The concentration of the solution is [tex]26.1 g CsCl/100 g H_2O[/tex].
We have 34.29 mL of water, whose density is 0.9975 g/mL. The corresponding mass of water is:
[tex]34.29 mL \times \frac{0.9975g}{mL} = 34.20 g[/tex]
8.91 g of CsCl (solute) are in 34.20 g of water (solvent). We can calculate the concentration of Bam's solution in units of g solute/100 g solvent, using the following expression.
[tex]C = \frac{mass\ solute }{mass\ solvent } \times 100 = \frac{8.91 g }{34.20 g } \times 100 = 26.1 g CsCl/100 g H_2O[/tex]
The concentration of the solution is [tex]26.1 g CsCl/100 g H_2O[/tex].
You can learn more about solutions here: brainly.com/question/3055787
In the laboratory, open-toed shoes and shorts:
a. Are potentially dangerous and should not be worn.
b. Are OK if the weather is hot.
c. Are all right if you are wearing a lab coat
d. Are OK if they are in style.
Answer:
a. Are potentially dangerous and should not be worn.
1. . Are these physical or chemical changes? a) slicing cheese
b) acid reacting with baking soda to make carbon dioxide
c) emptying a gas cylinder of air
d) cooking eggs
Answer:
physical change
slicing cheese
acid with baking soda
.......cookoing eggs
2. State a common metric unit and symbol obtained from each of the following instruments.
(a) metric ruler
(b) balance
(c) graduated cylinder
(d) thermometer
Answer:
cm
Explanation:
for short measurements
A cylinder fitted with a movable piston and filled with a gas has a volume of 188.5mL at 26.7 °C when the applied pressure is 755.2 torr. The temperature of the oil bath surrounding the cylinder was increased to 165.2 °C, and the load on the piston was changed. Careful measurement now gave a value of 210.5mL for the volume. What was the final pressure in the system, in torr? Select one:
O a. 715.5 tor O b. 576.9 torr Oc. 988 6 torr O d. 1233 torr 462.6 tor
Answer:
C
Explanation:
To find the new pressure, we will use this formula: P₁V₁/T₁ = P₂V₂/T₂
P₁ = Original pressure (755.2)
V₁ = Original volume (188.5)
T₁ = Original temperature in kelvins (26.7 + 273.15 = 299.85)
P₂ = Final Volume (?)
V₂ = Final volume (210.5)
T₂ = Final temperature in kelvins (165.2 + 273.15 = 438.35)
Here is our equation
(755.2)(188.5)/(299.85) = (210.5)P₂/(438.35)
Hopefully, you have a calculator handy because this equation will end up looking like this:
474.75471 = (0.48021)P₂
Divide both sides by the coefficient
474.75471/0.48021 = (0.48021)P₂/0.48021
P₂ = 988.64
Which is larger aliter or a quart?
Answer:
a liter is larger, hope that helps :)
Please help me please find the answer
Please do this
Please do this
Plzz
Total distance=60m+40m=100m
Total Time=6+4=10s
#a
[tex]\boxed{\sf Speed=\dfrac{Distance}{Time}}[/tex]
[tex]\\ \sf\longmapsto Speed=\dfrac{100}{10}[/tex]
[tex]\\ \sf\longmapsto 10m/s[/tex]
#b
Displacement=AC=60m
[tex]\\ \sf\longmapsto Velocity=\dfrac{Displacement}{Time}[/tex]
[tex]\\ \sf\longmapsto Velocity=\dfrac{60}{10}[/tex]
[tex]\\ \sf\longmapsto 6m/s[/tex]
#C
Distance=60mtime=5s[tex]\\ \sf\longmapsto Velocity=\dfrac{60}{5}=12m/s[/tex]
#d
The velocity of A to C is greater than Velocity from C to A
what is the oxidation number of chloride ion HClO ?
The oxidation state of Cl is +1
A hose delivers water to a swimming pool that measures 9.0 m long by 3.5 m wide by 1.75 m deep. It requires 97 h to fill the pool. At what rate in liters per minute will the hose fill the pool?
Answer:2
Explanation:
Classify these compounds as acid, base, salt, or other. Drag the appropriate items to their respective bins.
HCOOH, CH3OH, NaOH, HNO3, NaBr, NH3, CO2, KCl
HCOOH is an acid, KCL is a Salt, NaOH is a base.
Acids Bases and SaltsAn acid is defined as a substance which when dissolved in water produces hydronium ion (H3O+), neutralizes bases, tastes sour and turns blue litmus red.
