What is the density of water if you have 50.0 grams of water and a volume of 50.0 millimeters

Answer: stay away from doors and windows.

Explanation:

to aviod geting hit by glass

Answer:

Stay away from doors and windows.

Explanation:

Always stay in the center of the room during a tornado storm. Avoid windows, doors, and corners. If you’re near a window, the glass can shatter and hurt you.

The following compounds that can form hydrogen bonds among their molecules in pure samples of bulk materials are CH3COOH, NH2NH2, and CH3OH.

Another molecule of the same or a different polar material is typically the object of an electrostatic attraction between a hydrogen atom in one polar molecule and a tiny electronegative atom (such as an oxygen, nitrogen, or fluorine atom). Noun for hydrogen bonds.

When a hydrogen atom that is connected to an electronegative atom moves towards another electronegative atom nearby, powerful intermolecular forces called hydrogen bonds are produced. The hydrogen bond acceptor's electronegativity will rise, resulting in a stronger hydrogen bond.

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Answer:

C3H8 + 5O2 = 3Co2 + 4 H2o

Explanation:

we can balance this equation by algebric method ( ABC method)

Answer:

precipitation means water droplets may grow as a result of additional condensation of water vapor when the particles collide. If enough collisions occur to produce a droplet with a fall velocity which exceeds the cloud updraft speed, then it will fall out of the cloud as precipitation.

Explanation:

i knew this alr

The reaction time decreases as the temperature increases of the reaction mixture increases.

A sample record of results is:

An increase in temperature leads to an increase in reaction rate or a decrease in reaction time.

The increase in temperature provides more thermal energy to the reactant molecules, which leads to an increase in the average kinetic energy of the molecules. As a result, more reactant molecules have sufficient energy to overcome the activation energy barrier and undergo successful collisions, leading to an increased reaction rate.

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Answer:

hey are the results of many experiments over a long period of time.

Explanation:

Answer:

Number of protons in Carbon - 14 atom \(6\)

Explanation:

The atomic number of carbon 14 atom is \(14\)

Number of neutrons in the nucleus of Carbon-14 atom \(= 8\)

Atomic number is equal to the sum of neutrons and protons

Number of protons in Carbon - 14 atom \(= 14 -8 = 6\)

The number of moles of carbon dioxide produced will be 8.6 moles.

First, let's look at the balanced equation of the reaction. The complete combustion of ethanol gives carbon dioxide and water as follows:

\(C_2H_5OH + 3O_2 --- > 2CO_2 + 3H_2O\)

We can see from the equation that the burning of 1 mole of ethanol produces 2 moles of carbon dioxide. In other words, the mole ratio is 1:2.

Thus, with 4.3 moles of ethanol, the amount, in moles, of carbon dioxide that will be produced will be:

                            4.3 x 2 = 8.6 moles

In other words, 8.6 moles of carbon dioxide will be produced from the complete combustion of 4.3 moles of ethanol.

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Algal blooms and high concentrations of nitrogen in water are effects of water pollution. Overgrazing and the use of chemical fertilizers cause water pollution.

Algal blooms are an effect of water pollution. They occur when there is an excessive amount of nutrients, particularly nitrogen and phosphorus, in the water due to pollution. The overgrowth of algae depletes the oxygen levels in the water, which can harm fish and other aquatic animals.

Overgrazing can cause water pollution by increasing the sedimentation rate of waterways. This sedimentation can carry nutrients, bacteria, and other pollutants into the water, which can degrade water quality and cause harm to aquatic life.

The use of chemical fertilizers to enhance production is a cause of water pollution. When fertilizer is overused, it can leach into waterways and cause nutrient pollution, which can lead to algal blooms and other forms of water pollution.

High concentrations of nitrogen in water are often an effect of water pollution. This can be caused by the overuse of fertilizers or the discharge of untreated sewage into waterways. High nitrogen levels can cause algal blooms, which can lead to oxygen depletion and harm aquatic life.

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Answer:

Cause:

: : use of chemical fertilizers to enhance production

: : overgrazing

Effect:

: : high concentration of nitrogen in water

: : algal blooms

Hope this helps ;)

Answer:

The correct answer is - exothermic reaction.

