you just got home from a run on a hot Atlanta afternoon. you grab a 1.00-liter bottle of water and drink three-quarters of it in one swig. How many moles of water did you consume?
Answer:
41.67 mol
Explanation:
1 Litre of water = 1000g
Mole = mass / molar mass
Mass of 1 L of water = 1000 g
Molar mass of water (H2O) :
(H = 1, O = 16)
H2O = (1 * 2) + 16 = (2 + 16) = 18g/mol
Amount of water consumed = (3/4) of 1 litre
= (3/4) * 1000g
= 750g
Therefore mass of water consumed = 750g
Mole = 750g / 18g/mol
Mole of water consumed = 41.6666
= 41.67 mol
Name any two mixture that can be separated by this distillation
Answer:
Simple distillation is used to separate salt from seawater, to separate sugar from water.
Explanation:
explain how sodium and calcium react with water. explain with equations
Reaction of sodium with water
Sodium metal reacts rapidly with water to form a colourless solution of sodium hydroxide (NaOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is exothermic. During the reaction, the sodium metal may well become so hot that it catches fire and burns with a characteristic orange colour. The reaction is slower than that of potassium (immediately below sodium in the periodic table), but faster than that of lithium (immediately above sodium in the periodic table).
2Na(s) + 2H2O → 2NaOH(aq) + H2(g)
A student conducts an experiment to determine how the temperature of water affects the time for sugar to dissolve. In each trial, the
student uses a different amount of water and a different temperature of water.
What is wrong with this experimental design?
The fact that the student used different amount of water (another independent variable) is wrong with the experimental design
WHAT ARE THE COMPONENTS OF AN EXPERIMENT?
An experiment aims at solving a scientific problem or answering a scientific question. An experiment should contain a variable being changed called INDEPENDENT VARIABLE and a variable being measured called DEPENDENT VARIABLE. In an ideal experiment, only one independent variable should be used while every other variable should be kept constant. This is done so as not to affect the result of the experiment.In the experiment conducted by the student in this question, two independent variables were used i.e. the different amount of water and the different temperatures. This is what is wrong about the experimental design.
In a nutshell, the fact that two independent variables were used by the student is what is wrong about the experimental design.Learn more at: https://brainly.com/question/967776
Answer: In an ideal experiment, only one independent variable should be used while every other variable should be kept constant.
What is the molecular formula?Write down the molecular formula of the given compounds.
i. Calcium Sulphate
ii. Sodium Carbonate
iii. Water
iv. Carbon Dioxide
v. Potassium Nitrate
vi. Ammonium Chloride
Answer:
A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
The molecular formula of the given compounds are:
CaSO4Na₂CO₃H2OCO2KNO3NH4ClI’m having trouble with this assignment please help.
Q = m.c.AT
m = 50,0 g of iron
c = 0.450 J.g-1°C-1
AT = 10°C
Thus
Q = 50 * 0.450 * 10
Q = 225 J
Is the heat energy
Hope it helps xx
Potatoes are cut into many parts, making sure that each part has at least one eye (bud). Each piece of potato will usually grow into a new potato plant. Will a new potato plant grow, if planted only with the eye? A. Yes, a full new potato plant can grow from it. B. Yes, but the new plant will take a slightly longer time to germinate. C. No, a new potato plant will not grow because the food needed for germination comes from the potato piece. D. No, a new potato plant will not grow because the leaves emerge only from the potato piece.
Answer:
b
Explanation:
the eye is the most important so it would grow but it will take some time because if we plant it with piece it has some food
Other than carbon's ability to form four covalent bonds, what is another reason that carbon can form so many compounds? its small size the ability to change shape the ability to form a diatomic molecule the ability to split its electrons
Answer: its small size
Explanation:
The law of conservation of energy states that A: energy is always created and destroyed B: energy cannot be created or destroyed C: energy is unable to change forms D: energy should be saved as often as possible
Answer:
B
Explanation:
This is the First Law of Thermodynamics which states that energy cannot be created or destroyed.
write its IUPAC name?
Answer:
Hello
please make sure that there is any group which is join with alkane
What is the name of this compound? H single bonded to N with a pair of electron dots above and a single bond to H below, single bonded to the right to C with H above and below, and another C with H above, below, and right.
