Answer:
C
Explanation:
because warmer air lies above the cooler air
Answer:
171.8°C
Explanation:
V1= 1780ml, V2= 2.55L= 2550L, T1= 273+37.5= 310.5
T2=?
Applying
V1/T1 = V2/T2
1780/310.5 = 2550/T2
T2= 444.8K -273 = 171.8°C
Answer:
0.6139M
Explanation:
A 3.50% by mass of NaCl means there are 3,50g of NaCl in 100g of solution. To find molarity we need to convert the mass of NaCl to moles and mass of solution to liters as follows:
<em>Moles NaCl -molar mass: 58.44g/mol-:</em>
3.50g NaCl * (1mol / 58.44g) = 0.05989 moles of NaCl
<em>Liters solution:</em>
100g solution * (1mL / 1.025g) * (1L / 1000mL) = 0.09756L of solution
<em>Molarity -Ratio of moles and liters-:</em>
0.05989 moles of NaCl / 0.09756L of solution =
<h3>0.6139M</h3>
Oxygen and bromine are both nonmetals, and most nonmetals tend to gain electrons to gain stability.
Only bromine has seven valence electrons - oxygen has six.
Only bromine is a halogen (group 7)
They are both highly reactive. Only the noble gases (group 8) are unreactive elements.