3 years ago

HELP!!! WILL MARK BRAINLIEST!!! picture attached below

Chemistry

1 answer:

Hoochie [10]3 years ago

5 0

Answer:

0.2 cm

Explanation:

looking at the ruler, you can see that the diameter is 0.4 cm. to get the radius, just divide by two, which gets 0.2 cm as the radius

You might be interested in

What will be the new volume if 125 mL of He gas at 100 degree Celsius and .979 atm is cooled to 26 degree Celsius and the pressu

ycow [4]

Use Boyle's Law of Pressure: P1 x V1 = P2 x V2. Givens: P1=0.9 atm V1= 4 P2= 0.9 atm Find: V2 Equation: 0.9 atm x 4 x 4 L = 0.20 atm x V2Solve: 36 atmL= 0.20 atm x V2 18 : = V2 Short answer: The new volume is 104 ml.

6 0

3 years ago

5) Calculate the molality of 0.210 mol of KBr dissolved in 0.075kg pure<br> water?

Margaret [11]

Answer:

$\boxed {\boxed {\sf 2.8 \ m }}$

Explanation:

The formula for molality is:

$m=\frac{moles \ of \ solute}{kg \ of \ solvent}$

There are 0.210 moles of KBr and 0.075 kilograms of pure water.

$moles= 0.210 \ mol \\kilograms = 0.075 \ kg$

Substitute the values into the formula.

$m= \frac{ 0.210 \ mol }{0.075 \ kg}$

Divide.

$m= 2.8 \ mol/kg= 2.8 \ m$

The molality is <u>2.8 moles per kilogram</u>

5 0

3 years ago

Is a CAS number a physical or chemical property

katrin [286]

Chemical

Hope that helps

5 0

3 years ago

True/False Indicate whether the sentence or statement is true or false. The number 1 234 000 in scientific notation is equal to

Shalnov [3]

False bc 1.234 x 10^5 is 123400

8 0

3 years ago

Please help

docker41 [41]

i gotchuuu i’m checking my answer now

7 0

3 years ago