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maw [93]
3 years ago
5

Asteroids, comets, and meteors are generally lager than a planet True or False

Chemistry
2 answers:
OLEGan [10]3 years ago
8 0

Correction *

this is false

Tems11 [23]3 years ago
7 0

False I think but at least the asteroids on the milky way that take almost 200 years to orbit the sun are and i had to google that

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Rank the following in order of increasing (lowest to highest) reactivity:
choli [55]

Answer:

a)  Li<Na<Rb

b) P<S

c) Rn<Xe

d) Hg<W<Cs

4 0
3 years ago
The rows of the periodic table are called groups because similar elements reside next to each other on the modern periodic table
forsale [732]

Answer:

True

Explanation:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

3 0
3 years ago
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Acetone is the main chemical in nail polish and has a density of 0.7857 g/mL. What is the volume of 6.54g of acetone ?
trapecia [35]

8.3mL

Explanation:

Given parameters:

Mass of acetone = 6.54g

Density of acetone = 0.7857 g/mL

Unknown:

Volume of acetone = ?

Solution:

Density is defined as the mass per unit volume of a substance. It is expressed mathematically as shown below:

  Density = \frac{Mass}{Volume}

Since the unknown is volume, we make it the subject of the formula

Volume =  \frac{mass}{density}

Input the values;

  Volume = \frac{6.54}{0.7857} = 8.3mL

learn more:

Volume brainly.com/question/2690299

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5 0
3 years ago
iron has a density of 7.86 g cm3 could a block of metal with a mass of 18.2 and a volume of 2.56 cm^3 be iron?
satela [25.4K]

The density of the block will be "7.11 gm/cm³". A further explanation is provided below.

Given values are:

Density of iron,

  • 7.86 \ g/cm^3

Mass of block of metal,

  • 18.2 \ gm

Volume of block,

  • 2.56 \ cm^3

By using the formula,

→ Density = \frac{Mass}{Volume}

then,

→ The density of block will be:

= \frac{Mass}{Volume}

= \frac{18.2}{2.56}

= 7.11 \ gm/cm^3

Learn more:

brainly.com/question/10804879

7 0
3 years ago
Which of the following processes are physical changes?
Stolb23 [73]
C) and d) are physical changes while b) is chemical
7 0
3 years ago
Read 2 more answers
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