Answer:
Explanation:
Muscles in a kangaroo’s legs work because of the cells that make up the muscle. Which component of cell theory does this best illustrate?
All living things are made of cells.
Cells are the basic unit of structure and function of all living things.
All cells come from other cells.
Cells are generated from nonliving materials.
Cells are the basic unit of structure and function of all living things.
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Answer:
CuO + H₂SO₄ ⟶ CuSO₄ + H₂O
Explanation:
The most likely reaction is a <em>double displacement</em>, in which Cu and H trade partners.
This gives
CuO + H₂SO₄ ⟶ CuSO₄ + H₂O
The equation is already balanced, so no further work is necessary.
Answer:
C
Explanation:
According to the mole ratio, using 2NH3 will give you 3H2. Which means in order to find the moles of H2 you would only need to divide 2 and multiply 3 to get the amount of moles of H2 produced.
Generally chemists measure substance in moles because it is very difficult to count the number of molecules<span />
Answer:
λ = 1.1×10⁸ m
Explanation:
Given data:
Frequency of wave = 2.7 Hz
Wavelength of wave = ?
Solution:
Formula:
Speed of wave = frequency × wavelength
Speed of wave = 3×10⁸ m/s
now we will put the values in formula.
3×10⁸ m/s = 2.7 s⁻¹ × λ
λ = 3×10⁸ m/s /2.7 s⁻¹
λ = 1.1×10⁸ m
