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taurus [48]
3 years ago
12

Need helped for this

Chemistry
1 answer:
yarga [219]3 years ago
3 0
Molar mass of PH3: 34.0 g/mol
17.0g PH3 x 1 mol PH3 / 34.0 g = 0.5 mol PH3
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If there is a name/surname you can't make out due to a speaker's manner of speech, what are you supposed to do?
____ [38]

We can call a person by the word gentleman and Sir or from his/her real name.

If there is a name/surname you can't make out due to a speaker's manner of speech then I will call him gentleman or Sir or I will ask him his real name. Gentleman is a word that is used for noble person and Sir word is also used in order to give someone respect.

Call a person with his real name is also comes under the manner of speech so we can conclude that we can call a person by the word gentleman and Sir or from his/her real name.

Learn more about manner of speech here:

Learn more: brainly.com/question/26023566

6 0
3 years ago
SpongeBob & Friends and the Scientific Method
yarga [219]

Answer:

1. Which people are in the control group? The people who received the mint without the secret ingredient

(Group B) would be the control group.

2. What is the independent variable? Secret ingredient in the breath mint

3. What is the dependent variable? Amount of breath odor (or bad breath)

4. What should Mr. Krabs’ conclusion be? The breath mint with the secret ingredient appears to reduce the

amount of breath odor more than half the time, but it is not 100% effective.

5. Why do you think 10 people in group B reported fresher breath? This may be due to the placebo effect.

6 0
3 years ago
Why is potassium less reactive than silver
Reika [66]
Because potassium is a gas that can evolve
3 0
3 years ago
What properties can you observe about the Sun?
nexus9112 [7]
Energy- The ability to do work or cause a change.
Gravity- A force that pulls objects toward each other.
Light- A kind of energy that you can see.
Sun- The star that is near Earth.
Temperature- A measure of how hot and cold something is.
Transform- To change.
5 0
3 years ago
Read 2 more answers
Sodium chloride is produced from its elements
Kisachek [45]

Answer:

                     Mass of Sodium  =  574.75 g

                     Mass of Chlorine  =  886.25 g

Explanation:

                   The  balance chemical equation for the synthesis of NaCl is,

                                        2 Na + Cl₂ → 2 NaCl

Step 1: <u>Find out moles of each reactant required,</u>

According to balance chemical equation,

                 2 moles of NaCl is produced by  =  2 moles of Na

So,

         25 moles of NaCl will be produced by  =  X moles of Na

Solving for X,

                     X  =  25 mol × 2 mol /  2 mol

                     X  =  25 moles of Na

Similarly for Cl₂,

According to balance chemical equation,

                 2 moles of NaCl is produced by  =  1 mole of Cl₂

So,

         25 moles of NaCl will be produced by  =  X moles of Cl₂

Solving for X,

                     X  =  25 mol × 1 mol /  2 mol

                     X  =  12.5 moles of Cl₂

Step 2: <u>Convert each moles to mass as;</u>

Mass  =  Moles × Atomic Mass

For Na,

Mass  =  25 mol × 22.99 g/mol

Mass  =  574.75 g

For Cl₂,

Mass  =  12.5 mol × 70.90 g/mol

Mass  =  886.25 g

6 0
3 years ago
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