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2 years ago

You have 5 cars and you double that amount.How much cars do you have.

Chemistry

1 answer:

Nostrana [21]2 years ago

5 0

Answer:

10 cars

Explanation:

the double of 5 is 10

5+5=10

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- How many grams of nitrogen (N2) are needed to react with 435.2 g of oxygen (02) in the following equation?

Llana [10]

Explanation:

I think the answer is this for a better check mass- mass ratio in stoichiometry lesson

5 0

2 years ago

A gas of unknown identity diffuses at a rate of 155 mL/s in a diffusion apparatus in which carbon dioxide diffuses at the rate o

Ostrovityanka [42]

Answer:

19.07 g mol^-1

Explanation:

The computation of the molecular mass of the unknown gas is shown below:

As we know that

$\frac{Diffusion\ rate\ of unknown\ gas }{CO_{2}\ diffusion\ rate} = \frac{\sqrt{CO_{2\ molar\ mass}} }{\sqrt{Unknown\ gas\ molercular\ mass } }$

where,

Diffusion rate of unknown gas = 155 mL/s

CO_2 diffusion rate = 102 mL/s

CO_2 molar mass = 44 g mol^-1

Unknown gas molercualr mass = M_unknown

Now placing these values to the above formula

$\frac{155mL/s}{102mL/s} = \frac{\sqrt{44 g mol^{-1}} }{\sqrt{M_{unknown}} } \\\\ 1.519 = \frac{\sqrt{44 g mol^{-1}} }{\sqrt{M_{unknown}} } \\\\ {\sqrt{M_{unknown}} } = \frac{\sqrt{44 g mol^{-1}}}{1.519} \\\\ {\sqrt{M_{unknown}} } = \frac{44 g mol^{-1}}{(1.519)^{2}}$

After solving this, the molecular mass of the unknown gas is

= 19.07 g mol^-1

4 0

3 years ago

Controls are defined as ____

wariber [46]

Answer:

The second one is the answer

4 0

3 years ago

Read 2 more answers

The Center for Disease Control publishes articles explaining the causes of seasonal West Nile virus. Research proves mosquitoes

Goshia [24]

Answer:

The correct answer is - Mosquitoes transmit the virus as parasites which feed on the blood of host organisms and inject the virus during feeding.

Explanation:

According to the CDC, the seasonal West Nile virus is caused by the mosquitoes of freshwater transmit this disease to humans and others. These mosquitoes are feed on the birds and pick these viruses.

These viruses stick on mosquitoes and when they feed on the blood of humans they transmit these viruses by injecting viruses into the blood of humans.

4 0

2 years ago

Explain how physical evidence is analyzed and presented in the courtroom by the forensic scientist. And HOW admissibility of evi

valentina_108 [34]

Answer:

known as reactions and metaphorically breaking the witness into telling the truth. I hope this helped:)

Explanation:

7 0

3 years ago