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3 years ago

What kind of scientist would study the the first of a car running

Chemistry

1 answer:

iVinArrow [24]3 years ago

7 0

Answer:

A physicist

Explanation:

hope this will help you

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The average American is looking at their phone for 6.25 hours a day. How many hours will the average American spend on their pho

julia-pushkina [17]

Answer:

177253.125hrs

Explanation:

Given parameters:

Number of hours spend per day on phone = 6.25hrs

Unknown:

Average hours pend by an average American if they lived for 77.7yrs

Solution:

Let us find the number of hours an average American spends on their phone per year;

there are 365days in a year

Number of hours = 365 x 6.25 = 2,281.25hrs

Now, if they lived for 77.7yrs;

They will spend = 77.7 x 2,281.25 = 177253.125hrs

8 0

2 years ago

What type of reaction occurs in a hand warmer?<br> Exothermic<br> Endothermic

storchak [24]

Answer:

The reaction is exothermic.

Explanation:

8 0

2 years ago

A gas has an initial volume of 455 mL at 105ºC and a final volume of 235 mL. What is its final temperature in Celsius degrees?

Oksana_A [137]

Hello!

To solve this problem we're going to use the Charles' Law. This Law describes the relationship between Volume and Temperature in an ideal gas. Applying this law we have the following equation:

$\frac{V1}{T1} = \frac{V2}{T2} \\ \\ T2= \frac{V2*T1}{V1}= \frac{235 mL * 105 ^{\circ}C }{455 mL}=54,23 ^{\circ}C$

So, the final temperature is 54,23 °C

Have a nice day!

5 0

3 years ago

Read 2 more answers

Which is true regarding the penetrating power of radiation?

11Alexandr11 [23.1K]

Gamma radiation have the most penetrating power. It can penetrate through human body, aluminum and other metals. It can be stopped by lead. Hence, the radioactive waste are stored in lead container for safety purposes. The beta ray has more penetrating power than the alpha but less than gamma. The beta radiations can be stopped by aluminum. The alpha radiations have least penetrating power and it can be stopped by human hands.

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2 years ago

Phosphorus trichloride gas and chlorine gas react to form phosphorus pentachloride gas: pcl3(g+cl2(g?pcl5(g. a 7.5-l gas vessel

Natasha2012 [34]

25655+6565++65+65+65+56+566+56+556+5+656+56+56+56+56+

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3 years ago