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Goryan [66]
3 years ago
14

What causes the phases of the moon?

Chemistry
1 answer:
Allisa [31]3 years ago
4 0

Answer:

as the moon moves around earth, different portions are illuminated

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The compound XCl4 contains 75.0% Cl by mass. What is the<br> element X?<br> nch of the following
krok68 [10]

The element X is titanium.

According to the question, the percentage by mass of Cl in XCl4  is 75.0%.

The percentage by mass is obtained from;

Mass of element in the compound/molar mass of compound * 100

Hence;

Let the mass of the unknown element be X

75 = 142/X + 142 * 100

75 (X + 142) = 142 * 100

75X + 10650 = 14200

75X =  14200 - 10650

X = 14200 - 10650/75

X = 47

Hence, X is titanium.

Learn more; brainly.com/question/1363167

7 0
3 years ago
Consider reaction AgCIO3(aq)+Mgl2(aq)
mash [69]

Answer:

the product is Mg(Clo3)2 + AgI

6 0
3 years ago
H2 H2O H2O2 CH4 All four examples represent
miv72 [106K]
It is covalent  bonds
8 0
3 years ago
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0. 34 ll of hno3hno3 is titrated to equivalence using 0. 14 ll of 0. 1 mnaohmnaoh. what is the concentration of the hno3hno3 ?
Sphinxa [80]

When 0.34 of HNO₃ is titrated to equivalence using 0.14 l of 0.1 m NaOH then the concentration of HNO₃ is 0.041 M

The reaction of neutralization of HNO₃ with NaOH is

HNO₃ + NaOH → H₂O + NaNo₃

When 1 mole of HNO₃ react with 1 mole of NaOH, based on chemical rection the moles of NaOH at equivalence point are equal to moles of HNO₃ present in solution: -

With the mole and volumes, we can find molarity as follows:

            Moles of NaOH = moles HNO₃

            ⁼ 0.14 L X (0.1 mol NaOH/L) = 0.014 mole NaOH

            =0.014 mol HNO₃

Molarity: -

              \frac{(Mole of HNO₃)}{(volume of HNO₃)}=  \frac{0.014}{0.34}

               = 0.041 M

Thus, from above solution we concluded that the concentration of HNO₃ solution is 0.041 M.

Learn more about molarity: brainly.com/question/8732513

#SPJ4

6 0
2 years ago
What could reduce the heat island effect around cities?
melamori03 [73]

Answer: (D.) Planting Roof gardens

Explanation: I'm really hoping you get this right but the reason of my answer is because Trees, green roofs, and vegetation can help reduce urban heat island effects by shading building surfaces, deflecting radiation from the sun, and releasing moisture into the atmosphere.

5 0
3 years ago
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