Given,
Mass required to trigger a mouse trap =157grams
Mass of mouse = 4 ounces (oz)
we need to find the largest mass of cheese a mouse should carry to not set off the trap-
Firstly, we need to convert oz into grams
⇒ 4 x 28.3 = 113.2 grams
∴Mass of cheese in grams = 113.2
For the mouse to not set off the trap, mass of mouse + mass of cheese should be less than 157 grams.
⇒113.2 + mass of cheese < 157
⇒ Mass of cheese < 157 - 113.2
Mass of cheese < 43.8 gm
Hence, the mouse should carry a cheese of 43.8 grams to not set off the trap.
To learn more refer- https://brainly.com/question/27863749
#SPJ4
The mouse should carry a 43.8 grams block of cheese in order to avoid setting off.
Given,
A mouse trap requires 157 grams of mass to set off.
Mouse weight is 4 ounces (oz)
To avoid setting off the trap, we need to determine how much cheese a mouse should be able to carry.
First, we must change an ounce into grams.
4 x 28.3 equals 113.2 grams.
The mass of cheese is 113.2 grams.
Mass of mouse plus mass of cheese must be less than 157 grams for the mouse to avoid setting off the trap.
113.2 + cheese mass equals 157.
157 cheese mass - 113.2= 43.8 g of cheese total.
Hence, In order to avoid setting off the trap, the mouse should carry a 43.8-gram block of cheese.
To learn more about ounce conversion refer- https://brainly.com/question/13381077
#SPJ4
The threshold frequency for lithium is 6.00x1014 Hz. If the total energy emitted by a sample of lithium is 8.60 kJ,
a.) Calculate the number of atoms present in the sample?
b.) What is the mass of the sample in gram(s)?
The number of atoms present in the sample is 2.163 x 10²² atoms.
The mass of the sample is 0.25 g.
number of atoms present in the sampleThe number of atoms present in the sample is calculated as follows;
E = nhf
where
n is the number of atoms in the sampleh is Planck's constantf is frequency of the atomE is the total energy emittedn = E/hf
n = (8600) / (6.626 x 10⁻³⁴ x 6 x 10¹⁴)
n = 2.163 x 10²² atoms
Mass of the sample6.02 x 10²³ atoms of Lithium = 6.9 g
2.163 x 10²² atoms = ?
= (2.163 x 10²² atoms x 6.9 g) /(6.02 x 10²³ atoms )
= 0.25 g.
Thus, the number of atoms present in the sample is 2.163 x 10²² atoms. The mass of the sample is 0.25 g.
Learn more about number of atoms here: https://brainly.com/question/6258301
#SPJ1
A 15.33 gram sample of copper is heated in the presence of excess oxygen. a metal oxide is formed with a mass of 19.20 g. determine the empirical formula of the metal oxide.
The empirical formula will become CuO.
The formula of a specific chemical compound in its most basic form is known as an empirical formula. It's a condensed whole number ratio of the atoms in a formula.
Mass of copper = 15.33g
Mass of oxygen= 19.20g-15.33g = 3.87g
Calculations:
Moles of copper= 15.33 /63.54
Moles of copper =0.24
Moles of oxygen= 3.87 / 16
Moles of oxygen = 0.24
The number of moles of copper and oxygen are same. Hence, the empirical formula will become CuO.
Learn more empirical formula about here;
https://brainly.com/question/14044066
#SPJ4
How many constitutional isomers are possible if propane is dichlorinated?
1 2 3 4 5
The correct answer of this question is 4.
If propane is dichlorinated, the resulting structural/constitutional isomers are the positional ismoers having different IUPAC names.
The resulting possible isomers are:-
1-1, dichloro propane
1-2, dichloro propane
2-2, dichloro propane
1-3, dichloro propane
Thus, we have 4possible constitutional isomers of dichlorinated propane.
Structural isomers or constitutional isomers are also known as constitutional isomers as they have same molecular formula but different in their structure or have different structural formula.
Structural isomers are further divided into five types:-
Functional isomersChain isomersPositional isomersMetamerismTautomerismTo learn more about Structural isomers, refer this link.
https://brainly.com/question/3947075
#SPJ4
Which metric unit of length or distance is most comparable in scale to each of the following english system units for making measurements?
a. an inch
b. a yard
c. a mile
The metric unit of length or distance is most comparable in scale to each of the following English system units for making measurements of a yard.
What metric measurements of length or distance are used?The most widely used units of distance in the metric measurement system are millimeters, centimeters, meters, and kilometers.
