The product side of a chemical reaction is shown. → 7Ti2(SO4)3

Physics

2 answers:

Alex_Xolod [135]3 years ago

7 0

The answer is the fourth choice because there are 7 represents in a coefficient.

Stells [14]3 years ago

3 0

Answer:

The correct option is "7"

Explanation:

The compound [Ti₂(SO₄)₃] in the question is Titanium (III) sulphate. The coefficient of a compound is the number of molecules of that compound, hence "7" is the coefficient of the compound, Titanium (III) sulphate [Ti₂(SO₄)₃]. Thus, it can be expressed to mean seven molecules of Titanium (III) sulphate [7 moles of Ti₂(SO₄)₃] are in the product side of the chemical reaction .

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A 280-m-wide river flows due east at a uniform speed of 4.7m/s. A boat with a speed of 7.1m/s relative to the water leaves the s

tamaranim1 [39]

Answer:

(a) The speed is 7.96 m/s

(b) The direction is 76 degree from positive X axis in counter clockwise direction.

Explanation:

Width of river = 280 m

speed of river, vR = 4.7 m/s towards east

speed of boat with respect to water, v(B,R) = 7.1 m/s at 26 degree west of north

$vR = 4.7 i \\\\v(B,R) = 7.1 (- sin 26 i + cos 26 j) = - 3.1 i + 6.4 j$

(a) The velocity of boat with respect to ground is

$\overrightarrow{v}_{(B,R)}=\overrightarrow{v}_{(B,G)}-\overrightarrow{v}_{(R,G)}\\\\- 3.1 \widehat{i} +6.4 \widehat{j}=\overrightarrow{v}_{(B,G)} - 4.7 \widehat{i}\\\\\overrightarrow{v}_{(B,G)} = 1.6 \widehat{i} + 6.4 \widehat{j}\\\\{v}_{(B,G)} = \sqrt{1.6^2 + 6.4^2}=6.96 m/s$