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3 years ago

Use the drop-down menus to answer the questions about fronts and weather maps.

Chemistry

2 answers:

Jlenok [28]3 years ago

4 0

Answer:

1) Large temperature and air pressure decrease.

2) Temperature and air pressure increase.

Alenkasestr [34]3 years ago

3 0

Answer:

Large temperature and air pressure decrease.

Temperature and air pressure increase.

Explanation:

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If we know this is a second-order reaction, what is the rate law?

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Answer:

The rate is a mathematical relationship obtained by comparing reaction rate with reactant concentrations.

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3 years ago

How many grams of nacl are in 250 g of a 15.0% (by weight) solution?

Gelneren [198K]

Answer: -

37.5 g of NaCl are in 250 g of a 15.0% (by weight) solution.

Explanation: -

Total mass = 250 g

Percentage of NaCl = 15.0 %

= $\frac{Number of grams of NaCl present}{total mass}$

Thus $\frac{15}{100}$ = $\frac{Number of grams of NaCl present}{250g}$

Number of grams of NaCl present = $\frac{15 x 250g}{100}$

= 37.5 g

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son4ous [18]

Answer:

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explanation:

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3 years ago