The metric system is a way to measure things.
It is employed in calculations and research all around the world. Here are some instances of measurements made with the metric system;
The unit used to measure lengths and distances is the meter.
In daily life, we use this unit to measure things like the length of a piece of clothing, the distance from school to home, the weight of chocolates, etc.
Eg: 250 grams of potato chips, as an illustration. The unit of weight used here is the gram.
To learn more about metric system, refer
https://brainly.com/question/4837138
#SPJ4
Polartiy in a sentance
A tiny permanent magnet is always susceptible to demagnetization or having the polarity of the magnet reversed by lightning.
Even a permanent magnet is sensitive to induction, which can cause its polarity to change and become stronger, weaker, or even reversed.
What is polarity so crucial to life?Not just in multicellular creatures but also in individual cells and subcellular structures, polarity enables the development of functional complexity. Polar organisation enables physical relationships between areas with various functions in a way that supports function integration across the entire organism.
The polarity of water causes hydrogen bonds to form when adjacent water molecules are drawn to one another by their opposing charges. Other polar molecules and ions, such as many biomolecules including sugars, nucleic acids, and certain amino acids, are likewise drawn to or attracted by water.
learn more about polarity refer
https://brainly.com/question/8857494
#SPJ9
What is the ratio of masses of hydrogen in these compounds given a fixed mass of carbon?
a. 2.00:3.00
b. 1.00:1.75
c. 1.00:1.25
d. 2.00:2.25
The ratio of the hydrogen masses in the compounds is 2: 3(Option A).
What is the law of multiple proportions?We know that compounds are composed of atoms and that compounds are formed by the combination of atoms. According to the atomic theory, the combination of the atoms with each other to form compounds occurs in a definite ratio.
From the law of multiple proportions, if two elements combine in such a way that they could lead to the formation of more than one type of compound, the combination occurs in such a way that masses of the second element that combines with first element are in simple ratios.
We can see from the statements in the complete question that the ratio of the hydrogen masses in the compounds is 2: 3(Option A).
Learn more about multiple proportions:https://brainly.com/question/11872107
#SPJ1
A goldsmith melts 12.4 grams of gold to make a ring. The temperature of the gold rises from 26°C to 1064°C, and then the gold melts completely. If gold’s specific heat is 0.1291 joules/gram degree Celsius and its heat of fusion is 63.5 joules/gram, how much energy is gained by the gold?
The gold gains a total of
joules of energy.
When work is done and heat and light are produced, energy is the quantitative quality that is transferred to the body or to the physical system. Energy can be transformed in form but cannot be created or destroyed, according to the rule of conservation of energy.
How much energy is gained by the gold?
"2450 J"
Two heat flows are involved in this issue.
q = heat to melt the gold plus heat to get it to its melting point.
q = q₁ + q₂
q = mcT + mH
The gold is heated by heat (q1)
Putting the values in by using T = T f - T i.
Calculate T = 1064 - 26 and then subtract.
Values should be entered into the q1 formula at T=1038 °C.
Multiplying q1 = 12.4 0.1291 1038.
q₁ = 1662 J
Gold is melted by heat (q2)
Multiplying with q2 = 12.4 63.5.
q₂ = 787.4 J
requisite heat output (q)
Computing q = 1662 + 787.4 and make the addition.
q = 2450 J (to three significant digits)
To know more about Energy, click on the link below:
https://brainly.com/question/11483808
#SPJ9
Consider the process of diluting 1.6 m sulfuric acid (h2so4) solution to prepare 1.5 l of a 0.10 m h2so4 solution.
93 ml of sulphuric acid is to be added to prepare a 1.5 L solution of sulphuric acid.
The concentration of sulfuric acid is C1.
[tex]C_{1} = 1.6 \: mol/g[/tex]
The volume of the solution after dilution is V2.
[tex]V _{2} = 1.5 \: litres[/tex]
The concentration of solution after dilutions is C2.
[tex]C_{2} = 0.10 \: mol/ \: l[/tex]
Let the volume of sulfuric acid be V1.
The volume of the sulphuric acid is,
[tex]V _{1}C_{1} = C_{2}V _{2}[/tex]
[tex]V _{1} = \frac{C_{2} \times V _{2}}{C_{1} }[/tex]
[tex] = \frac{1.5 \times 0.10}{1.6} [/tex]
= 0.093 litres
The volume of the sulphuric acid is 0.093 litres.
