What do you call a rock that cooled rapidly outside a
volcano?

Answer:

59.46 g

Explanation:

To answer this question, the molecular weight of ammonium sulfate must be computed.  To accomplish this, the weights of the individual elements must be noted.
N=14.01\(\frac{g}{mol}\)

H=1.01\(\frac{g}{mol}\)

S=32.07\(\frac{g}{mol}\)

O=16.00\(\frac{g}{mol}\)

To compute the molecular weight:

\(2[14.01\frac{g}{mol}+4(1.01\frac{g}{mol})]+32.07\frac{g}{mol}+4(16.00\frac{g}{mol})=132.14\frac{g}{mol}\)

To calculate the mass:

\(0.45 mol(\frac{132.14g}{1mol})=59.463g\)

The increased use of non-renewable resources, rising pollution levels, global warming, and the possible loss of natural ecosystems are all effects of economic expansion on the environment.

Many human activities such as overcrowding, pollution, the use of fossil fuels, and forestry have an adverse effect on the physical environment. Global warming, soil degradation, poor air quality, even undrinkable water have all been brought on by changes like these.

Several particular environmental problems can be detrimental to people's health and wellbeing. Environmental contamination, air pollution, global warming, pathogenic bacteria, lack of healthcare access, insufficient infrastructure, or poor water quality are some of these problems.

To know more about natural visit:

https://brainly.com/question/15325233

#SPJ1

Answer:The empirical formula for this vitamin : C₃H₄O₃

Further explanation  

The empirical formula is the smallest comparison of atoms of compound =mole ratio of the components

The principle of determining empirical formula

Determine the mass ratio of the constituent elements of the compound.  

Determine the mole ratio by dividing the percentage by the atomic mass

Mass of C in CO₂ :(MW C = 12 g/mol, CO₂=44 g/mol)

Mass of H in H₂O :(MW H = 1 g/mol, H₂O = 18 g/mol)

Mass O = Mass sample - (mass C + mass H) :

mol ratio C : H : O =

Explanation:

Gravity is a (n) force between objects and depends on an object's size and their distance apart.

Gravitational force is the attractive that exist between all object with mass an object with mass attracts another object with mass the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects

Know more about objects

https://brainly.com/question/27786016

#SPJ1

Expressing the answer in exponential form we get 3⁴.

To simplify the expression (3⁷/(3³), we can apply the properties of exponents. When dividing two exponential expressions with the same base, we subtract the exponents.

In this case, we have 3⁷ divided by 3³, which can be simplified as:

3⁽⁷⁻³⁾

3⁴

Therefore, the simplified expression is 3⁴.

To understand why we subtract the exponents when dividing, we can break down the steps.

The expression 3⁷ represents 3 multiplied by itself seven times:

3 × 3 × 3 × 3 × 3 × 3 × 3.

The expression 3³ represents 3 multiplied by itself three times:

3 × 3 × 3.

When dividing these two expressions, we can cancel out common factors by subtracting the exponents:

(3 × 3 × 3 × 3 × 3 × 3 × 3) / (3 × 3 × 3)

This simplifies to:

3 × 3 × 3 × 3

Which is equivalent to 3⁴.

Thus, the answer in exponential form is 3⁴

Learn more about properties -

brainly.com/question/29547278

#SPJ11

Represent Electron of Carbon as dot (•) and that of halogen as cross (×)

Lewis dot diagram

The lewis dot diagram of the C₂IBr is shown in the attached diagram below.

A lewis electron dot structure represents the bonding atoms, the number of bonds, and the lone pairs left in the atoms in the molecule.

As the valence electrons of carbon, bromine, and iodine are four, seven, and seven electrons respectively.

First, the total number of valence electrons present in the molecule is 4 + 4 + 7 + 7 = 22.

As carbon is the least electronegative atom among C, Br, and I so it takes the central atom of the molecule or ion. Generally, the lone pairs of electrons are assigned to the most electronegative atoms first in the molecule.

As every atom does not have complete an octet once the lone pairs are assigned then a triple bond must be drawn to complete the octet of each atom.

