First you have to find the number of moles , then you have to apply stoichometry to find the number of moles of H2 gas , after that you can determine its mass.
[ H₃O⁺] = 10 ^- pH
[ H₃O⁺] = 10 ^ (- 5.75 )
[H₃O⁺] = 1.778x10⁻⁶ M
Kw = [ H₃O⁺] x [ OH⁻]
1x10⁻¹⁴ = 1.778x10⁻⁶ x [OH⁻]
[OH⁻] = 1x10⁻¹⁴ / 1.778x10⁻⁶
[OH⁻] = 5.62x10⁻⁹ M
hope this helps!
Answer:
Explanation:
A. White blood cells have many lysosomes because they need to produce a lot of glucose and oxygen.
Lysosomes are found in all animal cells, but are most numerous in disease-fighting cells, such as white blood cells. This is because white blood cells must digest more material than most other types of cells in their quest to battle bacteria, viruses, and other foreign intruders.
Answer:
Amount of heat required = 153.62 J
Explanation:
Given:
Mass = 163.45 g
∆Hvap = 43.3 kJ/mol
Molar mass C₂H₅OH = 46.07 g/mol
Find:
Amount of heat required
Computation:
Amount of heat required = Number of moles x Molar mass C₂H₅OH
Amount of heat required = [163.45/46.07][43.3]
Amount of heat required = 153.62 J
The planet that would have a diameter of approximately 12 cm is Saturn.
<h3>What is a scale model?</h3>
A scale model is a model which is used to represent another object using a given scale.
Scale models can be used to make small object bigger or larger objects smaller.
Considering the scale model of the planets where 1 centimeter (cm) is equal to 10,000 kilometers (km);
1 centimeter = 10,000 kilometers
12 centimeter = 1.2 × 10⁵ kilometers
The planet with a diameter of approximately 1.2 × 10⁵ kilometers is Saturn.
In conclusion, scale models are used to model objects.
Learn more about scale models at: brainly.com/question/17595659
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