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forsale [732]
3 years ago
15

The number of protons present in ATOM 1 is______

Chemistry
2 answers:
Ira Lisetskai [31]3 years ago
7 0
Three protons and three electrons. The protons are the plus signs because protons are positively charged, and the electrons are the minus signs because electrons are negatively charged. Also, the neutrons are the circles. Neutrons are negatively charged
I am Lyosha [343]3 years ago
4 0

Answer: There are three protons and three electrons in atom 1.

Explanation: An atom is made up of three particles: protons, electrons and neutrons. Protons and neutrons are found in the central located nucleus of an atom while electrons are found outside the nucleus where they revolve round the nucleus. Protons are positively charged, electrons are negatively charged while neutrons have no charge.

From the diagram above, there are three positive charges in the center, and these positive charges are protons while there are three negative charges outside the center, and these negative charges are electrons. Therefore, there are three electrons and three protons in the atom.

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A gas in a balloon at constant pressure has a volume of 185 mL at -125*C. What is its volume at 31.0*C? Show all work including
hichkok12 [17]

Answer:

                    V₂ =  379.80 mL

Explanation:

                    According to <em>Charles' Law,</em> "<em>At constant pressure the volume of given amount of gas is directly proportional to the absolute temperature"</em>. Mathematically it is given as,

                                              V₁ / T₁  =  V₂ / T₂   -----  (1)

Data Given:

                   V₁  =  185 mL

                   T₁  =  -125 °C = 148.15 K    ∴ K = °C + 273.15

                   V₂  =  ?

                   T₂  = 31.0 °C = 304.15 K

Solving eq. 1 for V₂,

                                 V₂  =  V₁ × T₂ / T₁

Putting values,

                                 V₂  =  185 mL × 304.15 K / 148.15 K

                                V₂ =  379.80 mL

Hence, with increase in temperature the volume has also increased.

8 0
3 years ago
A sample of br2(g) takes 48.0 min to effuse through a membrane. how long would it take the same number of moles of ar(g) to effu
Svet_ta [14]
From the periodic table:
mass of Br = 79.9 grams
mass of Ar = 39.9 grams
Therefore,
molar mass of Ar = 39.9 grams
molar mass of Br2 = 2(79.9) = 159.8 grams

Now,
time for Ar / time for Br2 = sqrt(molar mass of Ar / molar mass of Br2)
time for Ar = 48 * sqrt(39.9 / 158.9)
time for Ar = 24.0528 minutes
5 0
3 years ago
Give the formula of the conjugate base of HSO4–
mr Goodwill [35]
The answer is So^2-4
7 0
3 years ago
How many atoms are equal to 1.5 moles of hellium
ANTONII [103]

Answer:

There are 1.8×1024 atoms in 1.5 mol HCl

Explanation:

6 0
3 years ago
Read 2 more answers
Looking at the Periodic Table, how can you determine if an element is a metal, metalloid or nonmetal?
Digiron [165]

Answer:

It depends on where it's located on the periodic table.

Explanation:

Metals are on left side of the periodic table except Hydrogen (H), which is a nonmetal, then there's the staircase, which has the metalloids, and on the right of the staircase are the nonmetals.

6 0
3 years ago
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