antigens are major histocompatibility complex (MHC) molecules that play a crucial role in the immune system's recognition of self and non-self cells. These antigens are highly polymorphic and vary between individuals, making them important targets for alloantibodies.

Therefore, option a is correct: Alloantibodies to blood-vessel endothelium on solid organ grafts are specific for HLA class I and class II antigens.

Learn more about Alloantibodies from the link given below.

https://brainly.com/question/29739527

#SPJ4

Answer:

12

Explanation:

Answer: M⁻¹ x s⁻¹

Explanation:

Units for rate constant K.

Zero order: M x s⁻¹

First order: s⁻¹

Second order: M⁻¹ x s⁻¹

Answer:

cu+2 ------ oxidation whereas Cu ------ reduction.

Explanation:

In the reaction, cu+2 is the place where oxidation occurs because this cupric ion losses electrons  which causes +2 charge on it. we know that oxidation is the loss of electrons and reduction is the gaining of electrons so the Cu is the place or atom at which reduction occurs. Electrochemical cells have two electrodes, which is anode and the cathode. The anode is the electrode where oxidation occurs whereas the cathode is the electrode where reduction takes place.

Explanation:

the intensity of a He-Ne laser (633 nm ,5 mW) transmitted by different Gase samples is observed to change in correlation with the Nd-yttrium-aluminium-garnet laser pulse (532 nm, 7.8ns ,3mJ) which excites them

Answer:

Cassiterite is an ore of Sn.It is also called tinstone and has molecular formula of SnO

2 . It is heavy, metallic, hard tin dioxide that is the major ore of tin. It is colourless when pure, but brown or black when iron impurities are present.

Answer:

this means that the movement of the galaxies in the universe are stretching and are getting bigger and the frequency of the light waves are decreasing because the wider something gets like galaxies and stuff like that that gives off light are stretching so it will become dimer because it is trying to stretch to wider surroundings and that means the light has to stretch to so the light has to cover bigger surfaces and the light can not get brighter so it has to stretch and dim its light.

Explanation:

Answer: Gains an extra electron in 2p orbitals it's option Y (1s²,2s², 2p⁶

If a new method for obtaining oil from dry oil fields is found, then we would expect to see an increase in oil production, which would lead to a leftward movement along the AD curve as demand for oil is met more easily.

However, if this increase in supply is significant enough, it could also lead to a shift of the AS curve to the right, indicating an increase in potential output. Therefore, the correct answer would be b. a movement to the left along the AD curve, and potentially a shift of the AS curve to the right. The AD curve represents the relationship between aggregate demand and the price level, while the AS curve represents the relationship between aggregate supply and the price level.
If a new method for obtaining oil from dry oil fields is found, then we will see e. the AS (Aggregate Supply) curve shift to the right. This is because the new method would increase the availability of oil, resulting in a larger supply of goods and services at the same price level, which causes the AS curve to shift to the right.

Visit here to learn more about AD curve:

brainly.com/question/29610075

#SPJ11

Answer:

An orbit is a fixed path on which electrons revolve around the nucleus. An orbital is the probable area of finding the maximum density of electrons in an atom. An orbit is a planar representation, i.e., a two dimensional representation.

Answer: The given reaction is a neutralization reaction.

Explanation:

When an acid chemically reacts with a base then it leads to the formation of salt and water.

For example, \(3KOH + H_{3}PO_{4} \rightarrow K_{3}PO_{4} + 3H_{2}O\)

Here, KOH is a the base and \(H_{3}PO_{4}\) is an acid which on chemical reaction with each other leads to the formation of salt \((K_{3}PO_{4})\) and water \((H_{2}O)\).

Thus, we can conclude that the given reaction is a neutralization reaction.

Answer:

This happens because a metal is less reactive than carbon and it can be extracted from its oxides by heating with carbon. The carbon displaces metal from the compound and removes the oxygen from the oxide.

Using phenolphthalein indicator, we will attempt to determine the concentration of various acids depending on the amount of protons available for donation. using a single acceptor base (naoh), we will titrate the acid to the point where it turns pink, representing an equal mixture of acid and base

An Phenolphthalein indicator is a ‘dye’ that shows a change in colour when in contact with acids and bases. This tells us whether the substance we are testing is an acid or base with respect to the change of colour. Phenolphthalein indicator when comes in contact with acid and base they give intense pink colour.  

Phenolphthalein Colour in acid (pH  < 7) give Colourless and Colour at pH = 7 also give Colourless, Colour in base(pH > 7) gives Pink colour that's why using Phenolphthalein indicator we will attempt to determine the concentration of various acids depending on the amount of protons available for donation. using a single acceptor base (naoh), we will titrate the acid to the point where it turns pink, representing an equal mixture of acid and base.

Know more about indicator

https://brainly.com/question/28537244

#SPJ4

c is the correct answer

The correct answer is option A: Subtract the atomic number from the mass number.

An atom is composed of a proton, a neutron and an electron. These are collectively called subatomic particles.

The proton and neutron are found in the nucleus of the atom, surrounded by electrons.