Answer:
Ethanamine (also known as ethylamine)
Explanation:
The compound that is requested by the question is ethanamine. Its trivial name is ethylamine.
It is a compound that contained the ethyl moiety (CH3CH2-) as well as the amine moiety (-NH2).
Ethanamine has a structure that can easily be determined by the statements in the question.
The structure of ethanamine is shown in the image attached.
Answer:
What is the name of this compound?
H H
│ │
H ── N ── C ── C ── H
│ │ │
H H H
❌ A) ethanal
✔️B) ethylamine❌ C) ethanoic acid
❌ D) methyl ethanoate
I Took Question Test And Have Day.
A balloon is floating around outside your window. The temperature outside is 31 ∘C , and the air pressure is 0.700 atm . Your neighbor, who released the balloon, tells you that he filled it with 4.10 moles of gas. What is the volume of gas inside this balloon? Express to THREE signficant figures.
Answer:
the volume of gas inside this balloon = 146.3 L
Explanation:
Given that:
The temperature T = 31 °C = ( 31 + 273.15 )K = 304.15 K
The air pressure P = 0.700 atm
number of moles of gas n = 4.10 moles
Gas constant = 0.0821 L atm/K/mol
The objective is to calculate the volume of the gas inside the ballon.
Using the Ideal gas equation
PV = nRT
V = nRT/P
V = (4.10×0.0821×304.15)/0.700
V = 102.3799/0.700
V = 146.257 L
V = 146.3 L
Thus, the volume of gas inside this balloon = 146.3 L
What wavelength measures
A. Depth
B. Distance
C. Energy
D. Speed
E. Time
F. Volume
Answer:
Distance.
Explanation:
Wavelength (λ) can be defined as the distance between two successive crest or trough of a wave.
From the above definition, wavelength (λ) simply measures distance.
This can further be explained by obtaining the unit of measurement for wavelength (λ).
This can be illustrated below:
Wavelength is related velocity and frequency according to the following equation:
Velocity (v) = wavelength (λ) x frequency (f)
v = λf
λ = v/f
Velocity is measured in ms¯¹
Frequency is measured in hertz, Hz (s¯¹)
λ = v/f
λ = ms¯¹ / s¯¹
λ = m
We can see that wavelength is measured in metre (m) which is the same unit for measuring distance.
Therefore, wavelength measures distance.
Using your answers from part C, complete the chemical formula of each compound. If the number of ions is 1, leave that
number out of the formula.
Drag each number to the correct location. Numbers may be used more than once
Answer:
1;1, 2;1, 3;1, 1;2, 1;1, 3;2, 1;3, 2;3, 1;1.
I hope this will help.
Answer:
This is what the answer looks like
Explanation:
4 examples of ionic bonding identifying in each one the anion, the cation and demonstrate the ionic bonding by means of the electronegativity difference.
Answer:
Here are some examples
Explanation:
NaCl
Cation = Na⁺, Anion = Cl⁻; ΔEN = |0.93 - 3.16| = 2.23
MgS
Cation = Mg²⁺, Anion = O²⁻; ΔEN = |1.31 - 3.44| = 2.53
KBr
Cation = K⁺, Anion = Br⁻; ΔEN = |0.82 - 2.96| = 2.14
CaF₂
Cation = Ca²⁺, Anion = F⁻; ΔEN = |1.00 - 3.98| = 2.98
In each case, ΔEN > 1.6, so the compound is ionic.
why water can reduce unpleasant smell that produce from methane gas ?
Answer:Water contains Oxygen the purified the methane gas
Explanation:
Increasing temperature can
If the molarity of sugar is 1.1, what will the freezing point be?
Answer:
The freezing point will be -2.046°C.
Explanation:
The freezing point depression equation is [tex]\Delta T_f = k_f \cdot m \cdot i[/tex]
Where;
[tex]\Delta T_f[/tex] = The temperature depression of the freezing point
[tex]k_f[/tex]= The constant of freezing point depression which is solvent dependent = 1.86°C/m
i = The number of particles the substance decomposes into in solution = 1 for sugar (a covalent compound)
m = The molality of the solution = 1.1
Therefore, we have;
[tex]\Delta T_f = 1.86 \times 1.1 \times 1 = 2.046 ^{\circ}C[/tex]
Therefore the freezing point will be 0 - 2.046°C = -2.046°C.
