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3 years ago

12

Plan an investigation to explore the relationship between properties of substances and the electrical forces within those substa

nces.
please help me start the steps i’m a bit confused

1 answer:

Anna71 [15]3 years ago

4 0

Answer: Plan an investigation to explore the relationship between the properties of substances and the electrical forces within those substances

Explanation:

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What are three ways that we can identify when a chemical reaction is occurring?

Nina [5.8K]

Three ways (out of the many) are:

Change of temperature
Color change
Formation of gas

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6 0

3 years ago

Question 6 The mineral barite, (BaSO.) has a ke of 1.1 x 10" at 25°C. Calculate the solubility of barium sulfate in water, in: 6

Sav [38]

Explanation:

(6.1). The reaction equation will be as follows.

$BaSO_{4}(s) \rightleftharpoons Ba^{2+}(aq) + SO^{2-}_{4}(aq)$

Assuming the value of $K_{sp}$ as $1.1 \times 10^{-10}$ and let the solubility of each specie involved in this reaction is "s". The expression for $K_{sp}$ will be as follows.

$K_{sp} = [Ba^{2+}][SO^{-}_{2}]$ (Solids are nor considered)

= $s \times s$

s = $\sqrt{K_{sp}}$

= $\sqrt{1.1 \times 10^{-10}}$

= $1.05 \times 10^{-5}$

Therefore, solubility of barium sulfate in water is $1.05 \times 10^{-5}$ .

(6.2). As the molar mass of $BaSO_{4}$ is 233.38 g/mol

Therefore, the solubility is g/L will be calculated as follows.

$233.38 g/mol \times 1.05 \times 10^{-5}$

= $2.45 \times 10^{-3} g/L$

Therefore, solubility of barium sulfate in grams per liter is $2.45 \times 10^{-3} g/L$ .

8 0

3 years ago

The rate of reaction is fastest at the _______ of a chemical reaction

astraxan [27]

Answer:

Beginning or Start

Explanation:

Reactions can be followed by measuring changes in concentration, mass and volume of reactants or products. The rate is highest at the start of the reaction because the concentration of reactants is highest at this point.

Hope this helped! :^)

5 0

3 years ago

Which cell organelle most directly affects the rate of active transport? why?

Natalka [10]

The "mitochondria" produces ATP which is essential for active transport so it determines the rate of active transport
hope that helps

6 0

3 years ago

Mila [183]

Answer:

0.47m²

Explanation:

Given parameters:

Length = 9.025 x 10⁶m

Width = 5.215 x 10⁻⁸m

Unknown:

Area of the rectangle = ?

Solution:

Area is the derived from the product of the length and width of a body.

Area = length x width = 9.025 x 10⁶m x 5.215 x 10⁻⁸m

Area = 0.47m²

6 0

3 years ago