Learn more about the lewis dot diagram, here:

https://brainly.com/question/14091821

#SPJ5

Answer:

o.99

Explanation:

Answer:

2:8

Explanation:

The reaction equation is a given as:

         2C₄H₁₀   +    130₂   →    8CO₂     +     10H₂O  

From the reaction equation, the mole ratio is 2:8

Butane is C₄H₁₀

Carbon dioxide CO₂

From the reaction;

       2 moles of butane will produce 8 moles of carbon dioxide

Answer:

A) 2:8

Explanation:

Took the quiz and was right

Answer:

objective reading

Explanation:

In objective reading, the facts and data are considered and analyzed. The purpose of objective reading is to rely on facts and to build a constructive approach. The results are analyzed and are not subject to any further interpretations. Also, the results are not influenced by any emotional perspective. The opinion and subjective approach is not followed in objective reading.

Answer:yea I agree with the chemistry part it’s close to science

Explanation:

Answer:

salt is solute,water solvent, the mixture is the solition.

A student dissolves 15 grams of salt in 250 mL of water. The solute is salt and the solvent is water.

A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.

For solutions with components in the same phase, the substances present in lower concentration are solutes, while the substance present in highest abundance is the solvent.

Therefore, A student dissolves 15 grams of salt in 250 mL of water. The solute is salt and the solvent is water.

Learn more about Solutions, here:

https://brainly.com/question/30665317

#SPJ3

The statement that is a characteristic of water is strong cohesion. Details about characteristics of water can be found below.

Water is a unique molecule which is attributed to its unique characteristics or features.

Water is made up of two hydrogen atoms and one oxygen atom that are chemically bonded to one another.

Some of the characteristics of water are as follows:

Therefore, the statement that is a characteristic of water is strong cohesion.

Learn more about water at: https://brainly.com/question/19920929

#SPJ4

The law of conservation of matter, also known as the law of conservation of mass,  can not be creastates that in a unrestricted system, the total mass of the system remains constant or destroyed.

This means that during any physical or chemical process, the total mass of the reactants must be equal to the total mass of the products. The law of conservation of matter is particularly applicable to chemical responses involving oxygen, hydrogen, and carbon  patches.

These  patches are generally set up in organic  composites and are involved in  numerous important chemical responses. the law of conservation of matter is essential for understanding and  prognosticating the issues of chemical responses, particularly those involving oxygen, hydrogen, and carbon  patches.

Learn more about law of conservation of energy at

https://brainly.com/question/30825497

#SPJ4

H3O+ is overexposed before the equivalency point. By deducting the amount of additional OH- from the amount of starting H3O+ then dividing by the total volume, you may determine the [H3O+].

The capacity of an object is expressed in terms of volume. A cup's capacity is described as 100 ml, for instance, if it can hold 100ml in its brim. The quantity of space a three-dimensional item takes up can also be referred to as volume.

A three-dimensional object's volume, which is expressed in cubic units, is the amount of space it takes up. The cubic units cm3 and in3 are two examples. On the other hand, mass is a measurement of the amount of matter in an item. How much an object weighs is frequently used to determine mass.

To know more about volume  visit:

https://brainly.com/question/1578538

#SPJ4

The molality of HCl in the solution is\(0.00122 mol/kg\)

Molality is defined as the number of moles of a solute in one kilogram of a solvent. In this case, the solvent is water.

To calculate the molality, we first need to calculate the molarity of the solution. Molarity is defined as the number of moles of a solute in one liter of solution.

To calculate the molarity, we need to know the mass of the solute (HCl) and the volume of the solution. The mass of the solute can be calculated using the density of the solution (1.22 g/ml):

Mass of HCl =\(Density * Volume\)

Volume = \(\frac{Mass}{Density }\)

Volume =\(\frac{(12.0 mol/L) }{ (1.22 g/ml) }= 9.839 L\)

Molarity = \(\frac{ (12.0 mol/L) }{(9.839 L) }= 1.22 mol/L\)

Now, we can calculate the molality:

Molality = \(\frac{ (1.22 mol/L) }{(1000 g/kg) }= 0.00122 mol/kg\)

Therefore, the molality of HCl in the solution is \(0.00122 mol/kg\).

learn more about Molality Refer:brainly.com/question/26921570

#SPJ4

Answer:

nervous system- sends signals to the brain

respiratory system- sends oxygen to the body

To calculate the standard Gibbs free energy change (ΔG°rxn) for the given reaction, we can use the equation:ΔG°rxn = ΔH°rxn - TΔS°rxn, Given: ΔH°f (kJ/mol) values:HNO3(aq): -207.0 kJ/mol, NO(g): 91.3 kJ/mol, NO2(g): 33.2 kJ/mol and H2O(l): -285.8 kJ/mol.

