how many nítrate ions are present in 5.7 moles of calcium nitrate?

Answer:

Equivalent compounds:

4. Carbon monoxide

5. Carbon dioxide

Covalent compounds:

1. Hydrogen oxide

2. Ammonia

3. Methane

Explanation:

Hope it helps!!

The attraction of a metallic cation for delocalized electrons is known as "metallic bonding".

This type of bonding occurs when the valence electrons of the metal atoms become delocalized and form a "sea of electrons" that all the metal cations are able to move around in. This movement of electrons allows the metal cations to have electrostatic interactions with each other, leading to strong bonding.

The attraction of a metallic cation for delocalized electrons is known as metallic bonding.Metallic bonding refers to the bonding between metallic atoms. The valence electrons of the metallic atoms, in this case, are free to move throughout the entire crystal, creating a “sea” of electrons.

The positively charged metallic ions are then held together by this sea of electrons. The attraction between the positively charged metal ions and the negatively charged electron sea is known as metallic bonding.In metallic bonding, the valence electrons are delocalized and shared between many atoms, resulting in strong bonds.

These electrons are free to move throughout the metal lattice, resulting in high electrical and thermal conductivity as well as malleability and ductility. Metals also have high melting and boiling points, which is also a result of the strong metallic bonds between the atoms.

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Respuesta:

16,7 mL

Explicación:

Paso 1: Información provista

Paso 2: Calcular el volumen de la solución concentrada

Queremos preparar una solución diluida de hipoclorito de sodio a partir de una concentrada. Podemos calcular el volumen inicial que debemos tomar usando la regla de dilución.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0,5% × 200 mL / 6% = 16,7 mL

Answer:

A mid-ocean ridge is an underwater mountain range, formed by plate tectonics.Mid-ocean ridges represent one of the most important geologic processes shaping the Earth

Answer: Yes, sulfuric acid is highly soluble in water.

Explanation:

The only elements that make up organic compounds are in option A. Carbon, hydrogen, oxygen, and nitrogen.

Organic compounds are compounds that primarily consist of carbon and hydrogen atoms. However, organic compounds can also contain other elements such as oxygen and nitrogen, which are commonly found in biological molecules. Carbon forms the backbone of organic compounds, providing the structural framework, while hydrogen is frequently bonded to carbon. Oxygen and nitrogen are also essential elements in organic compounds, participating in various functional groups and forming bonds with carbon and hydrogen.

Therefore, option A (Carbon, hydrogen, oxygen, and nitrogen) is the correct choice as it includes the elements that are predominantly found in organic compounds.

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Answer:  the formula of the molecule is CH₂O.

Explanation:

Based on the given information, let's determine the formula of the molecule.

Let's assign variables to represent the number of atoms of each element:

C = number of carbon atoms

H = number of hydrogen atoms

O = number of oxygen atoms

According to the information provided:

For every carbon atom, there are twice as many hydrogen atoms, so H = 2C.

The molecule has the same number of oxygen atoms as carbon atoms, so O = C.

Using these relationships, we can express the formula of the molecule:

C H₂Oₓ

The subscripts indicate the number of atoms for each element. Since the number of oxygen atoms is the same as the number of carbon atoms (C), we can simplify the formula to:

CH₂O

Gas that will condense at the lowest pressure is butane.

Condensation is the process in which molecules of a gas slow down, come together, and form a liquid when exposed to pressure. When gas molecules transfer their energy to something cooler, they slow down and their attractions cause them to bond to become a liquid.

At constant temperature, condensation occurs at the lowest pressure of the gas with the strongest intermolecular forces or interactions.

The gas that condenses at the lowest pressure is butane.

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Answer:

57

Explanation:

a mass number is protons plus neutrons so we add them

30+27

57

Hopes this helps please mark brainliest

Answer:

57

Explanation:

the other guy is right

The heat generated by the reactor core of a nuclear power plant used to provide power to buildings by generating steam, which turns a turbine, powering a generator and the correct option is option C.

Nuclear power plants are a type of power plant that use the process of nuclear fission in order to generate electricity.

The steam is used to spin large turbines that generate electricity. Nuclear power plants use heat produced during nuclear fission to heat water.

In nuclear fission, atoms are split apart to form smaller atoms, releasing energy. Fission takes place inside the reactor of a nuclear power plant.

Nuclear power plants are very similar to coal-fired power plants. However, they require different safety measures since the use of nuclear fuel has vastly different properties from coal or other fossil fuels.

Therefore,  The heat generated by the reactor core of a nuclear power plant used to provide power to buildings by generating steam, which turns a turbine, powering a generator and the correct option is option C.

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2.19 liters of oxygen at 350 °C and at 5.25 atm are needed to convert 5.00 g of S to SO₃.

Using the equation-  S + 3/2 O₂ → SO₃

Moles of sulfur- 5/32 = 0.15 mol

Given the stoichiometry, we require- 3/2 * 0.5

Mol of dioxygen gas = 0.225 mol.

