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mafiozo [28]
3 years ago
6

The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.

Chemistry
2 answers:
a_sh-v [17]3 years ago
7 0
Four atoms of oxygen
erma4kov [3.2K]3 years ago
5 0

Answer:

four atoms of oxygen

Explanation:

two atoms of hydrogen

one sulphur atom

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How much heat is required to raise the temperature of 1,500 g of water from 25°C to 52°C? The specific heat of water is 4.184 J/
seropon [69]
  • Mass=1500g=m
  • ∆T=52-25=27°C
  • Specific heat capacity=c=4.184J/g°C

Apply thermodynamics

\\ \rm\rightarrowtail Q=mc\delta T

  • Q is heat

\\ \rm\rightarrowtail Q=1500(4.184)(27)

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Which element is classified as an alkali metal?
dusya [7]

Explanation:

All the elements of group 1 in the periodic table are known as alkali metals. These are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (fr).

Characteristics of alkali metals are as follows.

  • Alkali metals are soft and can be cut with a knife.
  • They are good conductors of heat and electricity.
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3 years ago
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if a gas sample has a pressure of 761 mmhg at 0.00°c by how much does the temperature have to decrease to lower the pressure to
Nady [450]
<h3>Answer:</h3>

272.43 K or -0.718°C

<h3>Explanation:</h3>

We are given;

The initial pressure,P1 as 761 mmHg

Initial temperature, T1 as 0.00°C which is equivalent to 273.15 K

Final pressure as 759 mmHg

We are required to calculate the final temperature;

According to pressure law, the pressure of a gas and absolute temperature are directly proportional at constant volume.

That is; Pα T

Therefore, at varying pressure and temperature,

\frac{P1}{T1}=\frac{P2}{T2}

To get final temperature;

T2=\frac{P2T1}{P1}

T2=\frac{(759 mmHg)(273.15K)}{761 mmHg}

T2=272.43K

Therefore, the final temperature will be 272.43 K or -0.718°C

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What is the melting point of gallium?
Alenkinab [10]
The melting point of gallium is 85.59°F (29.77°C).
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