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Natali5045456 [20]
3 years ago
13

Which of the following chemical equations depicts a balanced chemical

Chemistry
2 answers:
il63 [147K]3 years ago
6 0
OC. (Third one) is balanced
Margarita [4]3 years ago
4 0
OC option is balanced
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Significant Figures For 7.06 × 10^5 ÷ 5.3 × 10^-2
Kay [80]

Answer:

\boxed{\text{two}}

Explanation:

In multiplication  and division problems, your answer can have no more significant figures than the number with the fewest significant figures.

\dfrac{7.06 \times 10^{5}}{5.3 \times 10^{-2}}= 1.332 075 472 \times 10^{7} (by my calculator)  

There are three significant figures in 7.06 and two in 2.3.

You must round to \boxed{\textbf{two}} significant figures and report the answer as 1.3 × 1.0⁷.

4 0
3 years ago
Arrange the following elements based on their size (atomic radii) from largest to smallest: Ca, Ge, Br, K, Kr
Lady bird [3.3K]
Answer: K, Ca, Ge, Br, Kr
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2 years ago
The Austrian monk and scientist Gregor
Archy [21]

Answer:

Mendel, Inheritance/Heredity

Explanation:

Gregor Mendel (1822-1884) was an Austrian monk and scientist as stated in this question. He is referred to as the FATHER OF GENETICS due to his immense contributions to the principle of inheritance.

Gregor Mendel via his several works conducted on pea plants was able to demonstrate how traits passed down from parents to offsprings in a process called INHERITANCE OR HEREDITY.

8 0
3 years ago
What are the short-term and long -term consequences of climate change ? Draw evidence from research to support your analysis . C
riadik2000 [5.3K]

Answer:

Short term consequences astama and more disease.

Long term- people dieing and need more oxygen so use less paper and straws to not destroy the poor living things

Explanation:

5 0
3 years ago
Read 2 more answers
A 0.334 g sample of an unknown halogen occupies 109 mL at 398 K and 1.41 atm. What is the identity of the halogen?
kolezko [41]
We can use the ideal gas law equation for the above reaction to find the number of moles present 
PV = nRT 
P - pressure - 1.41 atm x 101325 Pa/atm = 142 868 Pa
V - 109 x 10⁻⁶ m³
R - 8.314 Jmol⁻¹K⁻¹
T - 398 K
substituting the values in the equation 
142 868 Pa x 109 x 10⁻⁶ m³ = n x 8.314 Jmol⁻¹K⁻¹ x 398 K
n = 4.70 x 10⁻³ mol
number of moles = mass present / molar mass
molar mass = mass / number of moles  
                   = 0.334 g/ 4.70 x 10⁻³ mol = 71.06 g/mol
halogens exist as diatomic molecules 
Therefore atomic mass - 71.06 / 2 = 35.5 
halogen with 35.5 g/mol is Cl
unknown halogen is Cl
5 0
3 years ago
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