how do you find time when you have been given the distance

He did not meet his goal because 25% is lesser than 30% and he needs 30% or more Osvoldo's objective was not achieved.

If he had 220 grams of carbohydrates today, and 55 of those grams came from whole grains, then the proportion of his total carbohydrates that were made up of whole grains was.

It is assumed that Osvoldo aims to consume at least 30 percent of his daily grams of carbohydrates from whole grains.

He consumed 220 grams of carbohydrates today.

55 grams of whole-grain carbohydrates

We must ascertain whether Osvoldo achieved his objective or not.

We must determine if 55 is at least 30% of 220.

He only obtains 25% of his daily grams of carbohydrates from whole grains because 55 is 25% of 220.

55/220 × 100 = 25%

he has a goal of getting at least 30% percent of his grams of carbohydrates each day from whole grains, Hence, Osvoldo did not meet his goal.

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Positive ions grow in magnitude from left to right, while negative ions grow in magnitude from right to left.

Any atom or collection of atoms with one or more positive or negative electrical charges is known as an ion.

The periodic table shows that there are more valence electrons on the right than the left. The maximum amount of ionic charge that an element can hold fluctuates as the number of valence electrons rises.

Second, metals on the periodic table's left side primarily produce positively charged ions. These ions get stronger over time, increasing in size.

The negative charges on the ions that non metals on the right side of the periodic table produce have a diminishing magnitude over time.

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Answer:

It all depends on the object. For example if it is a bowling ball then no, but if it is a golf ball then yes.

Explanation:

Explanation:

500 degree Celsius because we can see it in the tube

Answer: if the staff at Chernobyl had been better trained.

The Chernobyl series seems to suggest there were a number of ways the explosion could have been prevented. These include if the staff at Chernobyl had been better trained, if the Soviet government had learned from the lessons of the past and if they had not been so averse to spending money.

The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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The pressure when the volume is 1.67 l and the temperature is 305 k 1.604 atm.

Using the ideal gas equation:-

Given;

P₁ = 1.06 atm

V₁ = 2.37 L

T₁ = 286 K

P₂ = ?

V₂ = 1.67

T₂ = 305 K

P₁V₁/T₁ =P₂V₂/T₂

P₂ = P₁V₁T₂ /T₁V₂

   =  1.06 × 2.37 ×  305 /  286 × 1.67

    = 766.221 / 477.62

     = 1.604 atm

What is Pressure?

The physical force exerted on an item is called Pressure. The force applied is vertical to the surface of items per unit area. The basic formula for pressure is Force/Area.

What is an ideal gas?

An ideal gas is an intransigent gas composed of a set of irregularly-moving point atoms that interact only through elastic conflicts.

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The equilibrium constant of the dissociation of potassium hydrogen tartrate (KHT) is equal to the square of the bitartrate concentration due to the dissociation of KHT into two hydrogen ions (H+) and bitartrate ions (HC₄H₄O₆⁻) as shown below:

KHT ⇌ H+ + HC₄H₄O₆⁻

Here, the equilibrium constant expression for the dissociation reaction of KHT can be written as follows:

Kc = [H+] [HC₄H₄O₆⁻]/ [KHT]

As we know, KHT dissociates into two moles of bitartrate ion (HC₄H₄O₆⁻) and one mole of hydrogen ion (H+). So, after the dissociation of KHT, the concentration of the bitartrate ion (HC₄H₄O₆⁻) will be double that of the hydrogen ion (H+).

Therefore, the concentration of hydrogen ion (H+) will be equal to the square root of the concentration of bitartrate ion (HC₄H₄O₆⁻).

Hence, Kc = [H+]²[HC₄H₄O₆⁻]/ [KHT] = [HC₄H₄O₆⁻]²/ [KHT]

This is the reason why the equilibrium constant of the dissociation of KHT is equal to the square of the bitartrate concentration.

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Answer:

A) Oxygen

Explanation:

An element is defined as something made of only 1 type of atom. Brass and rust are made up of many types of atoms, and water has two types of atoms, hydrogen and oxygen. Oxygen is made up of two oxygen atoms, which are the same element. So, by definition, oxygen is an element.

Answer:A

Explanation:

If one strand of a DNA molecule has the base sequence of 5'-ATGTGCC-3', the complementary strand of DNA will read 3'-TACACGG-5'.

