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2 years ago

What is used to maintain the steam temperature in pipings?

Chemistry

1 answer:

Mashutka [201]2 years ago

8 0

Answer:

carbon steel

Pipes for steam systems are commonly manufactured from carbon steel to ASME B 16.9 A106. The same material may be used for condensate lines, although copper tubing is preferred in some industries.

Explanation:

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The element copper has naturally occurring isotopes with mass numbers of 63 and 65. The relative abundance and atomic masses are

timofeeve [1]

Answer:

63.546

Explanation:

The Average atomic mass is calculated using the formula:

sum of the product of the atomic masses and their relative abundances all divided by 100 or total abundance

4 0

3 years ago

What is the balanced chemical equation for this reaction? H3PO4 + HCl → PCl5 + H2O Question 7 options: H3PO4 + 5HCl → PCl5 + H2O

WITCHER [35]

Answer:

It's the last option.

Explanation:

H3PO4 + 5HCl → PCl5 + 4H2O

4 0

2 years ago

"Using a low-flow shower head instead of a high-flow shower head saves about 3 gallons of water per minute." Who is the most rel

Ymorist [56]

C a scientist because they would be the ones who are most qualified to do the experiment and get accurate results

7 0

3 years ago

Read 2 more answers

1. Tooth enamel consists mainly of hydroxyapatite (Ca5(PO4)3(OH). When tin(II)fluoride is added to toothpaste it reacts with the

Sliva [168]

<u>Answer:</u> The mass of hydroxyapatite that can be converted is 0.733 grams

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

Given mass of tin(II)fluoride = 0.115 g

Molar mass of tin(II)fluoride = 156.7 g/mol

Putting values in equation 1, we get:

$\text{Moles of tin(II)fluoride}=\frac{0.115g}{156.7g/mol}=0.00073mol$

The chemical equation for the reaction of tin(II)fluoride and hydroxyapatite follows:

$SnF_2+2Ca_5(PO_4)_3(OH)\rightarrow 2Ca_5(PO_4)_3F+SnO+H_2O$

By Stoichiometry of the reaction:

1 mole of tin (II) fluoride reacts with 2 moles of hydroxyapatite

So, 0.00073 moles of tin (II) fluoride will react with = $\frac{2}{1}\times 0.00073=0.00146mol$ of hydroxyapatite

Now, calculating the mass of hydroxyapatite by using equation 1, we get:

Moles of hydroxyapatite = 0.00146 moles

Molar mass of hydroxyapatite = 502.3 g/mol

Putting values in equation 1, we get:

$0.00146mol=\frac{\text{Mass of hydroxyapatite}}{502.3g/mol}\\\\\text{Mass of hydroxyapatite}=(0.00146mol\times 502.3g/mol)=0.733g$

Hence, the mass of hydroxyapatite that can be converted is 0.733 grams

3 0

3 years ago

The atomic mass of an element whose atoms consist of eight protons, nine neutrons, and eight electrons is

Minchanka [31]

17, the atomic mass of an element is the mass of the protons plus the mass of the nutrons. The mass of both Nuetrons and Protons is 1 so 8+9=17

8 0

2 years ago