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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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Complete combustion of 5.90 g of a hydrocarbon produced 18.8 g of CO2 and 6.75 g of H2O.
Inessa05 [86]
First we have to find moles of C:
Molar mass of CO2:
12*1+16*2 = 44g/mol
(18.8 g CO2) / (44.00964 g CO2/mol) x (1 mol C/ 1 mol CO2) =0.427 mol C 
Molar mass of H2O:
2*1+16 = 18g/mol
As there is 2 moles of H in H2O,
So,

<span>(6.75 g H2O) / (18.01532 g H2O/mol) x (2 mol H / 1 mol H2O) = 0.74mol H </span>

<span>Divide both number of moles by the smaller number of moles: </span>
<span>As Smaaler no moles is 0.427:
So,
Dividing both number os moles by 0.427 :
(0.427 mol C) / 0.427 = 1.000 </span>
<span>(0.74 mol H) / 0.427 = 1.733 </span>

<span>To achieve integer coefficients, multiply by 2, then round to the nearest whole numbers to find the empirical formula: 
C = 1 * 2 = 2
H = 1.733 * 2 =3.466
So , the empirical formula is C2H3</span>
4 0
3 years ago
Read 2 more answers
If you have 2L of a solution with 6 moles of HCl in it, what is the molarity of it?
Vladimir [108]

Answer:

Molarity = 3 M

Explanation:

Given data:

Volume of solution = 2 L

Number of moles of HCl = 6 mol

Molarity = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

Molarity = 6 mol / 2 L

Molarity = 3 M     (M = mol/L)

7 0
3 years ago
Elemental calcium reacts with water at room temperature to form calcium hydroxide and hydrogen gas as shown in this equation. So
dem82 [27]
Reaction of Elemental Calcium with Water is as follow,

                        Ca  +  2 H₂O    →    Ca(OH)₂  +  H₂↑

When Sodium Metal is reacted with Water it produces NaOH and eliminates Hydrogen gas as shown in following equation,

                         2 Na  +  2 H₂O    →    2 NaOH  +  H₂↑

In both cases corresponding Hydroxides along with Hydrogen gas is produced.
8 0
3 years ago
Read 2 more answers
What is the correct formula for calcium sulfate dihydrate?
Murljashka [212]

Answer:

It is CaSO4.2H2O

Explanation:

<em>C</em><em>a</em><em>l</em><em>c</em><em>i</em><em>u</em><em>m</em><em> </em><em>h</em><em>a</em><em>s</em><em> </em><em>a</em><em> </em><em>v</em><em>a</em><em>l</em><em>e</em><em>n</em><em>c</em><em>e</em><em> </em><em>o</em><em>f</em><em> </em><em>2</em><em> </em><em>b</em><em>e</em><em>c</em><em>a</em><em>u</em><em>s</em><em>e</em><em> </em><em>i</em><em>t</em><em> </em><em>h</em><em>a</em><em>s</em><em> </em><em>o</em><em>n</em><em>l</em><em>y</em><em> </em><em>t</em><em>w</em><em>o</em><em> </em><em>v</em><em>a</em><em>l</em><em>e</em><em>n</em><em>c</em><em>y</em><em> </em><em>e</em><em>l</em><em>e</em><em>c</em><em>t</em><em>r</em><em>o</em><em>n</em><em>s</em><em>.</em>

<em> </em><em>S</em><em>u</em><em>l</em><em>p</em><em>h</em><em>a</em><em>t</em><em>e</em><em> </em><em>(</em><em> </em><em>S</em><em>O</em><em>4</em><em>)</em><em>^</em><em>2</em><em>-</em><em> </em><em>i</em><em>s</em><em> </em><em>a</em><em> </em><em>r</em><em>a</em><em>d</em><em>i</em><em>c</em><em>a</em><em>l</em><em> </em><em>w</em><em>i</em><em>t</em><em>h</em><em> </em><em>a</em><em> </em><em>v</em><em>a</em><em>l</em><em>e</em><em>n</em><em>c</em><em>e</em><em> </em><em>v</em><em>a</em><em>l</em><em>u</em><em>e</em><em> </em><em>o</em><em>f</em><em> </em><em>2</em><em>.</em>

<em> </em><em> </em><em>W</em><em>h</em><em>e</em><em>n</em><em> </em><em>C</em><em>a</em><em>l</em><em>c</em><em>i</em><em>u</em><em>m</em><em> </em><em>c</em><em>o</em><em>m</em><em>b</em><em>i</em><em>n</em><em>e</em><em>s</em><em> </em><em>w</em><em>i</em><em>t</em><em>h</em><em> </em><em>s</em><em>u</em><em>l</em><em>p</em><em>h</em><em>a</em><em>t</em><em>e</em><em> </em><em>i</em><em>n</em><em> </em><em>b</em><em>o</em><em>n</em><em>d</em><em>i</em><em>n</em><em>g</em><em>,</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em>F</em><em>o</em><em>r</em><em>m</em><em>u</em><em>l</em><em>a</em><em>r</em><em> </em><em>=</em><em>=</em><em>></em><em> </em> Ca<u>2</u><u>(</u>SO4)<u>2</u>

<em>B</em><em>u</em><em>t</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>2</em><em> </em><em>c</em><em>a</em><em>n</em><em>c</em><em>e</em><em>l</em><em> </em><em>out</em><em>.</em>

<em>O</em><em>v</em><em>e</em><em>r</em><em>a</em><em>l</em><em>l</em><em> </em><em>f</em><em>o</em><em>r</em><em>m</em><em>u</em><em>l</em><em>a</em><em>r</em><em>=</em><em>=</em><em>></em><em> </em>CaSO4

For hydrated, ==> CaSO4.H2O

3 0
3 years ago
The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of urani
laila [671]
238_{U}



That is a capital U with the number 238 at upper left of the letter

5 0
3 years ago
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