Define physical and chemical properties, provide three examples of each, discuss their reversibility, and explain the fundamental differences between them.
Answer:
Physical properties are defined as the properties which can be observed without changing its chemical composition.
For example: color, volume, and molecular weight.
Chemical properties are defined as the properties which can be observed only after changing chemical identity of the substance.
For example: reactivity, toxicity, and flammability.
The fundamental differences between physical and chemical properties are as follows:
Chemical properties are related to chemical bonds of the substance while physical properties are not.In chemical properties, chemical identity of substance changes while physical properties do not have any change.Chemical properties predict the reaction of substance while physical properties only describe the appearance of the substance.
Answer:
Chemical properties are related to chemical bonds of the substance while physical properties are not.
In chemical properties, chemical identity of substance changes while physical properties do not have any change.
Chemical properties predict the reaction of substance while physical properties only describe the appearance of the substance.
Explanation:
phóng xạ và phân hạch hạt nhân
I am from Nepal i don't know this language
HELLPP ASAP, FIRST PERSON WITH THE CORRECT ANSWER WILL RECEIVE BRAINLIEST
How are the number of valence electrons and the types of ions related?
Answer:
"The number of electrons in an atom's outermost valence shell governs its bonding behaviour."
Explanation:
Credits to:
https://socratic.org/questions/how-do-valence-electrons-affect-chemical-bonding
Make sure to put in your own words
Hopefully this helps
Answer:
The number of electrons in an atom's outermost valence shell governs its bonding behaviour. ... They need to lose only one or two valence electrons to form positive ions with an s²p⁶ configuration. NONMETALS. Nonmetals tend to attract additional valence electrons to form either ionic or covalent bonds.
absorption of digested food takes place in the
Answer:
Explanation:
Absorption of digested food takes place in the small intestine.
Hope this helps
plz mark as brainliest!!!!!
Answer:
Absorption of digested food takes place in the small intestine.
Explanation:
using methyl ,phenolphthalein and litmus name an acid
Answer:
These are two types of indicators which show a solution is either an acid a natural or an alkali solution
Explanation:
Hope this helps :)
0.32 L is equal to how many mL
Which of these scientist is know for his work in understanding climate change a : edwin hubble b : christian doppler c : warren washington d : charles kuen kao
Answer: just trust me its c
Explanation: i dont cap
¿Qué ocurre cuando la radiación del sol atraviesa la atmósfera?
La luz es la fuente de energía y radiación que recibe la Tierra desde el espacio. De toda la energía que entra a la atmósfera una parte es absorbida y otra reflejada. Tanto el aire con sus partículas y moléculas gaseosas como la superficie terrestre (suelo, ciudades, bosques, mares, hielo, etc.) absorben y reflejan en diferente proporción la energía radiante entrante.
Asumiendo, que al tope (última capa) de la atmósfera llega un 100% de la radiación solar, de este total, un 20% es absorbido por las nubes y gases atmosféricos, pero también la atmósfera refleja al espacio un 6%, las nubes reflejan un 20% y el suelo refleja un 4%. El porcentaje de energía restante es absorbida por la superficie de la Tierra (¿cuánto es?).
4. Representar gráficamente los valores y la dirección de las energías radiantes absorbidas y reflejadas a partir de un valor total de energía solar entrante a la atmósfera igual al número de la suma de su fecha de nacimiento asignada previamente en unidades de vatios por cada metro cuadrado (W/m2).
Ejemplo: energía solar entrante = 2.026 W/m2
Asuma que a la atmósfera llega un 100% de la radiación solar (el valor corresponde a la suma de su fecha de nacimiento), de este total, un 20% es absorbido por las nubes y gases atmosféricos, pero también la atmósfera refleja al espacio un 6%, las nubes reflejan un 20% y el suelo refleja un 4%. El porcentaje de energía restante es absorbida por la superficie de la Tierra (¿cuánto es?).
Which of the following is not equal to 485 L?
