what would you most likely call a long chain of bacterial cells that are spherical in shape?

Answer: C. Na2B4O7•10H2O

Explanation:

Hope this helps :)

The formula is tetrasodium borate-Na2B4O7.10H2O

Given- 0.0132 mol Na2B4O7 and 0.1311 mol H2O

Using the molar mass of the anhydrous Na2B4O7 and its mass percentage, we can calculate the molar mass of the hydrate (if we look at it as 100% of the mass) by stoichiometry.

Molar mass of Na = (22.990 g/mol)

Molar mass of B = (10.811 g/mol)

Molar mass of O = (15.999 g/mol)

Molar mass of Na2B4O7= 2⋅22.990 g/mol +4⋅10.811 g/mol +7⋅15.999 g/mol = 201.217 g/mol

201.217g/mol : 52.8%=x g/mol : 100%

​x g/mol = 201.217 g/mol⋅100%÷52.8 %

x g/mol= 381.093 g/mol

In 381.093 g of hydrate, we have 201.217 g of anhydrous Na2B4O7 , the rest of the mass is water.

381.093g−201.217g= 179.876 g of water

Molar mass of H = 1.008 g/mol

Molar mass of O = 15.999 g/mol

Molar mass of  H2O= 1.008 g/mol+ 15.999g/mol  = 18.015 g/mol

179.876g ÷18.015 = 9.98= 10 moles of water per mole of hydrate.

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To calculate the percent by mass of water in the hydrate, it is required to compare the mass of water to the total mass of the hydrate and then express it as a percentage.

Given information,

The molar mass of 7H₂O (water) is 126.14 g/mol

The molar mass of the hydrate FeSO₄·7H₂O is 278.06 g/mol

Thus,

The percent by mass of water = (mass of water/mass of hydrate) × 100

The percent by mass of water = (126.14 g/mol / 278.06 g/mol) × 100

The percent by mass of water ≈ 45.4%

The percent by mass of the anhydrous salt = 100% - percent by mass of water

The percent by mass of the anhydrous salt ≈ 100% - 45.4%

The percent by mass of the anhydrous salt ≈ 54.6%

Therefore, the percent by mass of water in the hydrate FeSO₄·7H₂O is approximately 45.4% and the percent by mass of the anhydrous salt, FeSO₄, in the hydrate FeSO₄·7H₂O is approximately 54.6%.

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Each type of mineral has a chemical composition that is variable depending on where its found. Option C is correct.

A mineral is a naturally occurring inorganic substance and has internal structure and composition, it has crystal form and some physical properties. The mineral sometimes appears in coal beds and has been shown to replace biological materials. Minerals are essential for the healthy growth of human body. Examples of minerals essential for our body  include sodium, potassium, sodium, chlorine, magnesium, fluoride, molybdenum, selenium, iron , zinc, copper, sulphur, magnesium etc. Other examples of minerals include feldspar, quartz, mica, calcite etc.

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hydrated cucl2 have blue-green colour

Answer:

Steam

Explanation:

When lava meets the sea it cools quickly while boiling the ocean into steam. The billowing steams clouds can be deadly as they contain small glass shards of fragmented lava and acid mist from sea water.

Answer:

Abs : 1.8662 × 10^24

Explanation:

1 mol of CO2 contains 6.02 × 10^24 molecules

So, 3.1 mol of CO2 contains 6.02 × 10^24 × 3.1 mol = 1.8662 × 10^24

Answer:

C. They are basic

Answer: Homeostasis on the cellular level is controlled by the cell membrane.

Explanation:

Answer:

C

Explanation:

That's what the first guy said. lol

The activation of a motor neuron is followed by the contraction of the effector muscle in a reflex arc. A reflex arc is a quick and automatic response to a stimulus, which does not involve the brain.

A reflex arc comprises five essential components: a receptor, a sensory neuron, a center neuron, a motor neuron, and an effector. The receptor is the component that receives the stimulus. After that, the sensory neuron will transport the stimulus to the center neuron, which will decide the appropriate response.Following the center neuron's decision, the motor neuron sends a message to the effector, which produces the reaction. The reflex action is typically completed in a matter of milliseconds.

For example, the reflex arc protects you from potential hazards like touching a hot stove. After the activation of a motor neuron in a reflex arc, the contraction of the effector muscle takes place. The contraction of the effector muscle is the primary response to a stimulus that completes the reflex arc. The contraction of the effector muscle is what follows after the activation of a motor neuron in a reflex arc.

In a reflex arc, the effector muscle contracts in response to a stimulus after the activation of a motor neuron.