This is because of the complementary base pairing rules of DNA, where adenine (A) always pairs with thymine (T) and cytosine (C) always pairs with guanine (G). In the given sequence, A pairs with T, T pairs with A, G pairs with C, and C pairs with G.

Therefore, the complementary strand has the opposite sequence, with the nucleotides arranged in the opposite direction. The 3' end of one strand always pairs with the 5' end of the other strand, and vice versa. This base pairing is essential for DNA replication and transcription, as well as for maintaining the genetic code.

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Silver bromide (AgBr) will be most soluble in an aqueous solution that contains a high concentration of a complexing agent or a strong reducing agent. These agents can help dissolve AgBr by forming soluble complexes or by reducing silver ions to metallic silver. In general, AgBr exhibits low solubility in most common aqueous solutions due to its strong ionic bonding.

Silver bromide (AgBr) is not very soluble in aqueous solutions due to its low solubility product. However, it can dissolve to a small extent in certain solutions. Out of the given options, the solubility of AgBr would be highest in a solution containing a high concentration of anions that can form soluble complexes with silver ions. AgBr is slightly soluble in aqueous solutions of potassium bromide (KBr), sodium bromide (NaBr), or ammonium bromide (NH4Br) due to the formation of soluble complex ions. However, it is less soluble in pure water due to the absence of any complex-forming ions. Overall, the solubility of AgBr in aqueous solutions is relatively low, but it can increase in the presence of certain complex-forming agents.
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The standard cell notation of a galvanic cell made with aluminum and magnesium is option A. Al3+(aq) | Al(s) || Mg(s) | Mg2(aq).

The right side is the cathode and the left side is the anode. The cell is represented by the convention that the metal is written first, then the metal ions present in the electrolyte. And these two should be separated by a vertical line. Zinc becomes the cathode of the galvanic cell.

Galvanic cells consist of two different metal electrodes connected by a conductive solution electrolyte, which are also connected externally to complete an electrical circuit. Cell notation or cell representation in chemistry is a simple way of representing reactions in an electrochemical cell. The silver half-cell is reduced due to its high standard reduction potential. Tin half-cells are oxidized.

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Answer: C

Explaination:

Answer:

3F2+P2_>2PF3now f is 6 on both sides and your p is also 2 on both sides

Metallic elements exist in a solid-state and they are opaque, have a shiny surface, good conductors of electricity and heat, malleable and ductile, and are dense. The structure of metals is formed by atoms that are held together by metallic bonds. These atoms have loosely bound valence electrons that can be shared between the neighboring atoms.

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In reference to given data in questin, the concentration of Mg²⁺ions and OH- ions in the solution is 2.0 × 10⁻⁸M.

In chemistry, dissociation refers to the process of breaking apart a molecule or compound into its constituent parts, usually through a chemical reaction. The most common type of dissociation involves ionic compounds, where the compound breaks down into its individual ions when dissolved in a solvent such as water.

The dissociation of Mg(OH)2 can be represented as follows:

Mg(OH)₂ → Mg²⁺ + 2OH-

Since Mg(OH)₂ is completely dissociated, the initial concentration of Mg2+ ions and OH- ions will be equal to each other.

The initial concentration of Mg(OH)₂ is given as 4.0 × 10-8 M.

So, the concentration of Mg²⁺ ions and OH⁻ ions will be half of this initial concentration as per the balanced equation.

[Mg2+] = [OH-] = (4.0 × 10⁻⁸) / 2 = 2.0 × 10⁻⁸ M.

Therefore, the concentration of Mg²⁺ ions and OH- ions in the solution is 2.0 × 10⁻⁸M.

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Answer:

Boiling a egg

vegetables rotting  

Hope this helps

Explanation:

Answer: The initial temperature of the iron was \(515^0C\)

Explanation:

\(heat_{absorbed}=heat_{released}\)

As we know that,  

\(Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})\)

\(m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)]\)         .................(1)

where,

q = heat absorbed or released

\(m_1\) = mass of iron = 360 g

\(m_2\) = mass of water = 750 g

\(T_{final}\) = final temperature = \(46.7^0C\)

\(T_1\) = temperature of iron = ?

