Which substance will require more energy to heat if all the samples have the same mass and same temperature change?

Answers

Answer 1

Answer: If mass and the temperature change is not a factor then we can take a look at the chemical bonds in the substance. Chemical bonds can also dictate how hard a sample can be heated or to break the bonds in it.Two of the strongest bonds are the ionic and covalent bond. The strongest of the two is the ionic.

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Estion 2Where are the non-metals on the periodic table?

True or false. The synthesis of giant molecules from components of repeating units is polymerization.

Answers

True due to the fact that polymers are a giant chain of monomers

PLEASE ANSWER AS QUICKLY AS POSSIBLE THANK YOU SO MUCHEli uses this thermometer to measure the temperature of a liquid. He reports his
results as 36 degrees. Is this a good description?

A. This is a perfect description because it gives both a number and a unit

B. This description is clear and can be understood by other measures

C. This description needs a unit describing the system of measurement.

D. This description needs a decimal point to be a good description

Answers

Answer:

This description needs a unit describing the system of measurement.

A rock is dropped into a graduated cylinder containing 40mL of water. the new volume is 47mL. What is the volume of the rock? a)4ml b)47ml c)7ml d)87ml e)11mlI thibk it is 7ml am I correct ?

Answers

The volume of the rock is 7mL. The correct option is c)7ml

From the question,

We are to determine the volume of the rock.

When an object is submerged in a container containing a liquid, the submerged object displaces a volume of liquid equal to the volume of the object.

That is,

Volume of object = Final volume - Initial volume

From the given information,

Initial volume = 40mL

Final volume = 47mL

∴ Volume of the rock = 47mL - 40mL

Volume of the rock = 7mL

Hence, the volume of the rock is 7mL. The correct option is c)7ml

Learn more here: brainly.com/question/10136572

To find the volume of irregularly shaped objects, you put them in graduated cylinders, as described. To find the volume of the object, get the difference between the original volume and the new volume.
So, its 47mL - 40mL, which equals 7, so choice c) 7mL, the answer you picked!

Cobalt (Co) has an atomic mass of 59 and an atomic number of 27. Which statement correctly describes an atom of cobalt?A. An atom of cobalt contains more neutrons than protons.
B. An atom of cobalt contains more electrons than protons.
C. An atom of cobalt contains the same number of neutrons and protons.
D. An atom of cobalt contains the same number of neutrons, electrons and protons.

Answers

Answer:

Explanation:

27 us the number of protons when we subtract 27 from 59 it will be 32 because a mass number is the sum of proton and neutron but tell u more on the comment

Answer: A - An atom of cobalt contains more neutrons than protons.

Explanation: The atomic number is the number of protons in an atom. The atomic mass is the sum of protons & neutrons in an atom. So, with simple math we can figure out the number of neutrons. Total 59 - 27 protons = 32 neutrons. Which means that A is the only right answer in this case.

Little Extra: A & B would both be correct if Cobalt was a negatively charged ion. An atom is an ion if it is charged, and an ion is either negatively charged or positively charged. For example, if Cobalt had 27 protons & 26 electrons it's overall charge would be positive since it has more protons than electrons. And it would be negatively charged if Cobalt had 27 protons & 28 electrons. No charge if there are 27 protons & 27 electrons because proton +1 and electron -1. Imagine 27-27=0 no charge, 27-26= +1 charge, 27-28= -1 charge

I hope this made you smarter.

Which compound when stirred in water will not pass through filter paper?

Answers

In regards to this question, there are no options given to choose from and this makes the question difficult to answer. I hope the answer i am giving is the one you were looking for. The compound Mg(OH)2 when stirred in water will not pass through a filter paper as it is bound to form a sediment. This sediment will get stuck in the filter paper.

The molar heat of vaporization of water is 40.7kJ/mol. How much heat must be absorbed to convert 50.0 grams of liquid water at 100oC to steam at 100oC?A) 1.46 X 10 kJ
B) 1.13 X 102kJ
C) 2.04 X 103kJ
D) 3.66 X 104kJ

Answers

During a phase change the temperature does not change since all of the heat is being absorbed in order to break the intermolecular forces. Due to that, the formula will not need to have T in it and is actually q=nΔH(v).
n=the number of moles (in this case 2.778mol of water since you divide 50g by 18g/mol).
ΔH(v)=the molar heat of vaporization (in this case 40.7kJ/mol).
q=the heat that must be absorbed
q=2.778mol×40.7kJ/mol
q=113.1kJ
Therefore the water needs to absorb 1.13×10²kJ.

I hope this helps. Let me know if anything is unclear.

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