S° (J/mol∙K) values:

HNO3(aq): 146.0 J/mol∙K

NO(g): 210.8 J/mol∙K

NO2(g): 240.1 J/mol∙K

H2O(l): 70.0 J/mol∙K

Let's calculate the ΔH°rxn:

ΔH°rxn = [3 × ΔH°f(NO2(g))] + [ΔH°f(H2O(l))] - [2 × ΔH°f(HNO3(aq))] - [ΔH°f(NO(g))]

ΔH°rxn = [3 × 33.2 kJ/mol] + [-285.8 kJ/mol] - [2 × (-207.0 kJ/mol)] - [91.3 kJ/mol]

ΔH°rxn = 99.6 kJ/mol - 285.8 kJ/mol + 414.0 kJ/mol - 91.3 kJ/mol

ΔH°rxn = 136.5 kJ/mol

Calculate the ΔS°rxn:

ΔS°rxn = [3 × S°(NO2(g))] + [S°(H2O(l))] - [2 × S°(HNO3(aq))] - [S°(NO(g))]

ΔS°rxn = [3 × 240.1 J/mol∙K] + [70.0 J/mol∙K] - [2 × 146.0 J/mol∙K] - [210.8 J/mol∙K]

ΔS°rxn = 720.3 J/mol∙K + 70.0 J/mol∙K - 292.0 J/mol∙K - 210.8 J/mol∙K

ΔS°rxn = 287.5 J/mol∙K

Now, we can calculate ΔG°rxn using the equation:

ΔG°rxn = ΔH°rxn - TΔS°rxn

If we assume a standard temperature of 298 K, we can substitute the values: ΔG°rxn = 136.5 kJ/mol - (298 K * 0.2875 kJ/mol∙K)

ΔG°rxn = 136.5 kJ/mol - 85.57 kJ/mol

ΔG°rxn ≈ 50.93 kJ/mol

The calculated ΔG°rxn is positive (+50.93 kJ/mol). Therefore, based on the given options, the closest answer is: +50.8 kJ

Learn more about standard Gibbs free energy here ;

https://brainly.com/question/30654218

#SPJ11

The molar concentration of NaOH in the solution used for the titration is 0.404 M.

To determine the molar concentration of NaOH in the solution used for the titration, we need to use the stoichiometry of the balanced chemical equation. The balanced equation for the reaction between HCl and NaOH is:

HCl + NaOH -> NaCl + H₂O

From the equation, we can see that the ratio between HCl and NaOH is 1:1. This means that one mole of NaOH reacts with one mole of HCl.

Given the volume of HCl gas (200 mL) and its pressure (690 Torr), we can use the ideal gas law to calculate the number of moles of HCl:

PV = nRT

Where:

P = pressure in atmospheres (convert Torr to atm)

V = volume in liters (convert mL to L)

n = number of moles

R = ideal gas constant (0.0821 L·atm/(mol·K))

T = temperature in Kelvin (convert Celsius to Kelvin)

First, convert the temperature to Kelvin:

T = 20.8°C + 273.15 = 294.95 K

Convert the pressure to atmospheres:

690 Torr = 690/760 atm = 0.9079 atm

Convert the volume to liters:

200 mL = 200/1000 L = 0.2 L

Now, we can calculate the number of moles of HCl:

n(HCl) = (0.9079 atm * 0.2 L) / (0.0821 L·atm/(mol·K) × 294.95 K) ≈ 0.0093 mol

Since the ratio between HCl and NaOH is 1:1, the number of moles of NaOH used in the titration is also 0.0093 mol.

The volume of NaOH solution used in the titration is 15.7 mL, which is equivalent to 0.0157 L. Now we can calculate the molar concentration of NaOH:

Molarity = (moles of solute) / (volume of solution in liters)

Molarity = 0.0093 mol / 0.0157 L ≈ 0.404 M

Therefore, the molar concentration of NaOH in the solution used for the titration is approximately 0.404 M.