\(T_2\) = temperature of water = \(22.5^oC\)

\(c_1\) = specific heat of iron = \(0.450J/g^0C\)

\(c_2\) = specific heat of water= \(4.184J/g^0C\)

Now put all the given values in equation (1), we get

\(-360\times 0.450\times (46.7-x)=[750\times 4.184\times (46.7-22.5)]\)

\(T_i=515^0C\)

Therefore, the initial temperature of the iron was \(515^0C\)

False. Viscosity of a polymer is not typically measured hourly; measurements depend on specific requirements.

False. The viscosity of a polymer is not typically measured on an hourly basis. Viscosity refers to the resistance of a fluid to flow, and it is generally measured under specific conditions, such as at a particular temperature or shear rate.

The viscosity of a polymer can be influenced by various factors, including molecular weight, temperature, and shear stress.

It is more common to measure the viscosity of a polymer at specific time intervals relevant to the experiment or process being studied. The frequency of measurements depends on the specific objectives and requirements of the study.

These measurements are often recorded at regular intervals, such as daily, weekly, or at specific milestones during a polymerization process.

Therefore, the statement that the viscosity of a polymer is measured hourly is false.

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The mass of 50,000 molecules of methane is 1.35 × 10⁻¹⁸ gram.

To find the mass of 50,000 molecules of methane, we need to multiply the mass of one methane molecule by the number of molecules.

Given:

Mass of one methane molecule = 2.7 × 10⁻²³ gram

Number of methane molecules = 50,000

To calculate the mass of 50,000 molecules of methane, we can use the following equation:

Mass = (Mass of one molecule) × (Number of molecules)

Mass = (2.7 × 10⁻²³ gram) × (50,000)

Now, let's calculate the mass:

Mass = 2.7 × 10⁻²³ × 50,000

Mass = 1.35 × 10⁻¹⁸ gram

Therefore, the mass of 50,000 molecules of methane is 1.35 × 10⁻¹⁸ gram.

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Answer: B. Mg

Explanation:

Ionization energy is the energy required for the removal of valence electron from an isolated gaseous atom.

Ionization energy increases as we move across the period as the atomic size decreases as the electrons are being added to the same energy level.

Ionization energy decreases as we move down the group as the atomic size increases due to the addition of shells.

As magnesium (Mg) lies to the right of Sodium (Na) and Poatssium (K) and Calcium (Ca) lies below Magnesium (Mg), Mg has the highest ionization energy.

Answer:

option no. C is correct

an electron in the 3d

Gravity acts towards the center of the earth. Gravity can not be stopped

While other fundamental forces, such as electromagnetic force, can be either attractive or repulsive depending on the charges involved, gravity is always attractive. This means that any two objects in the universe with mass will be attracted to each other.

Every object in the universe with mass is affected by the force of gravity. This makes it a universal force that plays a key role in the behavior of the cosmos.

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The effect of changing the temperature of the nitric acid on the rate of reaction. (Include measuring the volume of carbon dioxide gas produced) is Rate of reaction increases.

When we increase the temperature of the reaction the rate of reaction also increases. With the increase of the temperature of the nitric acid HNO₃, the rate of the reaction also increases as the molecule moves faster. Arrhenius equation given as :'

k = Ae^(Ea / RT)

or, ln k = -Ea /RT + ln A

where,

k = rate constant

A = Arrhenius constant

Ea = activation energy

R = gas constant

T = temperature

Thus, The effect of changing the temperature of the nitric acid on the rate of reaction. (Include measuring the volume of carbon dioxide gas produced) is Rate of reaction increases.

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The  coordinates of B'  is (2,1)​ if the triangle below is reflected across the y-axis .

Hence , option D is correct one .

A reflection is a transformation of the graph of a function over x - axis or the y - axis ( or both ) . The x-coordinate of each point must be negated while reflecting across the Y-  axis, but the  value must remain unchanged .

Each point in a figure is transformed into a reflection by reflecting it over a line. This reflection translates the ABC triangle (A, B, and C) . The outcome is a brand-new figure known as the picture .

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It's number 1 only, the rest are irrelevant

Answer:

37%+24%+23%=84% , i wish my answer is correct

Answer:

NaOH

Explanation:

Sodium hydroxide is the base in the acid-base reaction as all other acids and sodium chloride is salt and water is neutral.

According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.

Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.

They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.

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