0.485 kL
4.85 x 104 mL
48,500 cL
4.85 x 108 µL
Answer:
[tex]4.85 * 10^4\ mL[/tex]
Explanation:
Given
485 L
Required
Determine the measurement not equal to 485L
[tex]0.485\ kL[/tex]
From standard unit of conversion;
1 KL = 1000 L
Multiply both sides by 485
[tex]485 * 1 KL = 485 * 1000 L[/tex]
[tex]485KL = 485000L[/tex]
Divide both sides by 1000
[tex]\frac{485KL}{1000} = \frac{485000L}{1000}[/tex]
[tex]0.485KL = 485L[/tex] ---- This is equivalent
---------------------------------------------------------------------------------------------
[tex]4.85 * 10^4\ mL[/tex]
From standard unit of conversion;
1000 mL = 1 L
Multiply both sides by 485
[tex]485 * 1000 mL = 1 L * 485[/tex]
[tex]485000\ mL = 485\ L[/tex]
Convert to standard form
[tex]4.85 * 10^5\ mL = 485\ L[/tex]
Hence; [tex]4.85 * 10^4\ mL[/tex] is not equivalent to 485L
---------------------------------------------------------------------------------------------
[tex]48500 \ cL[/tex]
From standard unit of conversion;
100 cL = 1 L
Multiply both sides by 485
[tex]485 * 100 cL = 1 L * 485[/tex]
[tex]48500\ cL = 485\ L[/tex]
Convert to standard form
[tex]4.85 * 10^4\ cL = 485\ L[/tex] ---- This is equivalent
---------------------------------------------------------------------------------------------
[tex]4.85 * 10^8 \[/tex] μL
From standard unit of conversion;
1000000 μL = 1 L
Multiply both sides by 485
[tex]485 * 1000000uL = 1 L * 485[/tex]
[tex]485000000uL = 485\ L[/tex]
Convert to standard form
[tex]4.85 * 10^8\ uL = 485\ L[/tex] ---- This is equivalent
From the list of given options;
[tex]4.85 * 10^4\ mL[/tex] is not equivalent to 485L
Sodium hydroxide and water will react at room temperature. What does this indicate about its activation energy? A. The activation energy is very low. B. The activation energy is at exactly 600 kJ. C. The activation energy is very high. D. The reaction cannot reach activation energy.
Answer:
The answer would be C.
Explanation:
I took a test with the same question.
The activation energy is very high. Hence, option C is correct.
What is activation energy?Activation energy is the sufficient amount of energy necessary to initiate a chemical reaction.
When sodium hydroxide (NaOH) dissolves in water, it is distributed into positively-charged sodium ions and negatively - charged hydroxide ions.
These cations and anions move around in the water, free and independent of each other, though cations tend to be surrounded more closely by anions and vice versa.
Hence, when sodium hydroxide and water will react at room temperature, the activation energy is very high.
Learn more about activation energy here:
https://brainly.com/question/2410158
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As the mass of the nucleus increases, what happens to the ratio of neutrons to protons in stable isotopes? A. The neutron:proton ratio decreases. B. The neutron:proton ratio increases. C. The neutron:proton ratio remains 1:1. D. The neutron:proton ratio remains 1.5:1.
If an object is travelling 25.0 meters/second, how far will it travel in 45 minutes?
[tex]\\ \rm\longmapsto Distance=Speed(Time)[/tex]
[tex]\\ \rm\longmapsto Distance=25(2700)[/tex]
[tex]\\ \rm\longmapsto Distance=67500m[/tex]
The object travelling at 25 m/s, will travel a distance of 67500 m in 45 mins.
We'll begin by converting 45 mins to seconds. This can be obtained as follow:1 min = 60 s
Therefore,
45 mins = 45 × 60
45 mins = 2700 sFinally, we shall determine the distance travelled by the object in 2700 s (i.e 45 mins). This can be obtained as follow:Time = 2700
Speed = 25 m/s
Distance =?Distance = speed × time
Distance = 25 × 2700
Distance = 67500 mTherefore, the object will cover a distance of 67500 m in 2700 s (i.e 45 mins)
Learn more: https://brainly.com/question/14988345