Acids incldes:
HCOOH-weak acidHNO3-Strong acidA Base is a substance which in its aqueous solution produces hydroxyl ions (OH–), neutralizes acids , tastes bitter and turns red litmus blue
Bases incldes:
NaOHNH3A Salt is an ionic compound produced from the neutralization reaction of acids and bases. it is neutral substance and has no effect on litmus.
NaBrKCLThe folloing can be classifed as other or in aqueous solution as :
CO2-acidic oxide, Bronsted lewis acid CH3OH -Bronsted-Lowry acidLearn more on acids base and salts here:https://brainly.com/question/2927542
What determines the type of decay a radioisotope will undergo
The type of decay a radioisotope will undergo is determined by: the neutron to proton ratio.
An atom can be defined as the smallest unit which comprises the matter that forms all chemical elements. Thus, atoms are typically the fundamental building blocks of matter and as such determines (defines) the structure of a chemical element.
Generally, atoms are typically made up of three (3) distinct particles and these are;
Protons. Neutrons. Electrons.Isotopes can be defined as the atom of a chemical element that has the same number of protons but different number of neutrons.
This ultimately implies that, the isotopes of a chemical element have the same atomic number (number of protons) but different atomic mass (number of nucleons).
On a related note, this two distinct particles (protons and neutrons) found in the atom of a chemical element determines the type of decay or disintegration a radioisotope will undergo.
In conclusion, the type of decay a radioisotope will undergo is determined by the neutron to proton ratio.
Find more information: https://brainly.com/question/23392119
Answer: the proton : neutron ratio
Explanation:
stability
An unknown compound has the following chemical formula: where stands for a whole number. Measurements also show that a certain sample of the unknown compound contains of magnesium and of chlorine. Write the complete chemical formula for the unknown compound.
Answer: This is only a guess: The "following chemical formula: " doesn't appear on my screen. But since you mentioned Mg and Cl, I would guess MgCl2
Explanation: Mr loses 2 electrons while each Cl gains one each: Two chlorines for every 1 magnesium.
Give reasons ,Argon is an inert gas.
Answer:
The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert. Argon atoms do not combine with one another; nor have they been observed to combine chemically with atoms of any other element.So argon is an inert gas
Answer:
because argon have 8 electrons in there outmost shell
which is enough to make it stable
Homework 2
1. A scientist is attempting to check the relative atomic masses on the periodic table. He works
with three different compounds that contain only C and another compound. These are
diatomic compounds with a formula of CX. He finds the following information. If he
assumes the weight of C is 12 what is the weight of the other element and its identity.
Wt C
Wt X
Compound 1
4.2
4.9
Compound 2 3.5
4.67
Compound 3 1.3
3.47
the concepts of mole and chemical reactions, the element of the three compounds can be found.
compound 1 carbon - Nitrogen CN
compound 2 carbon - Oxygen CO
compound 3 carbon - Sulfur CS
Chemical reactions are expressed in moles of each constituent element. The mole is one of the fundamental quantities of physics and is defined as the amount of matter in 0. 012 kg of carbon 12, in practical form the moles of a given element in a chemical reaction is found with the expression
n = m / Pm
where n is the number of moles, m the mass of the element and PM the molecular weight (taken from the periodic table) of the element.
Let's apply to our compounds as the chemical formula is CX, there is an atom of each element, let's look for the moles of carbon.
compound 1
mass of coal 4.2
carbon mole
n_C = 4.2 / 12
n_C = 0.35 mol
as in the chemical reaction there is an atom of each element, there are also 0.35 moles of the unknown element, let's find its molecular weight (PM)
PM = m / n
PM = 4.9 / 0.35
PM = 14 gr / mol
When reviewing the periodic table this weight corresponds to Nitrogen(N)
The elect is Nitrogen
compound 2
carbon mass 3.5
carbon moles
n_C = 3.5 / 12
n_C = 0.29167
moles of unknown element n = 0.29167
mass of unknown element m = 4.67
molecular weight
PM = 4.67 / 0.29167
PM = 16 gr / mol
Checking the periodic table corresponds to the element Oxygen (O)
Compound 3
carbon mass 1.3
carbon moles
n_C = 1.3 / 12
n_C = 0.1083
moles unknown element n = 0.10833
mass unknown element m = 3.47
PM = 3.47 / 0.10833
PM = 32 gr / mol
In the periodic table the element Sulfur (S) has this molecular weight
Using the concepts of mole and chemical reactions, the elements of the three compounds can be found.
compound 1 carbon - Nitrogen CN
compound 2 carbon - Oxygen CO
compound 3 carbon - Sulfur CS
learn more about chemical reactions and mole here: brainly.com/question/14918587
Offering 17 points for right answer.
