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3 years ago

What is water made of

Chemistry

2 answers:

kipiarov [429]3 years ago

6 0

In terms of science 2 hydrogen molecules and 1 oxygen molecule

larisa [96]3 years ago

4 0

H2o...................

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Finally, sometimes the desired value does not directly match the units given but is derived from the calculation required. For e

maria [59]

Answer: The thickness of metal sheet is 1.93 mm

Explanation:

The metals sheet is in the form of cuboid.

To calculate the width of the metal sheet for the given volume, we use the equation to calculate the volume of cuboid, which is:

$V=lbh$

where,

V = volume of metal sheet = $45.5cm^3$

l = length of metal sheet = 15.9 cm

b = width of metal sheet = 14.8 cm

h = height of metal sheet = ? cm

Putting values in above equation, we get:

$45.5cm^3=15.9\times 14.8\times h\\\\h=\frac{45.5}{15.9\times 14.8}=0.193cm$

Converting this thickness into millimeters, we use the conversion factor:

1 cm = 10 mm

So, $0.193cm\times \frac{10mm}{1cm}=1.93mm$

Hence, the thickness of metal sheet is 1.93 mm

5 0

3 years ago

True or False. The elements that make up the reactants must be present in the products.

Afina-wow [57]

Answer:

In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products. In a chemical reaction, only the atoms present in the reactants can end up in the products.

Explanation:

8 0

2 years ago

Read 2 more answers

One way a machine can make work easier is by?

Bumek [7]

One way a machine can make work easier is by being faster and more efficient. Most machines can do human work quicker and more successfully.

6 0

4 years ago

How many moles of NH3 are produced in the reaction of 3.3 moles of N2? N2 + 3H2 = 2NH3

enot [183]

Answer:

6.6 moles of NH3

Explanation:

3.3 mol N2 * (2 mol NH3/ 1 mol N2) = 6.6 mol NH3

6 0

2 years ago

) In order to plate a steel part having a surface area of 200 in.2 with a 0.002 in.-thick layer of nickel: (a) how many atoms of

Fiesta28 [93]

Answer:

(a). 5.4 × 10^23 atoms.

(b). 0.8928 moles Ni.

Explanation:

The first thing to do is to convert surface area from the in^2 to cm^2 and also the thickness unit to cm.

Therefore, 200 in^2 = 1290.3 cm^2 and 0.002 in = 0.00508 cm.

The next thing to do is to calculate the volume by using the formula below;

Volume= A × d. Where A = area and d = thickness.

Then, volume = 1290.3 × 0.00508= 6.55 cm^3.

Although not given but the Density if Nickel = 8 g/cm^3.

We know that the formula for Calculating density = mass / volume. So, we have ; mass = density × volume.

Mass= 8 × 6.55 = 52.4 g.

(a). The number of atoms of Nickel= moles × Avogrado's number.

Numbers of moles= mass / molar mass.

==> 52.4 / 58.6934 = 0.8928 moles.

Then, the number of atoms of Nickel = 0.8928 × 6.02 × 10^23.

= 5.4 × 10^23 atoms.

(b). The number of moles of Nickel has been Calculated in (a) above to be = 0.8928 moles Ni.

5 0

4 years ago

Read 2 more answers