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Anit [1.1K]
3 years ago
15

WHAT IS THE BORON ATOM?

Chemistry
2 answers:
AlexFokin [52]3 years ago
8 0
Boron is a chemical element with the symbol B and atomic number 5. ... Several allotropes of boron exist: amorphous boron is a brown powder; crystalline boron is silvery to black, extremely hard (about 9.5 on the Mohs scale), and a poor electrical conductor at room temperature.
leonid [27]3 years ago
3 0

Answer: Boron is a chemical element with the symbol B and atomic number 5.

Explanation: Hope this helps :) PLz mark me!!!

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Can a hype Glow in the dark ?
BlackZzzverrR [31]
I’ve only had one and it didn’t flow so ion think so
6 0
2 years ago
How many centimeters are in .479 kilometers
trapecia [35]

Answer:

47900 cm

General Formulas and Concepts:

<u>Chemistry</u>

  • Base 10 Decimal System
  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

0.479 km

<u>Step 2: Identify Conversions</u>

1 km = 1000 m

1 m = 100 cm

<u>Step 3: Convert</u>

<u />0.479 \ km(\frac{1000 \ m}{1 \ km} )(\frac{100 \ cm}{1 \ m} ) = 47900. cm

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules.</em>

47900. cm ≈ 47900 cm

7 0
3 years ago
A block of pine wood has a mass of 120 g and a volume of 300 cm3. What is the density of wood? (Show your work)
Zielflug [23.3K]

Answer:

The answer is

<h2>0.4 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass of wood = 120 g

volume = 300 cm³

So the density of the wood is

density =  \frac{120}{300}  \\  =  \frac{12}{30}  =  \frac{2}{5}

We have the final answer as

<h3>0.4 g/cm³</h3>

Hope this helps you

5 0
3 years ago
I NEED HELP ASAP!!<br> I DOMT KNOW HOW TO DO THIS
KatRina [158]
What part of it are you confused about
3 0
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How many atoms are in 9.95 moles of iron?
zvonat [6]

Answer:

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1.19 moles are found in 7.20 x 10^23 atoms of platinum

6 0
3 years ago
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