Ask question

Ask question

All categories

2 years ago

9

The temperature of a freezer started at 18şc. After cooling for a few hours, the freezer had a temperature of –12şc. What is the

difference between the new, colder temperature and the original temperature?.

1 answer:

andre [41]2 years ago

8 0

20 minus 2 plus 1 equals negative -2000000

You might be interested in

Yasir wants to determine if there is a relationship between room color and sleep. Based on his research, Yasir makes an educated

Helen [10]

Answer: B. An experiment that directly tests the hypothesis

Explanation:

Yasir didn’t really test his experiment he only ask people for the opinion on which color they like so he forget to actually do the experiment therefore the answer is b.

8 0

2 years ago

The table shows the percentages of hydrocarbons that are found in a sample of crude oil. Hydrocarbons Percentage Paraffins 30 Na

ioda

This will be classified as light on the API scale due to the large percentage of lighter fractions such as paraffins and naphthenes.

4 0

3 years ago

Read 2 more answers

A sample of potassium has an average atomic mass of 39.0983amu. There are three isotopic forms of potassium element in the sampl

igomit [66]

Answer:

Percent Composition of 41K = 6.7302%

Explanation:

The explination is in the image.

7 0

2 years ago

Calculate the density of chloroform

Rina8888 [55]

Answer: The density of chloroform is 1.47 g/mL

Explanation : Given,

Volume = 40.5 mL

Mass of cylinder = 85.16 g

Mass of cylinder and liquid = 145.10 g

First we have to calculate the mass of liquid (chloroform).

Mass of liquid = Mass of cylinder and liquid - Mass of cylinder

Mass of liquid = 145.10 g - 85.6 g

Mass of liquid = 59.5 g

Now we have to calculate the density of liquid (chloroform).

Formula used:

$Density=\frac{Mass}{Volume}$

Now putting g all the given values in this formula, we get:

$Density=\frac{59.5g}{40.5mL}$

$Density=1.47g/mL$

Therefore, the density of chloroform is 1.47 g/mL

5 0

2 years ago

How many neurons does atom in the model shown below have<br> a.2<br> b.9<br> c.10 <br> d.16

const2013 [10]

The atom in the model has 9 neurons.

7 0

2 years ago

Read 2 more answers