And now we solve for volume in the Ideal Gas equation as V = nRT /PV

The equation of state for a fictitious ideal gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has some restrictions, it is a good approximation of the behavior of numerous gases under various circumstances. Benoît Paul Émile Clapeyron introduced it for the first time in 1834 as a synthesis of the empirical Boyle's law, Charles' law, Avogadro's law, and Gay-Lussac's law. The empirical form of the ideal gas law is frequently used:

PV=nRT

∴V = nRT /PV

⇒0.225 mol x 0.0821L atm K⁻¹ x 623 K / 5.25

⇒V= 2.19  L

Hence, 2.19 Liters of oxygen at 350 °C and at 5.25 atm are needed to convert 5.00 g of S to SO₃.

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Answer:

That would be m = 410.76g

Explanation:

m = 1.26g/ml * 326 ml so therefore it is 410.76g

Hope this help.  

Answer: I think the alcohol molecules slip between the water molecules and take up that space, so you have less that you started with.

Explanation:

The measure of the total energy radiated by a star in one second is called luminosity.

Luminosity represents the intrinsic brightness of a star and is a measure of the total power output in terms of energy. It is an important characteristic of a star that indicates its size and temperature.

Luminosity is typically expressed in units of watts or solar luminosities (the luminosity of our Sun). Flux, on the other hand, refers to the amount of energy received per unit area per unit time, and it is influenced by the distance between the star and the observer. Apparent magnitude and absolute magnitude are measures of a star's brightness as observed from Earth and at a standard distance, respectively, and they are related to luminosity but not the direct measure of energy radiated.

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Answer:

Two objects are in thermal equilibrium if they are in close contact that allows either to gain energy from the other, but nevertheless, no net energy is transferred between them. Even when not in contact, they are in thermal equilibrium if, when they are placed in contact, no net energy is transferred between them.

Explanation:

hope this helps chloe

Food flavorings as use of pomace has become more available through new technologies

This simply refers to a dry residue of a particular material from which a liquid is extracted. However, it is highly rich in nutrients such as:

So therefore, food flavorings as use of pomace has become more available through new technologies

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Answer:

The correct answer is 15.54 kJ per degree C.

Explanation:

The enthalpy change for one mole of a substance, which combines or burns with the oxygen under the standard conditions, that is, at 25 degree C and 1 bar pressure is known as the standard molar enthalpy of combustion. The amount of heat transferred can be calculated by using the formula, q = mcΔT -------------(i)

Here q is the amount of heat transferred, c is the specific heat, ΔT is the change in temperature, and m is the mass of the substance. As in case of bomb calorimeter, mass if considered constant, thus, for calorimeter the equation mentioned will become, q = cΔT ---- (ii)

The standard molar enthalpy of combustion for carbon is -393.5 kJ/mol, that is, -393.5 kJ per mole of heat is generated by burning one mole of carbon. The molecular mass of carbon is 12 gram per mole.  

Thus, the number of moles of carbon equivalent to 0.562 grams of carbon can be determined as,  

Number of moles of carbon = mass / molecular mas

= 0.562 grams / 12 gram per mole

= 0.047 mol

The heat generated by burning 0.562 grams or 0.047 mole will be,  

q = ΔH° × number of moles

= (-393.51 kJ/mol) × 0.047 mol

= -18.49 kJ, the negative sign shows that the heat is produced.  

To find heat capacity of calorimeter, put the value of q as -18.49 kJ, for ΔT as (27.93 °C - 26.74 °C) in the equation (ii)

18.49 kJ = c × (27.93 - 26.74)

c = 18.49 kJ/1.19 °C

c = 15.54 kJ/°C

Temperature stays the same during state of matter change. After plotting the graph of temperature vs time and the curve is outlined, the moment the graph plateaus read the temperature that is constant(repeatedly occurs).

From the points given in the table of value, am sure the melting point is 78°C.

All the best!

The question is: Give the systematic name of \(P_{2}S_{3}\).

Answer: The systematic name of \(P_{2}S_{3}\) is diphosphorus trisulfide.

Explanation:

As the chemical formula of given compound is \(P_{2}S_{3}\). This sows that there are two phosphorus atoms so a prefix "di" will be added before the name of phosphorus atom.

Whereas there are three sulfur atoms present here. So, a prefix "tri" will be added before naming the sulfur atom. As sulfur is the anion so a suffix '-ide' will be added to its name.

Hence, name of the compound \(P_{2}S_{3}\) is diphosphorus trisulfide.

Thus, we can conclude that the systematic name of \(P_{2}S_{3}\) is diphosphorus trisulfide.

Answer:

Collaboration is valuable to the successful outcome of a project. It helps to decrease the amount of time and work needed. It decreases the room for error when everyone is working together.

An example would be two projects that I had in my freshman year that were overlapping each other in the same subject. We were assigned the same groups for both projects.

We corporated and divided the workload evenly and the time to finish the projects decreased. We used google documents to type and checked each other work for errors. The supplies needed were split evenly among the group.

The outcome was successful receiving an A on both projects. This was due to our communication and different knowledge. Gianna and I had more background information and research on the brine shrimp project while Jonathan and Andy had more creative ideas for the genetics projects.

