Titanium (Ti, #22) atoms bond with Oxygen (O, #8) atoms. What type of bond will hold them together? (1 pt)
*
1 point
ionic
covalent
metal
intermolecular (hydrogen, dipole, etc.)

The heat absorbed is  1713.8 J

Heat capacity is the amount of heat energy required to increase the temperature of a substance by one degree Celsius (or Kelvin). We can use it as the means that we can use to identify a given substance.

Heat capacity is important in engineering thermodynamics, materials science, and process engineering.

We know that;

H = mcdT

H = 100 g * 4.18 * (27.8 - 23.7)

H = 1713.8 J

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The potential problems associated with a deep well injection is that it can result in polluting underground water.

If there are many wells nearby, injecting wastewater into subsurface rock strata can be problematic. Consider porous sandstone, which contains minute openings. Water under high pressure, such as wastewater from fracking, can penetrate the sandstone and travel with underground water.

An injection well is employed to inject fluid underground into porous geologic formations. These subterranean structures might be anything from a modest soil layer to thick sandstone or limestone. Water, wastewater, brine (salt water), and water that has been combined with chemicals are all examples of injected fluids.

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Answer:

See explanation

Explanation:

Copper II oxide is a base but not an alkali. An alkali is a soluble base. Since Copper II oxide is not soluble in water then it is not an alkali.

Let us recall that the change of colour of litmus with an alkali requires the presence of water. In the absence of water, solid Copper II oxide does not turn red litmus paper blue.

The ability to turn red litmus paper blue is commonly observed with alkalis and Copper II oxide is not an alkali.

Also recall that since Copper II oxide is not soluble, hydroxide ions are absent hence Copper II oxide does not turn red litmus paper blue.

2.76 moles of HCl can be neutralized by 154.9 grams of KOH.

To determine how many moles of HCl can be neutralized by 154.9 grams of KOH, you need to use the stoichiometry of the balanced equation. The balanced equation for the reaction between HCl and KOH is:HCl + KOH → KCl + H2OFrom this equation, you can see that 1 mole of HCl reacts with 1 mole of KOH. Therefore, the number of moles of KOH that can react with the given mass of KOH is:mass of KOH = 154.9 gramsmolar mass of KOH = 39.1 + 16 + 1 = 56.1 g/molnumber of moles of KOH = mass of KOH/molar mass of KOH= 154.9/56.1= 2.76 mol. Therefore, 2.76 moles of HCl can be neutralized by 154.9 grams of KOH.

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If you have 10 kg each of a radioactive sample a with a half-life of 100 years, and another sample b with a half-life of 1000 years, sample A has a higher decay constant and higher activity.

The activity of a radioactive sample refers to the number of decays occurring per unit time. It is measured in units of becquerels (Bq) or curies (Ci). The activity of a sample is proportional to the number of radioactive nuclei present in the sample.

The decay rate of a radioactive sample is determined by its half-life. The shorter the half-life, the higher the decay rate and the higher the activity. Therefore, sample A with a half-life of 100 years will have a higher decay rate and higher activity than sample B with a half-life of 1000 years.

To calculate the activity of a sample, we use the following formula

Activity = λN

where λ is the decay constant, and N is the number of radioactive nuclei present in the sample.

Since the two samples have the same mass, the number of radioactive nuclei will be the same. Therefore, the sample with the higher decay constant (λ) will have the higher activity.

The decay constant is related to the half-life by the following formula:

λ = ln(2) / \(t^{\frac{1}{2} }\)

where ln(2) is the natural logarithm of 2, and \(t^{\frac{1}{2} }\) is the half-life.

Using this formula, we can calculate the decay constants for samples A and B

\(\lambda_{A}\)= ln(2) / 100 years = 0.00693 per year

\(\lambda_{B}\) = ln(2) / 1000 years = 0.000693 per year

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Answer:

The solubility of certain salts can be explained due to the small size of the particles.  

Explanation:

As we know, solvents dissolve due to intermolecular spaces between two substance particles, Hence the solvent particle size should fit in those spaces.

Answer:

Explanation:

1. The characteristics of an acid are that it has a sour taste, reacts with metals, and turns blue litmus paper into red.

