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3 years ago

How many protons does an iron atom have

Chemistry

2 answers:

Tanya [424]3 years ago

5 0

Iron (Fe) has 26 protons.

AnnZ [28]3 years ago

5 0

Answer: I believe that carbon atoms have six protons

Explanation: The number of protons is called the atomic number, and it is usually different with every element

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How do you solve a b and c I'm stuck help

Sergio039 [100]

Me no see nothing dudeeeeeeee

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3 years ago

1. A student determines the density of water to be 0.966g/ml at a

lions [1.4K]

Answer:

The percentage error in the measurement is 2.4% 

Explanation:

The measurement made by the student is $0.966 g/cm^3$ .

But the actual value of density is $0.943 g/cm^3$

The formula to calculate percentage error is

percentage error = $\frac{(measured \ value-actual \ value)}{(actual \ value)} \times 100$

Hence percentage error in this case is given by

Percentage error = $\frac{(0.966-0.943)}{0.943} \times 100$

= $\frac{0.023}{0.943} \times 100=2.4%$

A physical quantities value will be determines by various quantities. If errors are made in measuring any of these quantities there will be error in the measurement of the final physical quantity as well.

Here density of a substance is a derived quantity determined by measuring mass and volume of that substance. If errors are made in mass and volume measurements the density value will also be erroneous.

4 0

3 years ago

In which of the following substances does a beam of light travel the fastest?

MAVERICK [17]

Answer:

Explanation:

4 0

3 years ago

U test a substance using red litmus paper turns blue based on these results is the substance acidic or base

Blizzard [7]

Answer:

basic in nature

Explanation:

Litmus Test -

It is the very basic test , used to determine if the solution is acidic in nature or is basic in nature .

There are two type of litmus paper available , i.e. , blue and red .

If the solution is acidic in nature ,

putting a blue litmus paper turns red ,

and putting a red litmus paper would not show any change .

And , hence it can be concluded that the solution is acidic in nature .

Similarly ,

If the solution is basic in nature ,

putting a red litmus paper turn blue ,

and putting a blue litmus paper would not show any change .

And , hence it can be concluded that the solution is basic in nature .

6 0

3 years ago

Density=6 g/ml Volume= 42ml

tino4ka555 [31]

Answer: 7 g

Explanation: 42/6=7

7 0

3 years ago