Explanation:

Exothermic reactions are the reaction that releases energy into the surrounding and does not require energy to take place due to the total energy of the reactants the total energy of the products is more than tthe total energy of the products. It releases energy usually as heat or light with the product.

In the given condition of room temperature mixing two substance produces hot products, fits with the explanation given above, therefore, it is an exothermic reaction.

Answer:

digestive system, stomach, stomach lining, then the other one

Explanation:

Answer:

Energy equals mass times the speed of light squared.

Explanation:

can i get brainliest? lol :) hope that helps

Answer:

E=mc2 means energy equals matter to the speed of light by the power of 2

Explanation:

Answer:

b. Use an AD/AS diagram to show how a decrease in the inflation target can keep inflation and short-run output from starting to rise in 2021. Explain your diagram and what it reveals about monetary policy.

Answer:

c, maybe d, and I think b.

Explanation:

Im sorry if wrong

The molarity of the solution obtained by dissolving 33 g of Beryllium hydride, BeH₂, in 6.0 Liters of solution is 0.5 M

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

Mole = mass / molar mass

Mole of BeH₂ = 33 / 11

Mole of BeH₂ = 3 moles

Molarity = mole / Volume

Molarity = 3 / 6

Molarity = 0.5 M

Thus, the molarity of the solution is 0.5 M

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Answer: The correct option is B.

Explanation:

The oxidation reaction is defined as the reaction in which a chemical species loses electrons in a chemical reaction.

A reduction reaction is defined as the reaction in which a chemical species gains electrons in a chemical reaction.

The chemical species will undergo a reduction reaction if the value of standard reduction potential is more positive or less negative.

For the given half-reactions:

\(Mg^{2+}+2e^-\rightarrow Mg(s);E^o_{Mg^{2+}/Mg}=-2.37V\)

\(Cu^{2+}(aq)+2e^-\rightarrow Cu(s);E^o_{Cu^{2+}/Cu}=+0.34V\)

As the value of standard reduction potential of copper is positive thus, it will undergo a reduction reaction and magnesium will undergo an oxidation reaction.

The half-reaction follows:

Oxidation half-reaction: \(Mg(s)\rightarrow Mg^{2+}(aq)+2e^-\)

Reduction half-reaction: \(Cu^{2+}(aq)+2e^-\rightarrow Cu(s)\)

Overall cell-reaction: \(Mg(s)+Cu^{3+}(aq)\rightarrow Mg^{2+}(aq)+Cu(s)\)

As it can be seen from the reaction that copper is forming as a pure metal in the product thus, it will be deposited and magnesium will be dissolved forming an aqueous solution.

Hence, the correct option is B.

The molar extinction coefficient is specific to the substance being measured and the wavelength of light used. Accurate and precise values for absorbance, concentration, and path length are necessary for an accurate calculation.

To calculate the molar extinction coefficient (ε) using wavelength (λ) and absorbance (A):

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The example of an Everglade species adaptation among the given choices is: Alligators dig large holes in the mud that retain water during the dry season.

What are the alligators?

Alligators in the Everglades have adapted to survive the dry season by digging "gator holes" which are large depressions in the mud that retain water. These gator holes provide the alligators with a habitat to survive during the dry season and are also important for other species in the ecosystem. Other species such as fish, turtles, and wading birds also use these gator holes as a source of water during the dry season.

Zebras having striped colorations that help them hide from predators in the grasses is an example of an adaptation seen in savanna ecosystems. Raccoons stealing eggs from bird's nests is an example of behavior, but not an adaptation specific to the Everglades ecosystem. Therefore, the correct answer is: Only the first choice is an example of an Everglade species adaptation.

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Complete question is: The example of an Everglade species adaptation among the given choices is: Alligators dig large holes in the mud that retain water during the dry season.

A pure substance is indeed a single kind of matter with a uniform and definite composition. In contrast, a mixture is made up of two or more substances that are together in the same place, but each substance maintains its own properties.

