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Rufina [12.5K]
3 years ago
9

| What material does Not Melt At any temperature?

Chemistry
1 answer:
jenyasd209 [6]3 years ago
4 0
Is there supposed to be multiple choice answers
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An element has a metallic-gray appearance. It also has the properties of both a metal and a nonmetal. In which section of the ta
katrin2010 [14]

Answer:

you would find it in section 3 as these are semi-metals

Explanation:

3 0
3 years ago
Read 2 more answers
Which has more atoms, 6.0 g of silicon (Si:28) or 6.0 of iron (Fe:56)?
vovangra [49]

Answer:  6.0 g of silicon has more atoms

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) \text{Number of moles of silicon}=\frac{6.0g}{28g/mol}=0.21moles

1 mole of Si contains = 6.023\times 10^{23} atoms

0.21 moles of Si contains = \frac{6.023\times 10^{23}}{1}\times 0.21=1.26\times 10^{23} atoms

b) \text{Number of moles of iron}=\frac{6.0g}{56g/mol}=0.11moles

1 mole of Fe contains = 6.023\times 10^{23} atoms

0.11 moles of Fe contains = \frac{6.023\times 10^{23}}{1}\times 0.11=0.66\times 10^{23} atoms

Thus 6.0 g of silicon has more atoms

3 0
3 years ago
How many neutrons are in an atom with atomic number of 53 and mass number of 127?
asambeis [7]
Atomic number = 127 – 53=74 neutrons
8 0
3 years ago
1. What is the crime that Mr. Fraser describes ?
Lyrx [107]

Looking for evidence entails careful study. The answers to the question is below;

<h3>Evidence and Fact finding</h3>

The crime that Mr. Fraser describes is drive-by killing.

The police select their suspect by the act of showing pictures to one of the teenagers and thereafter they the suspect out, the suspect the saw that shoot the father.

The fact was that there was no evidence since they did not find the gun and the car used in the crime was not identified. Even the suspect vehicle (shooter) was not identified also.

The approximate figure is about 252 out of 367 cases of wrongful conviction have been identified. That is 69% of DNA exonerations. Others about 250-285 cases.

The National Registry of Exonerations has stated that about 450 non-DNA-based exonerations  where there was eyewitness misidentification. That is about 3 quarters have eye witness testimonies.

Reconstructive memory is simply known as the act of remembering that involves the reproduction of an experience or event that is known to be partially stored in memory before.

Fraser challenged the judge to go out and inspect the crime scene themselves.

The outcome of the challenge was that the judge thereby granted the retrial for Francisco Carrillo and thus released him so he can prepare his defense before the prosecution day.

Mr. Fraser suggested that people learn to be more effective with how they handle things or situations so as to get the right evidence and also that people be more cautious about how true some eyewitness testimonies may be.

Learn more about this case from

brainly.com/question/24612601

3 0
2 years ago
Looking at the above diagram, which side would be considered an acid AND explain how do you know this?
zvonat [6]

Answer:

The side with lots of H+ and low pH

Explanation:

Because one of the feature of an acid is the ability to dissociate to H+.

And it has lower pH because the concentration of H+ is more than OH-

3 0
3 years ago
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