Answers
Answer:
The correct answer is solid.
Explanation:
Based on the given information, it is evident that at 1 atm pressure and 49.9 degrees C the melting of the sample takes place, that is, the unknown sample transforms into the liquid at the mentioned temperature. It can also be said that below 49.9 degrees C, the sample stays at solid-state. From all this, we can also state that at temperature 49.9 degrees C, both the liquid and the solid-state of the sample stays at equilibrium.
As one goes higher, that is, above 49.9 degrees C and up to 209.5 degrees C, the sample remains at liquid state. However, the boiling point of the sample is 209.5 degrees C, which shows that the sample becomes gas above 209.5 degrees C. Thus, the sample remains at solid-state below 49.9 degrees C, at liquid state between 49.9 degrees C to 209.5 degrees C, and a gaseous state above 209.5 degrees C. Hence, if the temperature is 0 degrees C, then solid will be the state of matter for the sample.
Related Questions
Which of the following should be measured with a meter stick, not a tape measure?A. the length of ribbon needed to tie around a vaseB. the size of a student's waistC. the distance from the ground to the top of a rampD. the circumference of an orange
2. Which test for iron(II) ions is conclusive
What experimental evidence led Rutherford to conclude that an atom is mostly space?
Calculate the molarity of each solution.a. 0.38 mol of lino3 in 6.14 l of solutionb. 72.8 g c2h6o in 2.34 l of solutionc. 12.87 mg ki in 112.4 ml of solution
Answers
hydrogen ions+hydroxide=water
which can be verified by dark reaction of photosynthesis
Answer:
water and salt
Explanation:
In the FLVS salt will be your answer but technaically when a acid reacts with a base it can create salt and water
Answers
Answer:
The molarity of I₃⁻ (aq) solution: M₂ = 0.186 M
Explanation:
Given net ionic equation:
2S₂O₃²⁻ (aq) + I₃⁻ ( aq ) ⟶ S₄O₆²⁻ (aq) + 3I⁻ (aq)
Number of moles of S₂O₃²⁻: n₁ = 2, Number of moles of I₃⁻: n₂ = 1
Given- For S₂O₃²⁻ solution: Molarity: M₁ = 0.380 M, Volume: V₁ = 29.4 mL;
For I₃⁻ (aq) solution: Molarity: M₂ = ? M, Volume: V₂ = 30.0 mL
To calculate the molarity of I₃⁻ (aq) solution, we use the equation:
Therefore, the molarity of I₃⁻ (aq) solution: M₂ = 0.186 M
Answers
Sugar, flour, and eggs cannot be separated. The materials' properties have changed, resulting in a chemical change.Therefore, crumbling a cookie is not a physical change.
What is physical change ?
Physical changes affect a chemical substance's form but not its chemical composition. Physical changes can be used to separate mixtures into their component compounds, but not to separate compounds into chemical elements or simpler compounds.
A chemical change is the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances. It occurs when one substance reacts with another to form a new substance.
A physical change is characterized by a change in physical properties. Melting, transition to a gas, change in strength, change in durability, changes in crystal form, textural change, shape, size, colour, volume, and density are all examples of physical properties.
Thus, crumbling a cookie is not a physical change.
To learn more about physical change, follow the link;
#SPJ2
Answer:
Because the sugar flour and eggs can no longer be separated. The properties of the materials have changed so it's a chemical change
hydrogen - H2
helium - He
Answers
Answer:
water
Explanation:
the other options are elements while water is 2 elements
B. magnetism
C. electromagnetic force
D. gravity
Answers
Answer:
✨Gravity✨ hope this helps
Explanation:
b} The exact time when an individual atom will decay can be accurately predicted.
c} After each half-life, the amount of radioactive material is reduced by half.
d) All radioactive isotopes have the same half-life.
e} The decay of individual atoms in a sample of radioactive material is random.
Answers
Answer: b} The exact time when an individual atom will decay can be accurately predicted.
c} After each half-life, the amount of radioactive material is reduced by half.
Explanation:
All radioactive decay follows first order kinetics.
Rate law expression for first order kinetics is given by:
where,
k = rate constant
t = time taken for decay process
a = initial amount of the reactant
a - x = amount left after decay process
Expression for calculating half life, which is the time taken by the half of the reactants to decompose is:
Answer:
For plato, the answer is C: after each half tile, the amount of radioactive material is reduced by half