Mixtures can be classified as either homogeneous or heterogeneous. A homogeneous mixture has a uniform composition throughout, meaning its components are evenly distributed and not easily distinguishable. Examples include solutions, such as saltwater or air.

On the other hand, a heterogeneous mixture has an uneven distribution of its components, and its individual substances can be easily identified. Examples include sand and water, or oil and water.

One key distinction between a pure substance and a mixture is that a pure substance has a fixed composition, while the composition of a mixture can vary. This means that mixtures can be separated into their individual components through physical processes like filtration, evaporation, or distillation, without undergoing any chemical changes.

In summary, a pure substance is a single type of matter with a definite and uniform composition, while a mixture consists of two or more substances that are combined in the same place, but each substance retains its individual properties. Mixtures can be homogeneous or heterogeneous and can be separated into their components through physical methods.

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Answer:

2.500 × 10⁵ cal

Explanation:

1kcal= 1000 cal

From the analysis, the number of calories in each serving of a food with 250 Calories would be 250,000 calories.

According to the illustration:

               1 Calories = 1 kilocalories

The food package reports 250 Calories

Hence, 250 Calories = 1 x 250 kilocalories

                                      = 250 kilocalories

According to metrics, 1 kilocalories = 1,000 calories

Thus, 250 kilocalories = 250 x 1000 calories

                                      = 250,000 calories

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Answer:

A Violet object

Explanation:

An Violet object attracts the heat after white objects, followed by orange, yellow, green, blue, indigo and violet, which attracts the most heat of any visible color other than black.

Pounds of gold ore :  11,02311

Given

5 g of gold

0.1% gold by mass

Required

Pounds of gold ore

Solution

\(\tt \%mass~gold=\dfrac{mass~gold}{mass~ore}\times 100\%\)

For percent mass = 0.1%, than mass of gold ore :

\(\tt 0.1\%=\dfrac{5~g}{mass~ore}\times 100\%\\\\mass~ore=\dfrac{5\times 100}{0.1}\\\\mass~ore=5000~g\)

Conversion factor :

1 g = 0,00220462 pound, than for 5000 g = 11,02311 pounds

Answer:

I think is D not sure

Explanation:

In an ecosystem, the corals need the strong water currents found here in order to find sufficient mates.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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Answer:

NaCl in water; ion-dipole interaction

Explanation:

Sodium chloride is an ionic solid. Ionic solids dissolve in water due to ion dipole interaction. Ionic solids are composed of an ion pair which are strongly bound by electrostatic interaction between the oppositely charged ions in the solid state.

When an ionic substance is dissolved in water, the positive ion interacts with the negative end of the dipole in water while the negative ion interacts with the positive end of the dipole in water. Hence the ions are pulled apart by this ion-dipole interaction and the crystal structure of the solid collapses as the ionic solid dissolves in water.

Sodium chloride is an ionic solid. Interaction between the sodium ion and the negative end of the dipole in water as well as chloride ion and the positive end of the dipole in water leads to the dissolution of sodium chloride solid in water. This is the strongest solute-solvent interaction in the list.

When The strongest solute-solvent interactions and the interaction the correct option is A NaCl in water; ion-dipole interaction

Sodium chloride is an ionic solid. Ionic solids liquefy in water due to ion-dipole interaction. Ionic solids are formed of an ion team that is strongly bound by electrostatic interaction between the differently delegated ions in the solid-state.

When an ionic substance is disbanded in water, the positive ion interacts with the negative end of the dipole in the water while the opposing ion interacts with the positive end of the dipole in water. Therefore the ions are dragged apart by this ion-dipole interaction and also when the crystal configuration of the solid collapses as the ionic solid dissolves in water.

Sodium chloride is an ionic solid. The interchange between the sodium ion and the negative future of the dipole in water as well as the chloride ion and the positive end of the dipole in water leads to the abolishment of sodium chloride solid in water. This is the strongest solute-solvent exchange on the list.

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The isotropic, nematic, cholesteric (or helical), and smectic phases of liquid crystals are discussed.

What does crystal phase transition entail?

