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riadik2000 [5.3K]
3 years ago
9

In the formula XS04, the symbol X could represent the element*

Chemistry
1 answer:
Bumek [7]3 years ago
8 0
4) Mg, sulfato de magnesio
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Scientific Notation and Significant Figures Problem:
solong [7]

Answer:

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3 years ago
1) A box has a mass of 8 kg and a volume of 2 m? What is its density? |
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\huge\boxed{4\ \text{kg/m$^3$}}

We know that \rho=m\div V, where \rho is density, m is mass, and V is volume.

Substitute in the values we know and solve:

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3 years ago
At 40.0°C, the pressure inside a nitrogen−filled tennis ball with a volume of 148 cm3 is 235 kPa. How many moles of nitrogen (N2
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To determine the number of moles of a gas, we need to have an expression that relates the pressure, temperature and volume of the system. For simplification, we assume that this gas is ideal so we use the equation PV=nRT. We calculate as follows:

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4 years ago
what is the total number of electrons in the second principal energy level of a sodium atom in the ground state?
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Lime juice turns limus paper red indicating that lime juice is?
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