CHEMISTRY HIGH SCHOOL

A student is trying to classify an unidentified, solid gray material as a metal or a non metal. which question will best help the student classify the material?F. Is the material malleable or ductile?
G. Does the material feel hard to the touch?
H. Will the material float in water?
J. Does the material feel rough or smooth?

Answers

Answer 1
Answer:

Answer:

i think the answer is f as metals are malleable and ductile
Answer 2
Answer:

Answer:

F

Explanation: Most metals carry the trait that they are malleable and ductile.

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a man bought two watches for Rs 2500 each.He sold one of them at 10% . profit and the other at 4% loss.what was his gain or loss percent on the whol​

Answers

Answer:

Selling price of watch A and watch B= Rs. 425

Let cost price of watch A=x

Profit =10%

∴

100

110

x=425

x=386.36

Let cost price of watch B=y

Loss =10%

∴

100

90

y=425

y=472.22

Net cost price =x+y=858.5858

Net selling price =850

Loss%=

858.58

858.5858−850

×100=1%

Explanation:

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The atomic masses in the Periodic Table are not integral numbers. For example, carbon is listed as 12.011 amu instead of 12.000 amu. Why?

Answers

The reason that the atomic masses shown on the periodic table include fractions, is to account for the other isotopes of the element, not just the pure element. Remember, an isotope is a atom of an element with a reduced or increased number of neutrons. This changes the atomic mass but not the charge. The number is calculated by multiplying the atomic mass of each isotope of the element with its percent abundance found in nature. Therefore it is an averaged atomic mass for all of the element. For example, carbon-12 may (I don't know the real numbers) have a % abundance of 98.5%, and carbon-14 may have a percent abundance of 1.5%, so that is why carbon would have an atomic mass greater than 12.000.

Which of the following events on the sun affects the Earth in either a direct or indirect way?A. Corona mass ejection or CMEs only
B. Solar flares only
C. Solar systems only
D. All of the above

Answers

Answer:

Explanation:

D

What are the thin fibers of the human nervous system that send messages between different parts of the body?A.
nerves





B.
brain





C.
spinal cord





D.
eye

Answers

Answer:

The correct answer is option A, that is, nerves.

Explanation:

The nerves are also known as neurons that make up the nervous system. The nerves are considered as the unique cells, which conduct messages from one section of the body to another, as minute electrical signals. These messages are also called nerve impulses. There are three distinct kinds of neurons known, and each one exhibit a somewhat different function. These are relay neurons, sensory neurons, and motor neurons.
A. Nerves, it's literally the only one that makes sense

What is the measurement from the line of origin to the crest? A. Trough
B. Amplitude
C. Crest
D. Wavelength

Answers

Im 90% sure its B amplitude

Consider the following equation: 0.0136 g + 2.70 × 10-4 g - 4.21 × 10-3 g = ? How many digits to the right of the decimal point should be used to report the result?

Answers

Answer:

It should be used 2 digits to the right of the decimal point to report the result

Explanation:

When adding or subtracting two decimal numbers, the number of digits to the right of the decimal point in the result is equal to the amount with the least number of decimal places.

In this case we have 4 decimal places in 0.0136 g, 2 decimal places in 2.70 × 10-4 g and 2 decimal places in 4.21 × 10-3 g, so, the least number of decimal places is 2 and that should be the number of digits to the right of the decimal point in the result.

Then the result of the sum should be 9.66 × 10-3 g

I got 2.......................
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