which of the following molecules has a 104.5 o bond angle? responses carbon dioxide - no response given carbon dioxide carbon dioxide sulfur dioxide - no response given sulfur dioxide sulfur dioxide ammonia - no response given ammonia ammonia methane (ch4) - no response given methane (ch4)

Answer:

Wetlands trap the surface water, snowmelt, rain, groundwater, and flood water. They then slowly release the water. Wetland vegetations like trees and root mats also help in controlling the speed of flood water and release it slowly on the floodplain.

Explanation:

Answer:

No,  The Significant Figures are 2 3

Explanation:

The most abundant isotope among the given Isotopes will be Isotope B

To calculate the percent abundance of each isotope in a sample of an element, we usually divide the number of atoms of a particular isotope by the total number of atoms of all isotopes of that element and then multiply the result by 100.

% Abundance =  15/50 x 100

                        =  30 %

% Abundance =  30/50 x 100

                        =  60 %

% Abundance =  5/50 x 100

                        =  10 %

Hence, The most abundant isotope among the given Isotopes will be Isotope B.

Learn more about isotopes here ;

https://brainly.com/question/12955625

#SPJ1

The patterns of water use in the USA vary based on different factors such as the geography, climate, and the type of usage

Water usage can cause various problems if not managed properly such as pollution and scarcity.

Some areas in the US have abundant sources of water while others are water-scarce.

Agriculture is the largest water user in the US, followed by municipal and industrial uses. Irrigation is the main water usage in agricultural areas, while urban areas tend to use water for drinking, bathing, and other household purposes.

Excessive water usage can also lead to water scarcity, water pollution, and other environmental problems. Additionally, water usage conflicts can arise between different regions, states, and even countries. Therefore

Find out more on water usage at https://brainly.com/question/10678210

#SPJ1

Step 1

In a titration, the next equation is used in the equivalence point:

Where,

Number 1 will the conditions of HBr

Number 2 will the conditions of Ca(OH)2

----------------------

Step 2

Information provided:

M1 = 0.0105 M

V1 = unknown

---

M2 = 0.0100 M

V2 = 125 mL

-----------------------

Step 3

Procedure:

From step 1, V1 is found as follows:

Answer: V1 = 119 mL

The difference in temperature from standard that will cause an error of 1 part in 1×10⁴ when using a steel tape is approximately 0.005 degrees Celsius.

Steel tapes, like any measuring instrument, are affected by changes in temperature. When a steel tape is subjected to temperature variations, it expands or contracts, resulting in changes in its length. This thermal expansion or contraction can introduce errors in measurements if not properly accounted for.

To determine the temperature difference that will cause an error of 1 part in 1×10⁴, we need to consider the coefficient of linear expansion of the steel tape material. The coefficient of linear expansion represents the change in length per unit length per degree Celsius of temperature change.

Let's assume that the steel tape has a coefficient of linear expansion of α. To find the temperature difference, we can use the formula:

ΔT = (1 part in 1×10⁴) / (α × L)

Here, L represents the length of the steel tape.

Since the question mentions that both 46.99 and 47.0 are incorrect, we can conclude that the temperature difference causing the error is between these two values. This implies that the actual temperature difference is closer to 0.005 degrees Celsius.

By calculating the temperature difference using the given formula and the known coefficient of linear expansion for the specific steel tape being used, we can determine the exact value.

Learn more about temperature

https://brainly.com/question/11464844

#SPJ11

Answer:

carcinogen

Explanation:

cigarette smoke and UV radiation both of the capability to cause cancer cells in living tissue, meaning they can both be classed as carcinogens

Answer: sodium chloride

Explanation:

The boiling point of the solution in water is 100.128 °C.

The boiling point of a solution can be calculated using the formula:

ΔTb = Kb x molality

Where ΔTb is the change in boiling point, Kb is the boiling point elevation constant for the solvent, and molality is the concentration of solute in the solution.

The molality of the solution can be calculated as follows:

molality = (mass of solute) / (mass of solvent + mass of solute)

For a 25% solution of ethylene glycol, the molality is:

molality = (0.25 x mass of solution) / (mass of solution)

= 0.25 x (mass of ethylene glycol) / (mass of water + mass of ethylene glycol)

The change in boiling point can then be calculated as:

ΔTb = Kb x molality

= 0.512 x 0.25

= 0.128 °C

So the boiling point of the solution is:

Boiling point = normal boiling point of water + ΔTb

= 100 °C + 0.128 °C

= 100.128 °C

Learn more on boiling point here: https://brainly.com/question/24675373

#SPJ1

Answer:

4 covalent bonds

Explanation:

Answer:H2O = H2 + O

Explanation:

Answer:

Some examples of predator and prey are lion and zebra, bear and fish, and fox and rabbit. The words "predator" and "prey" are almost always used to mean only animals that eat animals, but the same concept also applies to plants: Bear and berry, rabbit and lettuce, grasshopper and leaf.

Answer: Nerves, Brain and spinal cord

Explanation:the other choices are either part of the cardiovascular system or the respiratory system

The molar mass of the metal X is approximately 59.9 g/mol. The metal X is identified as cobalt (Co).