Does anyone know the name of Platinum +1 and Sulfur? Like the compound name?
Answer:
Platinum sulfide
Explanation:
20,000 $ give a way but answer this first
Plz
12.Write the basis of naming of the following elements. 1.Neptunium,2.Mendelevium,
Answer:juhygjdkeExplanation:
Mendelevium is named for Dmitri Mendeleev who produced one of the first periodic tables.
Abelson first found neptunium in 1940 after uranium had been bombarded by neutrons from the cyclotron at Berkeley, California. ... The element was named after the planet Neptune, which is the first planet beyond Uranus.
Answer in explanation
Explanation:
neptunium was named after the discovery of the planet neptune in september 23 1846
mendelevium was named as dimitri mendeleev
7. What is ultraviolet radiation?
Answer:
Ultraviolet radiation is a form of electromagnetic radiation that comes from the sun.
Select the arrangement that orders the compounds by increasing boiling point based on predominant intermolecular force. Please choose the correct answer from the following choices, and then select the submit answer button. Answer choices N2 < CO2 < NH3 < HF
The arrangement that orders the compounds by increasing boiling point based on predominant intermolecular force is; N2 < CO2 < NH3 < HF
The molecules that compose a substance are held together by intermolecular forces. The physical properties of a substance such as boiling points depends on the nature of intermolecular forces between substances. The greater the magnitude of intermolecular interaction between bonding atoms the higher the boiling point.
Nitrogen and CO2 molecules are only held together by weak dispersion forces. However, CO2 has a higher boiling point than N2 because CO2 has a higher molecular mass than N2.
Nitrogen is less electronegative than fluorine hence the magnitude intermolecular interaction via hydrogen bonding in HF is greater than that in NH3 consequently, the boiling point of HF is higher than that of NH3.
Learn more; https://brainly.com/question/9007693
The neutrons within the nucleus of an atom have what charge?
A)negative.
B)same as an electron.
C)same as a proton.
D)no charge.
Answer:
the answer is D.
Explanation:
your welcome :)
Answer: D). No Charge
Explanation: The neutrons within the nucleus of an atom have no charge.
Anti coagulant usend in blood sampling
Answer:
Ethylenediaminetetraacetic acid (EDTA), heparin, and citrate are the most commonly used anticoagulants (39–41). pls mark me branilest
An atom has 15 protons and 14 Neutrons. What is the atomic number of this atom?
Answer:
Silicon
Explanation:
Therefore the isotope with 14 protons and 15 neutrons is Silicon-29.
An atom has 15 protons and 14 Neutrons. The atomic number of this atom is 14 and the element is silicon.
What is the atomic number?The atomic number of an element is its total number of protons or the total number of electrons. The atomic number is written down the element. It can be calculated by knowing the numbers of protons and electrons.
The element here is silicon, whose number of protons, electrons, and neutrons are equal, which is 14. These are the charged particles that are present in the atoms of the element.
The number of band protons is equal to an element. The atomic number will be its number of protons. The isotope with 14 protons and 15 neutrons is Silicon-29.
Thus, the atomic number of the element is 14 if it has 15 protons and 14 Neutrons. The element is silicon.
To learn more about an atomic number, refer to the link:
https://brainly.com/question/8834373
#SPJ2
Which one of the following is NOT the unit of wave number:
m-1
cm-1
mm-1
cm
Answer:
e
Explanation:
cm is not the unit of wave number out of the following.
What is a wave number?Definition: Total number of wave cycles present in a unit distance is termed a wave number.
Wave number is always a reciprocal of the unit of distance.Wave number is denoted by the letter 'k'.The formula for wave number is 2π/λ where λ is the wavelength. Since wave number is always reciprocal, cm is not the unit for a wave number. The higher the wave number, the higher the frequency and energy.To learn more about wave number, refer to:
https://brainly.com/question/8304265
#SPJ2
Mannose is a type of sugar that consists of C, H and O and its relative molecular mass is 180. If 2.36 g sample of mannose contains 0.9444 carbon and 0.158 g hydrogen , calculate the molecular formula.
Answer:
I think CH2
Explanation:
I am not so sure
C H
×
2 1
why is mitochondria called the power house of a cell ?