Explanation:

Answer:

A !!

it a mix where everything is combined together

Answer: It se

Explanation:

the climate has cooled and became less humid

Answer:

resistance becomes lower at higher temperatures.

Explanation:

molecules expand instead of compact

Answer:

Metals have a property by which they can be beaten into thin sheets. This is called malleability.

Explanation:

one example is silver metal beaten to make silver foil used for decorating. On being struck hard, the metals produce a ringing sound. Due to the Metals that are used for various purposes, from making wires and sheets.

The amount of sensible and latent heat of mass of 0.1 kg of water will be q₁ = 9.486 kJ, q₂ = 226 kJ, q₃ = 31.5 kJ, and \(\rm q _{total } = 226.986\) kJ.

It is a branch of science that deals with heat and work transfer.

A sample of water has a mass of 100 g.

The amount of heat required to change the sample from ice at -45.0°C to liquid water at 75.0°C.

We know that the state of water from -45.0°C to 0°C is solid that requires sensible heat (q₁), 0°C solid to 0°C liquid is a transition that requires latent heat (q₂), and 0°C to 75.0°C is liquid that requires sensible heat (q₃).

m = 0.1 kg

The specific heat capacity of ice is 2.108 kJ/kg-K.

The specific heat capacity of water is 4.18 kJ/kg-K.

The latent heat of water at 0°C is 2260 kJ/kg.

The sensible heat is required for ice from -45.0°C to 0°C will be

q₁ = m × c × (T₂ - T₁)

q₁ = 0.1 × 2.108 × [0 - (-45)]

q₁ = 9.486 kJ

The latent heat is required for ice to water at 0°C will be

q₂ = m × LH

q₂ = 0.1 × 2260

q₂ = 226 kJ

The sensible heat is required for water from 0°C to 75.0°C will be

q₃ = m × c × (T₂ - T₁)

q₃ = 0.1 × 4.18 × (75 - 0)

q₃ = 31.35 kJ

The total energy will be

\(\rm q _{total } = q_1 + q_2 +q_3\\\\q _{total } = 9.486 + 226 + 31.5\\\\q _{total } = 226.986\)

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Answer:

q1 = ⇒ 9.42 kJ

q2 = ⇒ 226 kJ

q3 = ⇒ 31.4 kJ

qtot = ⇒ 267 kJ

Explanation:

Yes, you are correct that lithium-ion batteries contain cobalt, nickel, and other metals. When these batteries are not disposed of properly, there is a risk that these metals can leak into the environment, potentially contaminating groundwater. This can pose serious environmental and health hazards.

To minimize the risks associated with improper disposal of lithium-ion batteries, it is essential to follow appropriate recycling and disposal guidelines. Many communities have designated collection points or recycling programs for batteries and electronic waste, ensuring that the toxic metals are safely contained and managed.
Moreover, research is underway to develop more sustainable alternatives to traditional lithium-ion batteries, including designs that reduce or eliminate the need for cobalt and other potentially harmful materials. This could help lessen the environmental impact of battery production and disposal in the future.
In summary, lithium-ion batteries do contain cobalt, nickel, and other metals that can contaminate groundwater if not properly disposed of. Proper recycling and disposal measures should be taken to minimize this risk, and ongoing research aims to develop more sustainable battery technologies.

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When a sample of 89.56 g  NH4NO3 dissolves in 42.05 g of water, the temperature changes from 28.69 c to 7.8 c, the heat flow (q) in this case is approximately -11,165 Joules.

To calculate the heat flow (q) in this case, we can use the equation:

q = m × C × ΔT

where:

q is the heat flow

m is the mass of the solution (water + NH4NO3)

C is the specific heat capacity of the solution

ΔT is the change in temperature of the solution

First, we need to find the mass of the solution by adding the mass of the water and the mass of NH4NO3:

Mass of solution = Mass of water + Mass of NH4NO3

= 42.05 g + 89.56 g

= 131.61 g

Next, we calculate the change in temperature:

ΔT = Final temperature - Initial temperature

= 7.8°C - 28.69°C

= -20.89°C

Now, we need to determine the specific heat capacity of the solution. Since the specific heat capacity of water is commonly used, we can assume it is approximately 4.18 J/g·°C.

Plugging the values into the equation, we can calculate the heat flow (q):

q = 131.61 g × 4.18 J/g·°C × (-20.89°C)

≈ -11,165 J

Therefore, the heat flow (q) in this case is approximately -11,165 Joules.

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No, noninvasive can not be used to study the responses of single neuron.

It is not possible to study the responses of a single neuron non-invasively using current technology. The information related to the activity of a single neuron can be studied using invasive methods such as microelectrode recordings from a single neuron. It is crucial to be cautious while performing such methods as it might damage the brain tissue.

Some non-invasive techniques like fMRI, EEG, and MEG can only record neural activity from many neurons together. EEG, fMRI, and MEG provide information on the activity of groups of neurons, but they cannot provide information on single neuron activity. Hence, invasive techniques are preferred as they can provide detailed information about the activity of individual neurons.

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