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valkas [14]
4 years ago
14

Which element is more reactive than rubidium (Rb)?

Chemistry
2 answers:
kozerog [31]4 years ago
4 0

Answer:B (Cesium)

Explanation:

Eddi Din [679]4 years ago
3 0
Rubidium is a chemical element with symbol Rb and atomic number 37. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with a standard atomic weight of 85.4678. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidationin air. On Earth, natural rubidium comprises two isotopes: 72% is the stable isotope, 85Rb; 28% is the slightly radioactive 87Rb, with a half-life of 49 billion years—more than three times longer than the estimated age of the universe.

aluminum element is more reactive than rubidium (Rb)
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Give examples to three solutions you commonly use and identify the solvent and solutes that make it each up.
8_murik_8 [283]
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8 0
3 years ago
Read 2 more answers
Why the standard enthalpy change of hydration of copper sulphate cannot be measured directly ?
Juliette [100K]

It is difficult to measure the enthalpy change of hydration accurately in a direct way because the hydration process can't be controlled directly. Instead, anhydrous and hydrated copper(II) sulfate can be dissolved in water. Each 'route' produces a solution of hydrated copper(II) sulfate.

5 0
3 years ago
If 11.00 mL of a standard 0.2831 M NaOH solution is required to neutralize 26.86 mL of H2SO4, what is the molarity of the acid s
MrRa [10]

Answer:

0.1159 M

Explanation:

Using the formula below:

CaVa = CbVb

Where;

Ca = concentration/molarity of acid (M)

Cb = concentration/molarity of base (M)

Va = Volume of acid (mL)

Vb = volume of base (mL)

According to this question, the following information were given:

Ca = ?

Cb = 0.2831 M

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Vb = 11.00 mL

Using CaVa = CbVb

Ca × 26.86 = 0.2831 × 11

26.86Ca = 3.1141

Ca = 3.1141 ÷ 26.86

Ca = 0.1159

The molarity of the acid (H2SO4) solution is 0.1159 M

3 0
3 years ago
PLEASE HELP WILL MARK YOU AS BRAINLEST
kozerog [31]
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7 0
3 years ago
Why do polar and non polar molecules have different properties?
Margaret [11]
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8 0
4 years ago
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