Answer:
Hey mate....
Explanation:
This is ur answer....
Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell.
Hope it helps!
Brainliest pls!
Follow me! :)
We are driving to Orlando. The sign says
that it is 145 kilometers to Orlando.
How many meters is it to Orlando?
A: 0.145
B: 145,000
C: 14.5
D: 14,500
Answer:
b
Explanation:
there is 1000m in 1 km so the ans is literally just 145x1000 m which is 145000m
Answer:
B! 145,000
Explanation:
your welcome love!
topic: Nomenclature and Formula Writing.
reward: up to 200 POINTS!
how?
...
Answer: Writing Formulas for Ionic Compounds Using Nomenclature Another important concept to master is the ability to write a chemical formula using the compound's systematic name.
Explanation:
Halogens cause the torch of a flame to turn ____ when they are brought into contact with heated copper.
Answer:
Bright green
Explanation:
Halogens in ionic form, will react with copper wire. When heated in a flame, a wire that contains halogens will produce a bright, green flame.
The heating of halogens with the copper forms a bright green flame.
What is a flame test?A flame test is given as the test for the identification of the elements with the analysis of the color of flame on burning.
The elements on heating are excited to higher energy levels, and when they return, they emit the absorbed radiation in the form of light. The halogens are ionic in nature, and with the flame test in the presence of the heated copper, they liberate bright green flame.
Learn more about the flame test, here:
https://brainly.com/question/6357832
#SPJ2
An irregular object with a mass of 18 kg displaces 2.5 L of water when placed in a large overflow container. Calculate the density of the object. (answer = 7.2 kg/L or 7.2 g/mL or 7.2 g/cm3)
Answer:
7.2 kg/L
Explanation:
Density = mass ÷ volume
18 kg ÷ 2.5 L = 7.2 kg/L
The units didn't change in this scenario.
An unknown element is a mixture of isotopes ¹²⁹X and ¹³²X. The average atomic mass of X is 131.01 amu. What is the percent abundance of ¹³²X?
Answer: 67%
Explanation: The weighted averages of the two isotopes must add to 131.01. Let Y be the percentage of isotope 129. Then (1-Y) will be the percentage of isotope 132. The weighted average of each is:
129: 129Y
132: 132(1-Y)
Their sum is equal to 131.01
129Y + 132(1-Y) = 131.01
Y = 0.33, or 33%
(1-Y) = 0.67, or 67%
Check: 129*(0.33) = 42.57
132*(0.67) = 88.44
Sum = 131.01 It checks OK The 132 isotopes is 67% of the sample.
Considering the definition of atomic mass, isotopes and atomic mass of an element, the percent abundance of ¹³²X is 67%.
Definition of atomic massFirst of all, the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element.
Definition of isotopeThe same chemical element can be made up of different atoms, that is, their atomic numbers are the same, but the number of neutrons is different. These atoms are called isotopes of the element.
Definition of atomic massOn the other hand, the atomic mass of an element is the weighted average mass of its natural isotopes. In other words, the atomic masses of chemical elements are usually calculated as the weighted average of the masses of the different isotopes of each element, taking into account the relative abundance of each of them.
Percent abundance of ¹³²XIn this case, you know:
An isotope has an atomic mass of 132 amu and a percent natural abundance of y.An isotope has an atomic mass of 129 amu and a percent natural abundance of 1-y. The average atomic mass of X is 131.01 amuThen, the average mass of X can be calculated as:
132 amu×y + 129 amu×( 1-y)= 131.01 amu
Solving, you can find the percent abundance of ¹³²X:
132 amu×y + 129 amu×1 - 129 amu×y= 131.01 amu
132 amu×y + 129 amu - 129 amu×y= 131.01 amu
132 amu×y - 129 amu×y= 131.01 amu - 129 amu
3 amu×y= 2.01 amu
y= 2.01 amu÷ 3 amu
y= 0.67= 67%
Finally, the percent abundance of ¹³²X is 67%.
Learn more about average atomic mass:
brainly.com/question/4923781?referrer=searchResults
brainly.com/question/1826476?referrer=searchResults
brainly.com/question/15230683?referrer=searchResults
brainly.com/question/7955048?referrer=searchResults
Which term best describes the important pieces of information that scientists gather and record during an experiment?
conclusions
data
research
supplies
Answer:
conclusions i think i am not confirmed
Answer:
b-data
Explanation:
right on the unit test review on edge
brainliest???
a rabbit has a mass of 2 kg. what is the weight?