The volume of the sulphuric acid in millilitres is,
1 L = 1000 ml
[tex]0.093 \: l = 0.093 \times 1000[/tex]
= 93 ml
The volume of sulphuric acid is 93 ml.
Therefore, for preparing a 1.5-litre solution of sulphuric acid, 93 ml of sulphuric acid is to be added.
To know more about sulphuric acid, refer to the below link:
https://brainly.com/question/17053565
#SPJ4
What do we call the one variable that we change in an experiment?
The independent variable that we change in an experiment.
The correct option C.
What is an independent variable?A variable that is independent is precisely what it seems like. It is an independent variable that has no bearing on the other factors you are trying to evaluate. For example, age may be an independent variable. Time is a popular independent variable since it is undisturbed by any dependant environmental influences.
Why is an independent variable important?You can have independent or dependent variables. Other variables have an impact on the value of independent variables, while dependent variables have an impact on the value of independent variables. A hypothesis identifies an anticipated connection between two variables.
To know more about independent variables visit:
https://brainly.com/question/1479694
#SPJ9
The complete question is -
What do you call the one variable that is changed in an experiment?
A. experimental variable
B. controlled variable
C. independent variable
D. dependent variable
Which factor(s) will affect the rate of diffusion of a gas? (select all that apply)
The factors that will affect the rate of diffusion of gas are as follows:
The membrane's thicknessThe membrane's surface areaThe diffusion coefficient of the gas in the substance of the membraneThe difference in the gas's partial pressure between the membrane's two sides.The density of the gas.What is the Rate of Diffusion?The random movement of particles during the net migration of material from a region of high concentration to a region of low concentration is known as diffusion in a gas. Every particle in a particular gas keeps striking other particles. The particles bounce off the edge of their container and each other more frequently in areas of the gas with higher particle densities than they do in areas with lower densities. The speed at which these process proceeds is referred to as the rate of diffusion. The rate of diffusion for a gas is inversely related to the square root of the gas density.To learn more about the Rate of Diffusion, refer to:
https://brainly.com/question/24746577
#SPJ4
2. Question I don’t understand on this one buttt
Answer:
1st question is B
Explanation:
metal is a good conductor of heat and electricity
What is the force used with a centrifuge to rapidly separate the precipitate from the liquid?.
A centrifuge operates on the sedimentation principle, which states that substances divide according to density under the effect of gravitational force (g-force).
Separation methods include density gradient, phase separation, isopycnic, ultrafiltration, and pelleting.
Centrifugation is a process that uses centrifugal force to separate mixtures. A centrifuge is a gadget that, often powered by an electric engine, rotates an item around a given axis, such as a rotor.
Centrifugation protocols generally specify the relative centrifugal force (rcf) and the magnitude of acceleration in g multiples (g-force).
To learn more about a centrifuge: brainly.com/question/10472461
#SPJ4
3. What factors affect solubility?
can anyone help its due today
PLEASE HELP ASAP ILL RATE U 5 STARS
According to the given statement the WHMIS symbols and safety and precautions when handling compressed gas:
Compressed gas symbols would be visible on the gas container.Make sure the storage temperature does not go above 52°C (125°F).Move cylinders using handcarts or other cylinder-moving machines.What exactly are WHMIS symbols?Consumer Goods. The Workplace Hazardous Materials Management System (WHMIS) assists in identifying the dangers of items such as chemicals and infectious agents.
Why do we use WHMIS symbols?WHMIS labels are crucial because workplaces require a defined means of identifying hazardous products. The WHMIS system allocates responsibility for classifying any potential hazards to both suppliers and employers.
Safety and precautions when handling compressed gas?Make sure the storage temperature doesn't really exceed 52°C (125°F). Compressed gas cylinders should be stored, handled, and used upright. Never roll, drag, or drop cylinders or allow them to collide. Handcarts or other cylinder-moving equipment should be used.
To know more about WHMIS symbols visit:
https://brainly.com/question/28542158
#SPJ1
describe how you know a chemical change has taken place
Explanation:
The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change
Describe how to make a sodium formate (hcoona)/formic acid (hcooh) buffer that has a ph of 4.77.
In order to prepare a formic acid buffer with a pH of 4.77, a solution with a mole fraction of 10.0 mol HCOONa to 1.0 mol HCOOH is used.
