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bulgar [2K]
3 years ago
6

How many carbon (C) atoms are in CaCO3?​

Chemistry
2 answers:
leonid [27]3 years ago
7 0

Answer:one atom

Explanation:

The carbon symbol is C so only one

Calcium has 1 atom

Oxygen has 3 atoms

grandymaker [24]3 years ago
5 0

Answer:

Only one Carbon atom

Explanation:

CaCO3 is composed of one atom of Calcium, one atom of Carbon and three atoms of oxygen

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1) 2C2H6 + 7O2 --> 4CO2 + 6H2O
Lena [83]

Answer:

a).

2 \: moles \: of \: ethane \: react \: with \: 7 \: moles \: of \: oxygen \\ 24 \: moles \: react \: with \: ( \frac{24 \times 7}{2} ) \: moles \\  = 84 \: moles

b).

2 \: moles \: react \: with \: 7 \: moles \\ ( \frac{12 \times 2}{7} ) \: moles \: react \: with \: 12 \: moles \\  = 3 .43 \: moles \\ 1 \: mole \: weighs \: 30 \: g \\ 3.43 \: moles \: weigh \: (3.43 \times 30) \\  = 102.9 \: g

c).

746.7 g

7 0
3 years ago
The atomic mass of a atom (in amu) is equal to
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1.67377x10-27 kilogram(kg) or 1.67377x 10-24 gram(g)
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3 years ago
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What is −1/4⋅(−6/11)?
Lera25 [3.4K]
The answer is 0.13636364
8 0
4 years ago
In the unit cell of galena, six square faces of equal size each form 90 degree angles with every adjacent face. What type of cry
lbvjy [14]

Answer : The correct option is, Cubic.

Explanation :

As there are seven types of crystal systems which are cubic, tetragonal, orthorhombic, monoclinic, triclinic, rhombohedral and hexagonal.

A unit cell is characterized by the axial length (a, b and c) and axial angle (\alpha ,\beta ,\gamma ) parameters which decide the size and shape of the unit cell.

In tetragonal crystal system, a=b\neq c and \alpha=\beta=\gamma=90^o

In hexagonal crystal system, a=b\neq c and \alpha=\beta=90^o,\gamma=120^o

In triclinic crystal system, a\neq b\neq c and \alpha\neq \beta\neq \gamma=90^o

In cubic crystal system, a=b=c and \alpha=\beta=\gamma=90^o

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7 0
3 years ago
If body fat has a density of .94g/mL and 4.0L of fat is removed, how many pounds of fat were removed?
Vlad1618 [11]

Answer:

8.3lb of fat were removed

Explanation:

To solve this problem we need to convert the liters of fat removed to mL. Using the mL and density we can find the grams. To convert grams to pounds we must use (1lb = 453.592g):

<em>mL fat:</em>

4.0L * (1000mL / 1L) = 4000mL

<em>g fat:</em>

4000mL * (0.94g / mL) = 3760g of fat

<em>lb fat:</em>

3760g of fat * (1lb / 453.592g) =

<h3>8.3lb of fat were removed</h3>
7 0
3 years ago
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