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nikklg [1K]
3 years ago
10

How many atm are in 1520mmHg​

Chemistry
1 answer:
stealth61 [152]3 years ago
8 0

Answer:

2

Explanation:

millimetre of mercury =1520

divide the pressure by 760 (do this always)

1520/760 = 2

Thats how you do it!

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If an individual proton has mass 1.007825 amu, and an individual neutron has mass 1.008665 amu, what's the calculated mass of a
german

Answer:

C) 237.96682 amu

Explanation:

The symbol for neptunium-236 is given as;

²³⁶₉₃Np

This element has 93 protons and (236 - 93 = 143) neutrons.

Mass Number =Total mass of Protons + Total mass of neutrons

Total Mass pf protons = 93 * 1.007825 amu, = 93.727725 amu

Total mass of Neutrons = 143 * 1.008665 amu = 144.239095 amu

Mass = 144.239095 + 93.727725  = 237.96682 amu

Correct option is option C.

7 0
3 years ago
In the double replacement reaction between na2so4 (aq) and bacl2 (aq), will a precipitate form?
bagirrra123 [75]
A precipitate will form since BaSO₄ is insoluble in water.
8 0
4 years ago
The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Tomtit [17]

The density of Ca will be between that of Mg and Sr

Explanation:

Ca, Mg and Sr are group II elements. They are called alkali earth metals. The correct order of the elements in this group are: Be, Mg, Ca, Sr, Ba and Ra.

Density is an intensive property of matter which describes the amount of matter(mass) per volume of a substance.

  • Density varies proportionally with mass. The higher the mass, the higher its density.
  • On the periodic table, atomic mass which the number of protons and neutrons in the nucleus of an atom increases down the group.
  • This implies a progradation in the value of density down the group. Therefore one expects that the value of density of Ca will fall between that of Mg and Sr. It cannot be more than 2.6g/cm³ nor less than 1.74g/cm³.

Learn more:

density brainly.com/question/2658982

mass number brainly.com/question/2597088

#learnwithBrainly

                   

6 0
3 years ago
Identify two kinds of data the student will likely collect during his experiment. Identify the type of data collected and how th
-BARSIC- [3]
Qualitative (physical e. g. colour) and quantitative (numerical e. g. 3 grams) data
6 0
3 years ago
Read 2 more answers
What is the answer for this!! plz it due today 5/6/20!!!
Furkat [3]

Answer:)

1. d

2.c

3.c

4.b

Explanation:

Because im smart

7 0
4 years ago
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