To calculate the molar mass of the metal and identify the element, we can use the information provided.

First, we need to determine the number of moles of H2SO4 used in the reaction. We can use the equation Molarity (M) = Moles (mol) / Volume (L) to find this.

0.500 M H2SO4 * 0.100 L = 0.050 mol H2SO4

Next, we need to determine the number of moles of NaOH used in the neutralization. Using the same equation, we can calculate this.
0.500 M NaOH * 0.0334 L = 0.0167 mol NaOH

Since the reaction is a 1:1 ratio between H2SO4 and NaOH, the number of moles of H2SO4 used is equal to the number of moles of NaOH used.

Therefore, the number of moles of metal X is also 0.0167 mol.

To find the molar mass of the metal X, we can use the equation Molar mass (g/mol) = Mass (g) / Moles (mol).
1.00 g / 0.0167 mol = 59.9 g/mol

The molar mass of the metal X is approximately 59.9 g/mol.

To identify the element, we need to find its atomic mass. The molar mass of 59.9 g/mol is closest to the atomic mass of cobalt (Co) which is 58.9 g/mol. Therefore, the metal X is cobalt (Co).

To know more about molar mass visit:

https://brainly.com/question/30766772

#SPJ11

Answer:

c

Explanation:

coniferous trees, Tianga also called Boreal forest biome (major life zone).

hope it's perfect.

Answer: C is correct.

Answer:b

Explanation:

Answer:

The correct answer is The stages happens in the cytoplasm.

Explanation:

Explanation:Cellular respiration helps in the complete breakdown of carbohydrates basiclly glucose to form carbon dioxide,water and ATP molecules as energy source.Aerobic respiration consist of 3 principle steps

   The first step is called glycolysis which deals with the catabolism of  glucose into pyruvate by 10 enzymes catalyzed reactions.

      Glycolysis occurs in the cytoplasm as many of the glycolytic enzymes are present in the cytoplasm of the cell in which the glycolysis is occuring.

Answer: not sure on actual answer, but heres a answer on a similar question with just different quantities.

Explanation: just minus the terms i got and u should be okay

Answer

The components of the r group of amino acid structure varies among different amino acids

Explanation  

As the functional group for amino acids is as:  

R-CH-COOH  

 I  

NH2  

only R differs so amino acids also differs. If R is “H” then amino acid is glycine and if R is “CH3” then amino acid is alanine. Hence, R is different for different amino acids. Other components as alpha carbon ( C ), carboxyl group ( COOH ) and amino group ( NH2 ) is fixed for every amino acid.  

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{2.997 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 49.784053\)

We have the final answer as

Hope this helps you

The heat that could be removed by 20.0 g of ethyl chloride (C₂H₅Cl) during vaporization is 39.3 kJ.

To calculate the heat removed during vaporization, we need to use the heat of vaporization and the molar mass of ethyl chloride.

Given:

Heat of vaporization = 26.4 kJ/mol

Molar mass of C₂H₅Cl = 64.5 g/mol (approximately)

First, we calculate the number of moles of ethyl chloride:

Moles = Mass / Molar mass

Moles = 20.0 g / 64.5 g/mol

Moles ≈ 0.310 moles

Next, we calculate the heat removed by multiplying the moles by the heat of vaporization:

Heat removed = Moles × Heat of vaporization

Heat removed = 0.310 moles × 26.4 kJ/mol

Heat removed ≈ 8.184 kJ

learn more about Molar mass here:

https://brainly.com/question/22997914

#SPJ4

The expected blood gas values for this patient at the time of admission of patient is option E. pH 7.51; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 24 mEq/L; Anion Gap = 12 mEq/L

A 20-year-old woman presents to the Emergency Department with persistent symptoms of palpitations, dizziness, sweating, and paresthesia. She has a history suggestive of an anxiety disorder.

To assess her condition, blood gases and electrolytes are ordered, and a positron emission tomography (PET) scan is performed. The PET scan reveals increased perfusion in the anterior portion of each temporal lobe. Based on these findings, the doctor prescribes a benzodiazepine medication.

The expected blood gas values at the time of admission can be determined by analyzing the given options:

A. pH 7.51; PaCO₂ = 49 mm Hg; [HCO₃]⁻ = 38 mEq/L; Anion Gap = 12 mEq/L

B. pH 7.44; PaCO₂ = 25 mm Hg; [HCO₃]⁻ = 16 mEq/L; Anion Gap = 12 mEq/L

C. pH 7.28; PaCO₂ = 60 mm Hg; [HCO₃]⁻ = 26 mEq/L; Anion Gap = 12 mEq/L

D. pH 7.28; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 16 mEq/L; Anion Gap = 25 mEq/L

E. pH 7.51; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 24 mEq/L; Anion Gap = 12 mEq/L

By evaluating the options, the most appropriate choice is:

E. pH 7.51; PaCO₂ = 20 mm Hg; [HCO₃]⁻ = 24 mEq/L; Anion Gap = 12 mEq/L

This option presents a higher pH (alkalosis) and a decreased PaCO₂ (respiratory alkalosis), which could be consistent with the patient's symptoms of hyperventilation due to anxiety. The [HCO₃]⁻ level within the normal range and a normal anion gap further support this interpretation.