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C. Continuous metabolic production of free hydrogen ions

The processes of creating and breaking down glucose molecules are both examples of metabolic pathways. A metabolic pathway is a chain of related chemical reactions that feed each other. The pathway takes in a single or extra beginning molecule and, through a sequence of intermediates, converts them into merchandise.

Metabolism (stated: meh-TAB-uh-Liz-um) is the chemical reactions within the body's cells that alternate meals into power. Our bodies want this strength to do the entirety from moving to wondering to growing. particular proteins in the body manipulate the chemical reactions of metabolism.

A metabolic product is a compound produced via the cells and is excreted to the extracellular medium. it can be produced in the number one metabolism, e.g. carbon dioxide, ethanol, acetate, or lactate, or an extra complicated one, e.g. a secondary metabolite or a heterologous protein secreted to the extracellular medium.

The question is incomplete. Please read below to find the missing content.

Which normal physiologic process contributes most to the need for acid-base balance

A. Continuous organ production of bicarbonate from carbonic acid

B. Continuous alveolar exchange of oxygen and carbon dioxide

C. Continuous metabolic production of free hydrogen ions

D. Continuous kidney formation of urine from blood

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The correct answer for question 20 is: Electricity and water.

For question 3, the correct answer is: International agreements that aim to reduce the impact of human activities on the environment. Environment conventions are international agreements or treaties that are established among nations to address environmental issues and promote sustainable practices. These agreements aim to reduce pollution, conserve natural resources, protect ecosystems, and mitigate climate change. They involve negotiations and commitments from participating countries to implement measures and policies to minimize the adverse impacts of human activities on the environment.

Environment conventions are international agreements that bring together nations to collectively address environmental challenges. These agreements are crucial for promoting global cooperation and establishing frameworks for sustainable development. Through negotiations and commitments, countries work towards reducing pollution, conserving biodiversity, mitigating climate change, and preserving natural resources for future generations.

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Answer:

Answer:

Tornadoes form when warm, humid air collides with cold, dry air.

Explanation:

The denser cold air is pushed over the warm air, usually producing thunderstorms. The warm air rises through the colder air, causing an updraft. The updraft will begin to rotate if winds vary sharply in speed or direction.

// have a great day //

Answer:

your question says of the following but their isn't any of the following ):

Explanation:

But other than than that person right up above

T-buOH is not soluble in water, which is the starting material in the experiment. Solubility is a characteristic of a chemical substance that determines how easily a substance can dissolve in a solvent, making it an essential factor in determining the outcome of the experiment.

t-BuOH or tert-butyl alcohol is a clear liquid with a pleasant odor and a sweet taste. It is a type of alcohol with three carbons. When we talk about its water solubility, it is not soluble in water. T-buOH is soluble in polar solvents such as methanol and ethanol, but it is not soluble in nonpolar solvents such as hexane or heptane. The solubility of t-buOH in water can be tested through a simple experiment. One method of testing is to take a sample of t-buOH and add it to a container of water, and then mix the two to determine the solubility. It is clear that the water solubility of t-buOH is low and so it is not suitable for many applications.

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The first step to calculate the equilibrium concentration is to write the balanced equation for the ionization of formic acid in water.

The equation for this reaction is:

HCOOH + H₂O ⇌ HCOO⁻ + H3O⁺

Next, we can define the initial, change, and equilibrium concentrations of HCOOH, HCOO⁻, and H3O⁺:

Let x be the equilibrium concentration of H3O⁺ and HCOO⁻.

Initial concentration of HCOOH = 0.985 M

Initial concentration of H₂O is much larger than the initial concentration of HCOOH, so we can assume that the concentration of H₂O does not change significantly during the reaction.

   Initial concentration of HCOO⁻ and H3O+ = 0 M

   Change in concentration of HCOOH = -x

   Change in concentration of HCOO⁻= +x

   Change in concentration of H3O⁺ = +x

   Equilibrium concentration of HCOOH = 0.985 - x M

   Equilibrium concentration of HCOO⁻ = x M

   Equilibrium concentration of H3O⁺ = x M

We can now use the equilibrium constant expression to solve for x:

K = [HCOO⁻][H3O⁺]/[HCOOH]

1.8 × 10⁻⁴ = x² / (0.985 - x)

Since x is much smaller than 0.985 (the initial concentration of HCOOH), we can assume that the equilibrium concentration of HCOOH is approximately equal to the initial concentration of HCOOH. Therefore:

0.985 - x ≈ 0.985

Substituting this approximation into the equilibrium constant expression, we get:

1.8 × 10⁻⁴ = x² / 0.985

x²= 1.8 × 10⁻⁴ × 0.985

x² = 1.773 × 10⁻⁴

x = 0.0133 M

Therefore, the equilibrium concentration of H3O⁺ in a 0.985 M solution of formic acid is 0.0133 M.

