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Salsk061 [2.6K]
3 years ago
13

Is the following statement true or false solar panels collect energy from the sun and power a lamp and home Is the following sta

tement true or false solar panels collect energy from the sun can power a lamp in a home
Chemistry
2 answers:
Katen [24]3 years ago
8 0

The following statement is True.

Allisa [31]3 years ago
8 0

Question

<em>Is the following statement true or false solar panels collect energy from the sun and power a lamp and home Is the following statement true or false? Solar panels collect energy from the sun can power a lamp in a home.</em>

Answer:

<em>The following statement is </em><u><em>True</em></u><u>.</u>

Hope this helps!


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True or False: All material has the same density.
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Answer:

Different materials have different densities. So it is False

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Which model of an atom was molded after the solar system.
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If a substance is soluble in water, it will _______in water. A. settle B. float C. dissolve D. all of these
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C.Dissolve because its another word for soluble

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The concentration of gallium in silicon is 5.0 × 10−7 at%. What is the concentration in kilograms of gallium per cubic meter?
Step2247 [10]

Answer:

[ Ga ] = 1.163 E-8 Kg/m³

Explanation:

  • %wt = [(mass Ga)/(mass Si)]*100 = 5.0 E-7 %

⇒ 5.0 E-9 = m Ga/m Si

assuming: m Si = 100 g = 0.1 Kg

⇒ m Ga = (5.0 E-9)*(0.1 Kg) = 5 E-10 Kg

∴ density (δ) Si = 2.33 Kg/m³

⇒ Volume Si = (0.1 Kg)*(m³/2.33 Kg) = 0.043 m³

⇒ [ Ga ] = (5 E-10 Kg)/(0.043 m³) = 1.163 E-8 Kg/m³

⇒ [ Ga ] =

3 0
3 years ago
Which has more mass, a mole of water (h2o) or a mole of glucose (c6h12o6)?
Semenov [28]
It is important to note that mass and mole pertain to different units of measurement, thus, 1 mole of one substance may have a lower or higher mass compared to a different substance. The mass of an object gives a measure of the number of atoms present in the substance while the number of moles of a substance refers to the amount of a chemical substance it has and is often used for chemical reactions. 

For this problem, we first get the molar mass of each substance:

Molar mass of H2O = 18.0153 g/mol
Molar mass of C6H12O6 = 180.1559 g/mol

We then convert each substance into units of mass (grams), where:

1 mol H20 x 18.0153 g/mol = 18.0153 g H20
1 mol C6H12O6 x 180.1559 g/mol = 180.1559 g C6H12O6

It was then determined that 1 mole of glucose has more mass than 1 mole of water. 
3 0
3 years ago
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