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Arisa [49]
3 years ago
15

Select all the correct answers.

Chemistry
1 answer:
Lelu [443]3 years ago
3 0

Answer: A. The farther a planet is from the Sun, the longer its orbital period is, and D. Planets with greater mass tend to have more moons.

Explanation: trust

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Earth has seasons because ? A . It rotates on its axis B. The distance between earth and the sun changes C. It’s axis it tilted
Nataly_w [17]
Its c 
hope this helps

8 0
3 years ago
If you have 3.50 moles of hydrogen and 5.00 moles of nitrogen to produce ammonia, which element is the reactant in excess? 3H2 +
kicyunya [14]

Answer:

nitrogen

Explanation:

The stoichiometry of the reaction says that H_{2} and  N_{2} react 3:1 to form 2 moles of  NH_{3}, so, if you have 3,5 moles of H, which is equal to 1,75 moles of  H_{2}, and 5 moles of N, which are equal to 2,5 moles of  n_{2}. only\frac{1,75 moles of H2}{3}=0.583 moles of  N_{2}, will react, leaving <em>1.917 moles of </em> N_{2} <em>unreacted</em>, and forming 0.583*2=1.166 moles of  NH_{3}

3 0
3 years ago
(9443+45−9.9) (9443+45−9.9) ×8.4× 10 6
ozzi
Booooooommmm!.................

6 0
4 years ago
How is beryllium similar to calcium?<br>​
Molodets [167]

Answer:

The second column on the periodic table of the chemical elements is collectively called the alkaline earth metal group: beryllium, magnesium, calcium, strontium, barium, and radium. Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties.

Explanation:

8 0
3 years ago
Find the density of a gas at STP if it’s molar mass is 112g/mol
AleksandrR [38]

Answer:

D= 5 g/L

Explanation:

M= D x Vm

M is the molar mass = 112g/mol

D is the density

Vm is the molar volume whuch is 22.4L at STP

now substitute;

112 = D x 22.4

D= 112\22.4

D= 5 g/L

5 0
3 years ago
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