2. When you add TOO MUCH solute to a solution, the solution becomes saturated at some point. It will not dissolve anymore and will remain solid instead.

3. A mixture contains an acid and a base.

4. You test a liquid, and its pH is 7. This liquid is Neutral.

5. Lemon juice, apple juice, and Vinegar all have pH measurements below seven (7), making them acidic.

6. Ammonia, blood, and drain cleaner all have pH measurements above seven (7), making them basic.

7. Erosion is another word for eating away at material.

8. Vinegar can be an acid or base because it is a good conductor of electricity.

9. Cation is a positive ion and Anion is a negative ion.

10. Two or more substances mixed but not chemically combines are a Mixture.

a. low melting point: Nonmetals. b. shiny: Metals. c. poor conductor: Nonmetals. d. ductile: Metals. e. malleable: Metals. f. brittle: Nonmetals. g. good conductor: Metals. h. high melting point: Metals

a. Low melting point is generally displayed by nonmetals. Metals tend to have high melting points.

b. Metals are typically shiny due to their ability to reflect light.

c. Nonmetals are generally poor conductors of heat and electricity.

d. Metals are ductile, meaning they can be drawn into thin wires without breaking.

e. Metals are malleable, meaning they can be hammered into thin sheets or shapes without shattering.

f. Nonmetals are usually brittle, meaning they are prone to breaking or shattering when subjected to stress.

g. Metals are good conductors of heat and electricity.

h. Metals typically have high melting points compared to nonmetals.

It's important to note that these are general trends and not absolute characteristics for all metals or nonmetals. Some exceptions or variations may exist within specific elements or compounds.

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Answer:

2.677 J/g°C

Explanation:

Quantity of heat required to raise the temperature of the metal,

Q = mc∆T

where m is the mass of the metal, c is the metal's specific heat capacity, and ∆T is the change in temperature that accompanies the heat transfer process

20.0J = 50.0g × c × 150°C

c = 20.0J/(50.0g × 150°C)

c = 2.677 J/g°C

Hot water stays on the top of cold water and doesn't mix. This is because of difference in DENSITY of water at different temperatures.

When we heat water, then the atoms gain energy from the heat and start moving away from each other. Now, when the atoms move away from each other than the (mass per unit volume) i.e. the density decreases. This makes water lighter.

When the temperature is less i.e. cold water then the atoms are more compactly packed and therefore the density of water is more at lower temperatures.

Since, hot water is lighter than cold water that is why it stays on top of the cold water.

While acquired immunity is a particular, adaptable defense mechanism that evolves over time and possesses memory, innate immunity is the body's natural, non-specific defense system that offers immediate protection.

Thus, the initial line of defense against infections is innate immunity, which is present from birth. It contains chemical barriers like antimicrobial proteins and enzymes, together with physical barriers like the skin and mucous membranes, to give instant, all-purpose protection.

As a result of repeated exposure to particular pathogens, acquired immunity, often referred to as adaptive immunity, gradually develops. It is distinguished by its memory and distinctiveness. When lymphocytes (B cells and T cells) are activated, they either create antibodies or cell-mediated reactions, depending on the situation.

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Answer:

The extract is boiled with FeSO4 and acidified with concentrated H2SO4. The appearance on Prussian blue colour indicates the presence of nitrogen

Explanation:

PLS mark it brainliest

You test your hypothesis by completing an experiment.

We test our hypothesis by performing experiment or research because in an experiment, we test our hypothesis and collect data in order to draw a conclusion from it.

So we can conclude that you test your hypothesis by completing an experiment.

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Answer:Main Answer:

The mass of CO2 released in the production of 123,000 g of H2 gas is 265,200 g.

Explanation: From the given equation, we can see that the production of 4 moles of H2 requires the combustion of 1 mole of CH4, resulting in the release of 2 moles of H2O and 1 mole of CO2. The molar mass of H2 is 2 g/mol, and the molar mass of CO2 is 44 g/mol. Therefore, the mass of CO2 released in the production of 123,000 g of H2 is (123,000/2) x (1/4) x 44 = 265,200 g.

The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

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Answer:

The answer is hydrogen ions

C2H2OH is the answer

I am not sure but I think

We can't feel the force of attraction between us and mars due to the large distance and negligeable gravitation.

Gravitation is the universal force of attraction acting between all matter.