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Answer:

28.1

Explanation:

plez give me brainliest

Answer:

A. ✔️Substitution

B. ✔️Insertion

C. ✔️Deletion

Explanation:

In A, the type of mutation that is shown is Substitution. In B, the type of mutation shown is Insertion and in C, the type of mutation shown is Deletion.

Mutation refers to the change in the DNA sequence. This occurs in an organism. In gene mutation, the structure of DNA molecule changes and produces a different allele of a gene. While in chromosome mutation, there is the change in the structure or number of the whole chromosomes in a particular cell.

Actually, mutations can take place both in prokaryotic cell and in eukaryotic cell.

In genetics, there are: Substitution, Insertion and Deletion mutations.

Substitution mutation is an exchange of one base for another. Insertion mutation is simply addition of one or more nucleotide pairs in a DNA sequence while Deletion mutation refers to the situation in which a sequence of DNA is left out when there is DNA replication.

Answer:

A. Substitution

B. Insertion

C. Deletion

Explanation:

A. There is a replacement in C G there is A T.

B. There is one more base.

C. There are 8 base there should be 9.

The hybridization of the central atom in a molecule determines its geometry and bonding properties. Based on the given structure XY2Z2, we can classify it into the following hybridization types:

sp: This hybridization type corresponds to a linear geometry. The central atom has two electron groups and no lone pairs. Examples of molecules with sp hybridization include BeCl2 and CO2.

sp2: This hybridization type corresponds to a trigonal planar geometry. The central atom has three electron groups, including two Y atoms and one lone pair of electrons. Examples of molecules with sp2 hybridization include BF3 and SO3.

sp3: This hybridization type corresponds to a tetrahedral geometry. The central atom has four electron groups, including two Y atoms and two lone pairs of electrons. Examples of molecules with sp3 hybridization include CH4 and NH3.

sp3d: This hybridization type corresponds to a trigonal bipyramidal geometry. The central atom has five electron groups, including two Y atoms and three lone pairs of electrons. Examples of molecules with sp3d hybridization include PF5 and SF4.

sp3d2: This hybridization type corresponds to an octahedral geometry. The central atom has six electron groups, including two Y atoms and four lone pairs of electrons. Examples of molecules with sp3d2 hybridization include SF6 and IF5.

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Answer:

Explanation:

dilute hydrochloric acid is added to distilled water to increase the ionization of water.

Answer:

5.0 moles

Explanation:

213/390 x 9.22 = 5.04

Round to least sig fig (390 ml)

5.0

(a) The number of moles of oxygen gas (O₂) that reacted is 0.00325 mol.

(b) When the experiment is repeated without a lid on the crucible, the magnesium oxide produced will react with any oxygen present in the air.

(a) To calculate the number of moles of oxygen gas (O₂) that reacted, we need to first determine the number of moles of magnesium that reacted using its atomic mass:

Mass of magnesium (Mg) = 0.12 g

Atomic mass of Mg = 24.31 g/mol (from periodic table)

Number of moles of Mg = Mass of Mg / Atomic mass of Mg

= 0.12 g / 24.31 g/mol

= 0.00494 mol

The balanced chemical equation for the reaction between Mg and O₂ to produce MgO is:

2Mg + O₂ → 2MgO

From the equation, we can see that 2 moles of Mg react with 1 mole of O₂ to produce 2 moles of MgO.

Therefore, the number of moles of O₂ that reacted can be calculated as follows:

Number of moles of MgO produced = Mass of MgO / Molar mass of MgO

= 0.20 g / (24.31 g/mol + 16.00 g/mol)

= 0.00650 mol

Since 2 moles of MgO are produced from 1 mole of O₂, the number of moles of O₂ that reacted can be calculated as:

Number of moles of O₂ = Number of moles of MgO produced / 2

= 0.00650 mol / 2

= 0.00325 mol

(b) When the experiment is repeated without a lid on the crucible, the magnesium oxide produced will react with any oxygen present in the air. This will cause the mass of magnesium oxide produced to be greater than when the experiment was conducted with a lid on the crucible, as more oxygen will react with the magnesium.

Additionally, any water vapor or other gases present in the air may also react with the magnesium oxide, further affecting the mass of the final product. Therefore, the mass of magnesium oxide produced will be different without a lid on the crucible due to the presence of additional reactants in the air.

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a. To determine the initial investment outlay for the spectrometer, we need to calculate the cash flows at Year 0. The base price of the spectrometer is $140,000, and the modification cost is $30,000.