A fundamental occurrence that modifies the functionalities of solid-state materials is known as a structural phase transition. It is generally known that structural phase transitions result from variations in temperature and pressure and significantly alter the solid's physical characteristics.

What distinguishes solid crystal from liquid crystal?

The most significant experimental differences between solid crystals and liquid crystals with three-dimensional order are thought to be the formation of twisted structures in liquid crystals with optically active molecules but not in solid crystals, and the mixing of similar liquid crystal phases of various compounds.

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From the solution that we have in the question;

The equilibrium constant, denoted as K, is a value that quantitatively represents the ratio of the concentrations of products to reactants at equilibrium in a chemical reaction.

It is a fundamental concept in chemical equilibrium.

The value of the equilibrium constant provides valuable information about the position of equilibrium and the relative concentrations of species involved in a chemical reaction.

Kc = [X] [Y]/[XY]

\(0.25 = (0.1 + x)^2/(0.5 - x)\)

\(0.25(0.5 - x) = (0.1 + x)^2\)

\(0.125 - 0.25x =0.01 + 0.2x + x^2\\ x^2 + 0.45x - 0.115 = 0\)

x = 0.18 M

The equilibrium amount of X and Y=  0.28 M and the equilibrium concentration of XY = 0.32 M

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Based on the answer to the question that we have;

The ratio of the product to reactant concentrations in a chemical reaction at equilibrium is represented quantitatively by the equilibrium constant, abbreviated as K.

It is a cornerstone of the theory of chemical equilibrium.

A chemical reaction's equilibrium position and the relative concentrations of the species involved can both be learned from the equilibrium constant's value.

Kc = [X][Y]/[XY]

\(0.25 = (0.1 + x)^2/(0.5 - x)\\0.25(0.5 - x) = (0.1 +x)^2\\0.125 - 0.25x = 0.01 +0.2x +x^2\\= 0.18 M\)

The equilibrium concentration of;

XY =0.5 - 0.18

=0.32 M

Then the equilibrium amount of

X and Y is

0.1 + 0.18= 0.28 M.

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2-bromopropane molecules would be most favorable to undergo an E2 reaction rather than an SN2 reaction with NaOH. Here option B is the correct answer.

An E2 reaction occurs when a strong base removes a proton from a beta-carbon adjacent to a leaving group, leading to the formation of a double bond and the departure of the leaving group. An SN2 reaction, on the other hand, involves a nucleophile attacking the carbon bearing the leaving group while the leaving group departs.

The relative favorability of E2 and SN2 reactions depends on the strength of the nucleophile and the base, the steric hindrance around the carbon bearing the leaving group, and the nature of the leaving group.

In this case, NaOH is a strong base, and the molecule that is most favorable to undergo an E2 reaction is the one with the least steric hindrance around the carbon bearing the leaving group, which is 2-bromopropane. The other molecules have more steric hindrance around the carbon bearing the leaving group, making them less favorable to undergo E2 reactions.

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Complete question:

Which of the following molecules would be most favorable to undergo an E2 reaction rather than an SN2 reaction with NaOH?

a) 1-bromopropane

b) 2-bromopropane

c) 1-chloropropane

d) 2-chloropropane

Answer:

Hope this helps ;) don't forget to rate this answer !

Explanation:

The molar mass of a sample can be calculated using the formula:

Molar mass = (molecular weight) / (number of moles)

To find the molar mass, we first need to find the molecular weight of the sample. The molecular weight is the weight of a single molecule of the substance in atomic mass units (amu).

To find the molecular weight, we need to convert the weight of the molecule from grams to amu. One amu is equal to 1.66 x 10^-24 grams.

So, to convert the weight of the molecule from grams to amu, we can divide the weight of the molecule (5.34 x 10^-23 grams) by the conversion factor (1.66 x 10^-24 grams/amu):

Molecular weight (amu) = (5.34 x 10^-23 grams) / (1.66 x 10^-24 grams/amu)

= 3.22 x 10^-22 amu

Now that we have the molecular weight, we can use it to calculate the molar mass. However, we need to know the number of moles in order to do this. Without this information, it is not possible to calculate the molar mass.

Answer:

i agree

Explanation: