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padilas [110]
2 years ago
5

Craters visible on the moon's surface provide further evidence of

Chemistry
1 answer:
guajiro [1.7K]2 years ago
6 0
The answer is A, Frequent asteroid impacts.
You might be interested in
The factor that has the biggest effect on the climate of a region is generally _____.
NemiM [27]

Answer:

C

Explanation:

Closer to equator means temp high more humidity and more hot

Further form equator cold temp less sun more cold

3 0
2 years ago
You have 4.5 x 10^24 particles of C3H8. How many grams are present?
Citrus2011 [14]

Answer:

33 g.

Explanation:

Hello there!

In this case, for these particle-mole-mass relationships problems, it is necessary for us to recall the following equivalence statement, based off the molar mass of the involved compound, C3H8, one mole of particles and the Avogadro's number:

1mol=44.11g=6.022x10^{23}molecules

In such a way, we can set up the following expression for the calculation of the mass in the given particles of propane:

4.5x10^{23}molecules*\frac{1mol}{6.022x10^{23}molecules} *\frac{44.11g}{1mol}\\\\33g

Best regards!

3 0
3 years ago
How many moles are in 1.2x10^3 grams of ammonia, NH3?
KonstantinChe [14]
I don't have a calculator with me right now, but that mass would be 1200 grams. Divide the given amount of grams by the molar mass of NH3, which is 17.031g/mol. (Nitrogen + 3(hydrogen)). Again, sorry I didn't have a calculator. But all you would need to do is divide 1200 by 17.031. If you need to use sig figs, your answer should have 2 because the 1.2 x 10^3 limits your amount of sig figs.
6 0
3 years ago
Aqueous solutions of ammonium oxalate and lithium acetate react.
Anarel [89]

Answer:

The reaction is a double displacement reaction

Explanation:

Let us consider the reaction equation of the reaction between ammonium oxalate and lithium acetate.

(NH4)2C2O4(aq) +2 CH3COOLi(aq) -------> 2NH4CH3CO2(aq) + Li2C2O4(s)

This is a displacement reaction. A double displacement reaction is a type of reaction in which two reactants exchange their ions to form two new compounds. Double displacement reactions usually lead to the formation of a solid product which is also called a precipitate.

The general form of a Double displacement reaction is of the format:

AB + CD → AD + CB

Where A,B,C and D represents different ions respectively.

A double displacement reaction can also be referred to as salt metathesis reaction, double replacement reaction, exchange reaction, or a double decomposition reaction, although the latter term is more strictly used when one or more of the reactants does not dissolve in the solvent.

3 0
3 years ago
How many liters of 1.5 M HCl solution would react completely with 2.5 moles Ca(OH)2? (2 points)
mylen [45]
Here’s the math for your answer, which is 3.3 L HCl

6 0
3 years ago
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