Because formic acid is a weak acid with a pH close to 4.77, try to prepare a formic acid buffer with a little bit more sodium formate than formic acid.
pKa of formic acid is -log (1.7 x 10-4) = 3.77. A formic acid buffer with the necessary pH should be created by combining 10 moles of formate anion with 1 mole of formic acid. Each of these concentrations can be used to modify buffer capacity.
pH = pKa + log [HCOOH]
4.77 = 3.77 + log [HCOOH]
1 = log [HCOOH]
HCOOH = antilog 1
HCOOH = 10
Therefore, the ratio of HCOONa to HCOOH is 10:1
Learn more about Formic acid buffer here:
https://brainly.com/question/28166033
#SPJ4
For mercury, the enthalpy of vaporization is 58. 51 kj/mol and the entropy of vaporization is 92. 92 j/k·mol. What is the normal boiling point of mercury?.
The normal boiling point of mercury is 629.68 K.
ΔHvap(Hg) = 58. 51 kJ/mol
ΔHvap(Hg) = 58510 J/mol; the enthalpy of vaporization of mercury
ΔSvap(Hg) = 92. 92 J/K·mol; the entropy of vaporization of mercury
Tvap(Hg) = ΔHvap(Hg) ÷ ΔSvap(Hg)
Tvap(Hg) = 58510 J/mol ÷ 92. 92 J/K·mol
Tvap(Hg) = 629.68 K; the boiling point of mercury
The enthalpy of vaporization is the amount of energy that must be added to a substance in liquid state to transform that substance into a gas.
The entropy of vaporization is proportional to the ratio of the degree of randomness in the vapor and liquid phases.
More about entropy: brainly.com/question/4006598
#SPJ4
What is the main limitation of flame tests
Answer:Flame tests are used to help identify substances used in murders
Explanation:
What could happen if a person conducts an investigation but doesn't follow the steps of
the scientific method?
The action of investigating something or someone; formal or systematic examination or research.
There are five main steps involved in the scientific method: stating the problem, forming the hypothesis, collecting the data by observing and experimenting, interpreting these data, and drawing conclusions.Define a Question to Investigate. As scientists conduct their research, they make observations and collect data. ...Make Predictions. Based on their research and observations, scientists will often come up with a hypothesis. ...Gather Data. ...Analyze the Data. ...Draw Conclusions.Scientific investigation is a quest to find the answer to a question using the scientific method. In turn, the scientific method is a systematic process that involves using measurable observations to formulate, test or modify a hypothesis. Finally, a hypothesis is a proposed explanation for some observed phenomenon, based on experience or research.Scientific investigation is what people like you and me use to develop better models and explanations for the world around them.
To know more about investigation visit:
https://brainly.com/question/1191670
#SPJ9
A solution is an example of a (an): a solution is an example of a (an): _______
a. element.
b. homogeneous mixture.
c. pure substance.
d. compound.
e. heterogeneous mixture.
A solution is an example of a homogenous mixture. The correct option is b.
What is homogenous mixture?A homogeneous mixture is one in which the composition is consistent throughout. Because the dissolved salt is evenly distributed throughout the salt water sample, the salt water is homogeneous.
A heterogeneous mixture is one in which the composition varies throughout the mixture. Vegetable soup is a diverse concoction.
A solution is a uniform mixture of one or more dissolved solutes in a solvent. It should be noted that the solvent is the most abundant substance.
There are numerous solutions available. A solute, for example, can be a gas, a liquid, or a solid.
Thus, the correct option is b.
For more details regarding homogenous mixture, visit:
https://brainly.com/question/24898889
#SPJ4
Give two differences between column 1 and group 1
Which of (a)-(d) is the correct iupac name of the following compound?
a) 2-hydroxybutanoic acid
b) 3-hydroxybutanoic acid
c) 2-hydroxypropanoic acid
d) 1-carboxypropan-2-ol
c) 2-hydroxypropanoic acid is the correct Iupac name compound.
What is an example of an IUPAC name?As a result, the IUPAC name is 2,5,5-trimethyl-2-hexene. In Example (2), the longest chain containing both carbon atoms of the double bond is five. There is a seven-carbon chain, but only one of the double bond carbon atoms is present. As a result, the compound's root name will be pentene. The common name is simply the name we use in everyday life, whereas the IUPAC name is the name that follows the chemistry rules for naming a compound.Typically, a molecular compound is made up of two or more nonmetal elements. By using the stem of the element name plus the suffix -ide, molecular compounds are named with the first element first and then the second element. The number of atoms in a molecule is specified using numerical prefixes.To learn more about IUPAC name refer to
https://brainly.com/question/24419453
#SPJ4
Ceramics materials such as Al2O3 typically contain anions and cations positioned to optimize electrostatic attraction and minimize repulsion. We generally expect that?