Learn more about molar concentration

https://brainly.com/question/21841645

#SPJ11

almost every lab uses chemicals of some sort, chemical safety rules are a must. Following these policies helps employees avoid spills and other accidents, as well as damage to the environment outside of the lab.

Explanation:

We need to follow these because working in the laboratory is more dangerous and to avoid this we need to Know the precautions and dangers governing the lab to prevent accident

Answer:

the answer base on my test or experiment is H2O(water)

Answer:

2.38 mol of Al

Explanation:

To find the number of moles in a substance, you simply divide by the atomic mass. In this case, the conversion table would look as follows:

\(\frac{64.1 g}{1}\) * \(\frac{1 mol}{26.98 g}\)

The gram units cancel, and you are left with the answer of about 2.38 moles of Aluminum.

The chemical formula for francium phosphide is FrP.

A chemical formula is described as a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

There are three main types of chemical formulas which include :

Learn more about chemical formulas at: https://brainly.com/question/11574373

#SPJ1

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

Learn more about heat exchangers at https://brainly.com/question/17029788

#SPJ11

If we a 1.5 volt battery is replaced by a 3 volts battery, the current in the circuit will double

From Ohm's law,

Voltage (V) = Current (I) × resistance (R)

V = IR

If R is constant, we have:

V / I = R

V₁ / I₁ = V₂ / I₂

Where

Now, we shall determine the current when the voltage is 3 volts. Detials below:

V₁ / I₁ = V₂ / I₂

1.5 / I = 3 / I₂

Cross multiply

1.5 × I₂ = I × 3

Divide both side by 1.5

I₂ = ( I × 3) / 1.5

I₂ = I ×2

Thus, we can conclude that the current will double

Learn more about current:

https://brainly.com/question/23754329  

#SPJ1

Answer:The zero to the left of a decimal value less than 1 is not significant. All trailing zeros that are placeholders are not significant. Zeros between non-zero numbers are significant.

Explanation:I hoped i have helped u have an wonderful day or night

The option that isn't a reason why the actual yield is less than theoretical yield is B. conservation of mass.

It should be noted that the formula for the percent yield is given as:

= Actual yield / Theoretical Yield × 100

Actual yield can be less than theoretical yield due to the presence of impure reactants ,competing side reactions, and loss of product during purification.

In conclusion, the correct option is B.

Read related link on:

https://brainly.com/question/23854893

Answer:

You can model a substance doing a Lewis structure

And also you can model it doing a bond-line structure.

Answer:

V₂ = 290.3 cm³

Explanation:

Given data:

Initial pressure = 882 KPa

Initial volume = 312 cm³

Final pressure = 948 KPa

Final volume = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

882 KPa× 312 cm³ = 948 KPa × V₂

V₂ = 882 KPa× 312 cm³/ 948 KPa

V₂ = 290.3 cm³

Answer:

The melting point is the temperature at which a solid changes into a liquid. The melting point of a solid is the same as the freezing point of the liquid. At that temperature, the solid and liquid states of the substance are in equilibrium. For water, this equilibrium occurs at 0°C.

Explanation:

Answer:  Heat or pressure causes the phase change from solid ice to liquid water.

Answer:

because the water brings a cool breeze when the wind blows

Explanation:

Hydrogen has a high calorific value, meaning that it can produce a lot of energy when burned.

What is high calorific value?

High calorific value (HCV) is the amount of energy released when a fuel is burned. It is measured in joules or kilojoules per kilogram of fuel, and is used to compare different types of fuel. HCV is important, because it helps to determine the efficiency of a fuel, as well as its cost effectiveness. The higher the HCV, the more energy a fuel will produce from a given amount, making it cost effective and efficient. Different fuels have different HCV values, and the higher the HCV, the more efficient the fuel is.

However, it is not used as a fuel due to its explosive nature. When hydrogen combusts, it produces large amounts of heat and light in a very short period of time. This can cause an explosion if the reaction is not properly controlled. Therefore, hydrogen is not used as a fuel in most applications due to safety concerns.

To learn more about high calorific value
https://brainly.com/question/29429802

#SPJ1