In summary, the expected blood gas values for this patient at the time of admission are a higher pH, decreased PaCO₂, normal [HCO₃]⁻, and a normal anion gap, indicative of respiratory alkalosis likely caused by hyperventilation related to her anxiety disorder.

To know more about Blood gas values here: https://brainly.com/question/27826544

#SPJ11

In the beta oxidation pathway, the product of the enzyme acyl-coa synthetase when the starting fatty acid contains n carbons is, an acyl-CoA molecule.

The word "β-oxidation" refers to an oxidation that occurs in the fatty acid's -carbon when two carbon atoms are removed from the carboxyl end of the molecule at a time. By means of a process known as  beta oxidation, fatty acids with an even or odd number of carbon atoms as well as unsaturated fatty acids are oxidised.

The acyl-CoA molecule contains n-carbon fatty acid, which is covalently bound to Coenzyme A (CoA) through a thioester bond. The starting fatty acid is a saturated fatty acid containing n carbons, where n is an even number.

To know more about, saturated fatty acid, visit:

https://brainly.com/question/28163452

#SPJ4

Answer:

because the water/air needs to be pumped out.

Explanation:

hoped this helped! (just give it a 1 star if it didn't)

The resulting pH after adding the HNO\(_{3}\) solution is around the same as the pKa of HF, which is 3.17. Option D is the answer.

To determine the resulting pH after adding 15 mL of a 0.1 M HNO\(_{3}\) solution to 200.0 mL of a buffer made of 0.25 M HF and 0.25 M NaF, we need to consider the buffer's capacity to resist changes in pH.

The buffer consists of a weak acid (HF) and its conjugate base (F-). When an acid (HNO\(_{3}\)) is added, it reacts with the base (F-) in the buffer to form the conjugate acid (HF) and the nitrate ion (NO\(_{3}\)-).

Since the initial concentrations of HF and F- are equal (0.25 M), the buffer is at its optimal pH, which is approximately equal to the pKa of HF (3.17).

Adding the HNO\(_{3}\) solution increases the concentration of the conjugate acid (HF) and decreases the concentration of the base (F-). However, since the concentrations of HF and F- are still equal, the pH remains close to the pKa.

Therefore, the resulting pH after adding the HNO\(_{3}\) solution is approximately equal to the pKa of HF, which is 3.17.

Option D, 3.17, is the answer.

You can learn more about pH at

https://brainly.com/question/172153

#SPJ11

Answer:

collectively they're known as HYDROCARBONS

SOMEONE ANSWER DA QUESTON

Poêléing is the process of frying chicken in hot fat before wrapping it and baking it.

What is Poêléing?

In the dry-heat cooking technique known as poêléing, the food is cooked in its own juices in a covered pot, typically in the oven.

Poêléing is often referred to as butter roasting.

To know more about Poêléing go to the given link:

https://brainly.com/question/4738210

#SPJ4

A refrigerator delays the spoilage of food by slowing down the rate of chemical reactions within microorganisms. Therefore, option B is correct.

The term chemical reaction is defined as the processes, in which substances undergo a chemical change to formed new substances, with all new properties.

Higher temperatures often result in faster chemical reactions. When food is left on the kitchen counter, it can soon become bad. The process is slowed down by the refrigerator's lower temperature, which allows the same food to stay fresh for longer.

Bacteria, molds, and yeasts are all potential sources of microbial deterioration. Food's water activity plays a significant role in determining the type of food decomposition that results.

Thus, option B is correct.

To learn more about the chemical reaction, follow the link;

https://brainly.com/question/29762834

#SPJ2

When handling the sodium hydroxide solution in this experiment, a safety concern would be to wear lab gloves to protect your skin from the corrosive effects of the hydroxide. Additionally, it is important to use the solution in a fume hood to minimize exposure to harmful vapors.

The safety concern when handling the sodium hydroxide solution used in this experiment would be to wear lab gloves.Sodium hydroxide is a strong base that can cause chemical burns and skin irritation upon contact. It can also cause eye damage and respiratory irritation if inhaled. Therefore, it is important to handle it with care and take proper precautions to avoid any accidents or injuries.Wearing lab gloves is one of the important safety measures when handling sodium hydroxide solution. Lab gloves provide a barrier between the skin and the chemical, reducing the risk of skin irritation or burns. Gloves made of nitrile, neoprene, or other chemical-resistant materials are recommended for handling sodium hydroxide solution.While it is also important to keep sodium hydroxide solution away from open flames and only use it in a fume hood to avoid inhalation of fumes, these precautions are not the primary safety concern when handling the chemical. The most important safety measure is to wear appropriate personal protective equipment, such as lab gloves, to protect against contact with the chemical.

Learn more about hydroxide here

https://brainly.com/question/4251554

#SPJ11