Thus, the initial cost is the sum of these two amounts, which is

$170,000 ($140,000 + $30,000).

Additionally, we need to consider the increase in net operating working capital, which is $8,000. Therefore, the initial investment outlay for the spectrometer is

$178,000 ($170,000 + $8,000).

b. In Years 1, 2, and 3, we need to calculate the annual cash flows. Firstly, we consider the savings in before-tax labor costs, which is $50,000 per year. Next, we calculate the depreciation expense using the MACRS depreciation rates provided. In Year 1, the depreciation expense is

$140,000 * 0.33 = $46,200. In Year 2,

it is $140,000 * 0.45 = $63,000.

In Year 3, it is $140,000 * 0.15 = $21,000.

Finally, we subtract the depreciation expense from the before-tax labor cost savings to get the annual cash flows. In Year 1, it is

$50,000 - $46,200 = $3,800. In Year 2,

it is $50,000 - $63,000 = -$13,000. In Year 3,

it is $50,000 - $21,000 = $29,000.

c. To determine whether the spectrometer should be purchased, we need to calculate the net present value (NPV) of the project's cash flows. Using the WACC of 9%, we discount the cash flows in each year. The NPV is the sum of the discounted cash flows. If the NPV is positive, the project is considered favorable.

If it is negative, the project should not be pursued. In this case, we calculate the NPV by discounting the cash flows in Years 1, 2, and 3 at a rate of 9%. The NPV is calculated as: NPV = ($3,800 / (1 + 0.09)^1) + (-$13,000 / (1 + 0.09)^2) + ($29,000 / (1 + 0.09)^3). If the NPV is positive, the spectrometer should be purchased; if it is negative, it should not be purchased.

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Answer:

Answer is meter. ~~~~~~

The set B gives the set of particles that experience stronger attraction because the charges are greater. Therefore, option B is correct.

Electric charge is the physical property of matter. Charges makes to experience a force when placed in an electromagnetic field.

Positive and negative electric charges are the two types of charges commonly transported by charge carriers, protons and electrons. Energy is make up by the movement of charges.

In set B there are +4 and -4 two charges are present so, they give stronger attraction that set A.

Thus, option B is correct.

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In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.

In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.

Thus, from the above conclusion we can say that,In the given reaction Stoichiometric relationship between ammonium hydroxide and phosphoric is that 3 moles of ammonium Hydroxide is added with 1 mole of phosphoric acid in order to form 1 mole of Ammonium Phosphate and 3 moles of water.

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Answer:

Improvised health has been one of the main benefits of development. As humans, we need the primary aspects of life to keep us going. (food, water, oxygen) But scientificly we need health that will improve health. and Improved Health has been one of the main benefits of development. This benefit results partly from an increase in income and partly from scientific progress in the fight against disease and disability.

According to IUPAC nomenclature, the longest chain of this compound contains 7 carbons. Hence, the name of this compound is 4 -propyl-5-ethyl-5-phenyl heptane.

IUPAC rules are used to name the organic compounds. As per this rule, the compound is named based on the chain containing highest number of carbon atoms. The substituents are named with their prefix or suffix.

For the given compound, the longest chain contains 7 carbon atoms. Hence, the chain is named as heptane. The substituents are numbered in such a way that, they have the least possible number.

The 4th carbon contains a propyl group and a phenyl group and ethyl groups are attached on the 5th position in the longest chain. Therefore, the name of the compound is  4 -propyl-5-ethyl-5-phenyl heptane.  

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Answer:

lanthanum

Explanation:

lanthanum is an inner transition metal

if ammonia is fed to a continuous reactor at a rate of 100.0 kmol nh3/h

175 Kmol/h is oxygen the fed rate that corresponds to 40% excess O₂.

Given chemical reaction is

4NH₃ + 5O₂ → 4NO + 6H₂O

The molecular weight of NH₃ is 17.03, O₂ is 32, NO is 30, and, H₂O  is 18.

To find the ratio,

Ratio = lb-mole O₂ react / lb-mole NO formed

Or, ratio = 5/4

Or, ratio = 1.25

NH₃ fed rate = 100 Kmol/h

We have to find out whether the Oxygen fed rate corresponds to 40% excess O₂.

For each 4 Kmol of NH₃, 5 Kmol of O₂ is required.

4 Kmol of NH₃ ≡ 5 Kmol of O₂

100 Kmol of NH₃ ≡ 125 Kmol of O₂

So, 125 Kmol of O₂  is required for 100 Kmol of NH₃.

For 40% excess of O₂, the required Kmol is = 125 + 125 × 40%

The required Kmol of oxygen is 175 Kmol/h for excess of O₂.

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