The atomic number is the same as the number of protons in the atom or the number of electrons in the neutral atom.

The mass number is the sum of the number of protons and the number of neutrons in the atom.

Hence, to obtain the number of neutron, we subtract the atomic number from the mass number.

https://brainly.com/question/14156701

The specific heat of the object is 0.20 Cal/(g*oC).

The formula for calculating the amount of heat (q) transferred to an object is given by:

q = m * c * ΔT

Where q = heat energy, m = mass, c = specific heat, and ΔT = change in temperature.

In this problem, we are given:

m = 20.0 g (mass of the object)

ΔT = 5.0 oC (change in temperature)

q = 20.0 Cal (heat energy transferred)

Substituting these values in the above formula, we get:

20.0 Cal = 20.0 g * c * 5.0 oC

Solving for c, we get:

c = 0.20 Cal/ (g*oC)

To know more about Temperature:

https://brainly.com/question/21041726

#SPJ4

High pressure and low temperature conditions are the ones where gas samples are least likely to behave ideally.
Option D. Low pressure, high temperature.

An ideal gas is a theoretical gas composed of a large number of small particles that are in constant random motion. These particles have negligible volume and do not attract or repel each other. Therefore, ideal gases follow the gas laws, which describe the relationship between pressure, volume, temperature, and number of particles.

However, real gases do not always behave ideally. The behavior of real gases is affected by several factors, such as intermolecular forces, particle size, and the volume of the gas particles.

Now coming to your question, under which of the following sets of conditions would a gas sample be least likely to behave ideally? The answer is option A, high pressure and low temperature. This is because at high pressures and low temperatures, the intermolecular forces between the gas particles become more significant, and the volume of the gas particles becomes more significant. These factors cause the gas particles to deviate from ideal gas behavior.

At low pressures and high temperatures (option D), the volume of the gas particles is relatively small compared to the volume of the container, and the intermolecular forces are weak. Therefore, gases are more likely to behave ideally under these conditions.

To know more about ideal gas visit:-

https://brainly.com/question/30236490

#SPJ11

1) The temperature of the egg at time t can be calculated using the equation T(t) = 18 + 80 * e^(-0.168t), where t is the time measured in minutes.

2) The realistic domain of the temperature function is t ≥ 0, meaning time cannot be negative.

3) A rough analysis of the temperature function shows an exponential decay curve starting at 98°C and approaching 18°C asymptotically. There is an intercept at t = 0, corresponding to the initial temperature of 98°C.

4) It takes approximately 18.17 minutes for the egg to cool to a temperature of 20°C.

1.

To solve for T(t), we can use the formula derived from Newton's Law of Cooling:

T(t) - Ts = (T0 - Ts) * e^(-kt)

Given the initial conditions:

T0 = 98°C (initial temperature of the egg)

Ts = 18°C (surrounding temperature)

T(5) = 38°C (temperature of the egg after 5 minutes)

We can substitute these values into the equation:

T(5) - 18 = (98 - 18) * e^(-5k)

20 = 80 * e^(-5k)

Dividing both sides by 80:

1/4 = e^(-5k)

Take the natural logarithm of both sides:

ln(1/4) = -5k

Solving for k:

k = -ln(1/4) / 5 ≈ 0.168

Now we have the value of k. We can substitute it back into the equation to get the temperature function:

T(t) - 18 = (98 - 18) * e^(-0.168t)

Simplifying further:

T(t) = 18 + 80 * e^(-0.168t)

2.

The realistic domain of the temperature function is t ≥ 0 since time cannot be negative.

3.

Analyzing the function:

The function is exponential decay, starting at 98°C and approaching 18°C asymptotically. There is an intercept at t = 0, where the temperature is 98°C. As time progresses, the temperature decreases and approaches 18°C. However, it never reaches exactly 18°C due to the exponential decay nature of the function.

4.

To find the time it takes for the egg to cool to a temperature of 20°C, we can substitute T(t) = 20 and solve for t:

20 = 18 + 80 * e^(-0.168t)

2 = 80 * e^(-0.168t)

Dividing both sides by 80:

1/40 = e^(-0.168t)

Taking the natural logarithm of both sides:

ln(1/40) = -0.168t

Solving for t:

t = -ln(1/40) / (-0.168) ≈ 18.17 minutes

Therefore, it takes approximately 18.17 minutes for the egg to cool to a temperature of 20°C.

Learn more about Newton's Law from the link given below.

https://brainly.com/question/27573481

#SPJ4

Answer:

19.5g

Explanation:

Given parameters:

Volume of propane gas = 9.95L

Unknown:

Mass of propane gas =  ?

Solution:

To solve this problem, find the number of moles first.

    At STP;

        22.4L of gas makes up 1 mole

         9.95L of gas will have a \(\frac{9.95}{22.4}\)    = 0.44mole

So;

   Mass of propane gas  = number of moles x molar mass

Molar mass of propane  = 3(12) + 8(1)  = 44g/mol

    Mass  = 0.44 x 44  = 19.5g