Ionic bonding is found in many ceramic structures such as NaCl, MgO, and Al2O3. Atoms have, unlike electrical charges, making them ions, which create an electrostatic attraction between atoms. This causes bonding between atoms.
The ions pack into a regular arrangement. The nature of the ceramic depends on the size of the ion charges and the size of the ions.
For example, the structure shown left is the rock salt structure, such as that for NaCl.
Covalent bonding is found in many ceramic structures such as SiC, BN, and diamond. The atoms in these ceramics are arranged so that each pair of nearest neighbor atoms forms a chemical bond by sharing a pair of electrons.
The high energy of covalent bonds makes these ceramics very stable with regard to chemical and thermal changes.
For more information on electrostatic attraction click on the link below:
https://brainly.com/question/16871517
#SPJ4
What is the charge of an atom with and equal number of protons and electrons
which of the following changes demonstrates a chemical properties?
1. substance breaks in half
2. substance combusts
3. Hammer bounces off substance
4. substance floats in water
Answer:
option 2( substance combusts)
Explanation:
mark me as brainliest
When two amino acid monomers are positioned so that the carboxyl group of one is adjacent to the amino group of the other, they can be joined through a reaction. True or false?.
When two amino acid monomers are positioned so that the carboxyl group of one is adjacent to the amino group of the other, they can be joined through a reaction.
It is True.
What is amino acid?
Amino acid molecules make up proteins. Proteins and amino acids are essential to life. After proteins have been digested or broken down, amino acids are still present. To maintain the body, the human body makes proteins from amino acids: Prepare food.
Taking a supplement containing essential amino acids is wonderful because you can do so anytime you choose. While some athletes prefer to take it with meals or a protein shake, others prefer to take it on an empty stomach in between meals.
To learn more about amino acid from the given link:
brainly.com/question/14583479
#SPJ4
How much mno2 should be added to excess hcl to obtain 275 ml of chlorine gas at 5.0c and 650 mmhg?
The amount of manganese oxide that should be added is 0.869 moles.
The balanced equation of the reaction is,
[tex]MnO _{2} (s) + 4HCl → MnCl _{2}(aq) + 2 H _{2} O + Cl _{2}(g)[/tex]
The volume of hydrochloric acid that has to be obtained is V.
V = 275 ml
The temperature is T.
T = 5° C = (273+ 5) K = 278 K
The pressure is P.
P = 650 mm of Hg = 0.85 atm
The gas constant is R.
R = 0.0821 L atm/ K mol
The number of moles of chlorine gas that will be produced is,
PV = nRT
[tex] n = \frac{ PV}{ RT }[/tex]
[tex] n = \frac{0.85 \times 0.275}{0.0821 \times 278} [/tex]
n = 0.01 moles
The 0.01 moles of chlorine gas will be produced.
The amount of manganese oxide that should be added to hydrochloric acid to produce 275 ml of fluorine gas is,
[tex]0.01 \: mol \: of \: Cl× \frac{ 1 mmol \: of \: MnO }{mol \: of \: Cl } = 0.01 \: moles \: of \: MnO _{2} \: needed.
[/tex]
[tex]0.01 \: mol \: of \: MnO _{2} = \frac{86.9}{ mol \: of \: MnO _{ 2}}=0.869 \: moles
[/tex]
Therefore, the amount of manganese oxide that should be added to hydrochloric acid to produce 275 ml of fluorine gas is 0.869 moles.
To know more about chlorine, refer to the below link:
https://brainly.com/question/11893062
#SPJ4
How does brown bear interact with geosphere
Answer: The brown bear spreads berry and plant seeds in its scat.
Explanation:
Something done to test a hypothesis that produces new observations is called a(n)?observation measurement theory natural law experiment
Something done to test a hypothesis that produces new observations is called an experiment.
If you want to test a hypothesis, you need to do an experiment. This is where you take your idea and test it out in the real world. By doing this, you can see what happens and gather new observations.
Experiments are a key part of the scientific process. They help us to understand how the world works and can prove or disprove hypotheses. Without experiments, we would be stuck in our own heads, never knowing for sure if our ideas were correct.
So, if you have a hypothesis that you want to test, get out there and do an experiment! See what happens and learn something new.
Learn more on experiment here:
https://brainly.com/question/17274244
#SPJ4
hii please help i will give brainliest to whoever is correct :)
Answer:
Element: found on periodic table....
Polymer: multiple monomers....
Monomer: one-SINGLE...
