Answer:
D. B, C, A
Explanation:
A. For object A, given the following data;
Mass = 2kg
Net force = 1N
To find the acceleration;
Acceleration = net force/mass
Acceleration = 1/2
<em>Acceleration = 0.5m/s²</em>
B. For object B, given the following data;
Mass = 8kg
Net force = 10N
To find the acceleration;
Acceleration = net force/mass
Acceleration = 10/8
<em>Acceleration = 1.25m/s²</em>
C. For object C, given the following data;
Mass = 7kg
Net force = 7N
To find the acceleration;
Acceleration = net force/mass
Acceleration = 7/7
<em>Acceleration = 1m/s²</em>
Therefore, placing the objects in decreasing order, according to the magnitude of the acceleration they are experiencing is B, C, A
Iron(II) oxide react with nitric acid to produce iron(III) nitrate, nitrogen dioxide and water. Chemical reaction<span>. Balancing </span>chemical<span> equations.</span>
Answer:
0.574moles
Explanation:
Using the general gas equation;
PV = nRT
Where;
P = pressure (atm)
V = volume (Litres)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (Kelvin)
According to the information provided in the question;
- Volume (V) = 12400mL = 12400/1000 = 12.4L
- Pressure (P) = 890mmHg = 890/760 = 1.17atm
- Temperature (T) = 35°C = 35 + 273 = 308K
Hence, using PV = nRT
n = PV/RT
n = 1.17 × 12.4 ÷ 0.0821 × 308
n = 14.508 ÷ 25.287
n = 0.574moles
Therefore, the number of moles of argon gas in the cylinder is 0.574moles
Answer:
the empirical (lowest raios) is
C2H4Cl
Explanation:
A compound is known to consist solely of carbon, hydrogen, and chlorine. Through elemental analysis, it was determined that the compound is composed of 24.27% carbon.
What is the empirical formula of this compound?
the compound has ONLY C, H, and Cl
the % Cl = 100% - 24.27% -4.03% = 71.7%
in 100 gm, there are 71.7 gm Cl, 24.27 gm C, and 4.03 gm H
the number of moles are Cl=71.7/70.91 =1.01= ~ 1
C = 24.27/12.0 = 2.02 =~ 2
H = 403/1.01 = 3.97 =~ 4
so the empirical (lowest raios) is
C2H4Cl