According to the universal law of gravitation, the effect of the force of gravity decreases as the distance increases.

The gravitation force is inversely proportional to the radius or the distance.

So, the gravitational force exhibited by the mars is not experienced by us due to the large distance.

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Answer: D.

Mars is a long distance away.

Explanation: plato :3

Hope this helps!

The heat transfer rate to the cold water is 167.51 kW, and the logarithmic mean temperature difference for this heat exchanger is 28°C.

We know that, Q = m × Cp × ΔT

Where

m = mass flow rate

Cp = specific heat capacity

ΔT = Temperature difference

Q = (1.5 kg/s) × 4.25 kJ/kg °C × (80 - 45)°CQ = 172.69 kW

As per the problem, 3% of the heat given off by the hot fluid is lost through the heat exchanger.

Thus, heat loss is 0.03 × 172.69 kW = 5.18 kW

The heat transfer rate to the cold water is given as Q1 = Q - heat loss = 172.69 kW - 5.18 kW= 167.51 kW

To find the logarithmic mean temperature difference for this heat exchanger:

The formula for LMTD is,∆Tlm = (ΔT1 - ΔT2) / ln(ΔT1 / ΔT2)

where

ΔT1 = hot side temperature difference = Th1 - Tc2

ΔT2 = cold side temperature difference = Th2 - Tc1

Tc1 = inlet temperature of cold water = 20°C

Tc2 = outlet temperature of cold water = ?

Th1 = inlet temperature of hot water = 80°C

Th2 = outlet temperature of hot water = 45°C

∆T1 = Th1 - Tc2 = 80°C - Tc2

∆T2 = Th2 - Tc1 = 45°C - 20°C = 25°C

Thus,∆Tlm = (80°C - Tc2 - 45°C) / ln[(80°C - Tc2) / (45°C - 20°C)]

∆Tlm = (35°C - Tc2) / ln(2.67[(80 - Tc2) / 25])

Now, the heat exchanger is a double pipe parallel flow heat exchanger. Thus, both hot and cold fluids have the same value of LMTD.∆Tlm = 35°C - Tc2 / ln(2.67[(80 - Tc2) / 25]) = 35°C - (47.81/ln(2.67[42.79/25]))

∆Tlm = 27.81°C which is approximately equal to 28°C

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Answer:

1 ppm :)

Explanation: i was guessing and 1 ppm was the answer :)

Answer:

C

Explanation:

Apex

The given bond is polar covalent bond.

Polar covalent bonds are covalent bonds in which the electrons are shared unequally. Nonpolar covalent bonds are covalent bonds with an equal distribution of electrons. Chemists utilise electronegativity, a relative measurement of how strongly an atom attracts electrons as it forms a covalent connection, to assess the relative polarity of a covalent bond.

Polarity characterises io3-. If a molecule's dipole moment is greater than 0, it is considered to be polar. The three I-O bonds in this combination are polar due to the difference in electronegativity between the I and O atoms. The three I-O bond moments point toward I atom because I is more electronegative than O atom.

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Answer:

1.8066e+24 is the answer

Answer:

Their weight.

Explanation:

Weight is the measurement of gravity pushing you down, so with less gravity there would be less weight.

The astronauts expect their weight to be different on the Moon

Weight is simply defined as the gravitational pull of the earth on an object. It is measured in Newton.

The weight of an object varies with location because of gravity.

The weight of an object is related to it's mass according to the following equation:

Weight = mass × Acceleration due to gravity

Since the gravity of the Moon is lesser than that of the Eearth, the astronauts certainly knew that their weight will be different on the Moon.

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Answer:is Cl and H

Explanation:

2Cd+2Hcl=2CdCl + H2

According to World Population Review 2022 the safest country to live are as follows.

These countries are listed safe by calculating global peace index.

This index measures the nation's and regions peacefulness and is finally reviewed by Institute of Economic and Peace (IEP).

The role of IEP is to measure peace at the worldwide and country level degree and lets us to evaluate the social, political and financial elements that create peace. Each year the Institute for Economics and Peace produces the Global Peace Index, the world’s main degree of countrywide peacefulness, rating 163 nations in line with their ranges of peace.

