Answer:
look at explanation
Explanation:
the actual concentration of the NaOH solution has to be determined experimentally using a process called standardization. To standardize a base solution such as NaOH, an acid whose amount can be determined to a high degree of accuracy (called a primary standard) is needed.
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I can't answer it if I can't see the image.
Answer:
5.10¹¹ N/C
Explanation:
As we have a proton and a neutron, we can consider that they both have the same charge, this is:
e- = e+ = |1,6x10⁻¹⁹ C| , this number is in absolute value
Then, the formula needed to calculate the magnitude of the electric field from a charged particle is:
E= kqQ/r²
Where:
K= Coulomb constant
Q= charge
r = distance between two charges
Then:
E= 8.99x10⁹N/C²*(1.6x10⁻¹⁹C)/(5.3x10⁻¹¹m)²
E=5.12x1011 N/C
It is important that this value is a magnitude, it does not have any sign (positive or negative), for the magnetic field
Answer:
60 g
Explanation:
The formula relating mass (<em>m</em>), heat (<em>q</em>), and temperature change (Δ<em>T</em>) is
<em>q = mC</em>Δ<em>T</em> Divide both sides by <em>C</em>Δ<em>T</em> and switch
<em>m</em> = <em>q</em>/(<em>C</em>Δ<em>T</em>)
<em>q</em> = 1260 J
<em>C</em> = the specific heat capacity of water = 4.184 J·K⁻¹g⁻¹
Δ<em>T</em> = <em>T</em>₂ - <em>T</em>₁ = 313 K – 308 K = 5 K
<em>m</em> = 1260/(4.184 × 5)
<em>m</em> = 1260/21
<em>m</em> = 60 g