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When cycling against 4 kg of resistance with a 6 m/revolution flywheel at a pedaling rate of 60rpm, the power produced is approximately 1440 kgm/min or 240 Watts.

VO2max refers to the maximum volume of oxygen that a person can consume per kilogram of body weight per minute. It is commonly used as a measure of cardiorespiratory fitness. The equation you provided is one method to estimate VO2max based on a 1.5-mile run/walk field test and heart rate data.
To calculate the estimated VO2max for the 27-year-old man who completed the 1.5-mile run in 13 minutes, we need to substitute the given values into the equation:
VO2max (ml kg−1⋅min−1) = 3.5 + 483 / (1.5 mi time in minutes)
Substituting the values:
VO2max = 3.5 + 483 / 13
Simplifying the equation:
VO2max = 3.5 + 37.15
Calculating the sum:
VO2max ≈ 40.65 ml kg−1⋅min−1
Therefore, the estimated VO2max for the 27-year-old man is approximately 40.65 ml kg−1⋅min−1.
Regarding the second question, we can use the given VO2 and heart rate values for two stages of a submaximal test to estimate the VO2max for the 40-year-old woman. To do this, we need to use the formula:
b=(SM2−SM1)/(HR2−HR1)
VO2Max=SM2+b(HRmax−HR2)
Let's calculate the values step by step:
Substituting the given values:
b = (35.7 - 24.5) / (162 - 145)
Calculating the value of b:
b = 11.2 / 17
Substituting the values into the second part of the equation:
VO2Max = 35.7 + (11.2 / 17) * (HRmax - HR2)
To proceed further, we need the value of HRmax. Since it's not given in the question, we cannot provide an accurate estimation for the VO2max of the 40-year-old woman. I apologize for any inconvenience.
For the third question, we can calculate the kgm/min and Watts produced when cycling against 4 kg of resistance with a 6 m/revolution flywheel at a pedaling rate of 60rpm.
To calculate kgm/min:
Power [kgm/min] = Force [kg] × Flywheel Distance × RPM
Power [kgm/min] = 4 kg × 6 m × 60 rpm
Simplifying the equation:
Power [kgm/min] = 1440 kgm/min
To convert kgm/min to Watts, we divide by 6:
Watts = Power [kgm/min] / 6
Watts = 1440 kgm/min / 6
Calculating the value:
Watts ≈ 240 W
Therefore, when cycling against 4 kg of resistance with a 6 m/revolution flywheel at a pedaling rate of 60rpm, the power produced is approximately 1440 kgm/min or 240 Watts.

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In each case, the alkaline earth metal (Group 2 element) combines with the halide (Group 17 element) in a 1:2 ratio to form a stable compound.

Alkaline earth metals in Group 2, like magnesium (Mg), commonly form compounds in a 1:2 ratio with halides. This is because Group 2 elements have a +2 charge, while Group 17 halides have a -1 charge. The 1:2 ratio balances the charges, resulting in a neutral compound. Examples of such compounds include:

1. Calcium (Ca) and chlorine (Cl) form calcium chloride (\(CaCl_{2}\)).
2. Beryllium (Be) and iodine (I) form beryllium iodide (\(BeI_{2}\)).
3. Strontium (Sr) and bromine (Br) form strontium bromide (\(SrBr_{2}\)).
4. Barium (Ba) and fluorine (F) form barium fluoride (\(BaF_{2}\)).

In each case, the alkaline earth metal (Group 2 element) combines with the halide (Group 17 element) in a 1:2 ratio to form a stable compound.

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However, assuming that CH3 is a part of a larger molecule, we can predict its shape, bond angle, and hybridization based on the bonding theory.

Since CH3 has three groups of valence electrons surrounding the central carbon atom, we can predict its shape to be trigonal planar. The bond angle between each of the three hydrogen atoms and the central carbon atom is predicted to be 120°. To determine the hybridization of the carbon atom, we can count the total number of electron groups (3 bonding groups + 0 lone pairs = 3 electron groups).

Based on this, we can predict the hybridization of the carbon atom to be sp2, where the s orbital and two of the p orbitals of the carbon atom hybridize to form three equivalent sp2 orbitals that are oriented in a trigonal planar arrangement. Therefore, the answer would be option A) trigonal planar, 120°, sp2.

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