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3 years ago

What is the term for the study of matter and the changes it undergoes

Chemistry

2 answers:

WARRIOR [948]3 years ago

7 0

Answer:

Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation

Explanation:

Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation Assignment: 06.05 Data Observation

mafiozo [28]3 years ago

6 0

Answer:Chemistry

Explanation:

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How many liters of 4M solution can be made using 100 grams of lithium bromide

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You can make 0.288 L of 4M solution using 100g of lithium bromide

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3 years ago

Given that kb for c6h5nh2 is 1.7 × 10-9 at 25 °c, what is the value of ka for c6h5nh3 at 25 °c?

lina2011 [118]

Answer: $k_a$ for $C_6H_5NH_3^+$ at 25°C is $0.588\times 10^{-4}$

Explanation: We are given $k_b$ of $C_6H_5NH_2$ at 25°C which is $1.7\times 10^{-9}$

To calculate the $k_a$ of $C_6H_5NH_3^+$ , we use the formula:

$k_w=k_a\times k_b$

$k_w\text{ at }25^o=1\times 10^{-14}$

Putting values in above equation, we get:

$1\times 10^{-14}=k_a\times (1.7\times 10^{-9})\\k_a=0.588\times 10^{-5}$

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3 years ago

An organism that makes or creates their own food?

Sedaia [141]

I think producer

option is A

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A cat climbs a tree. What chemical process is taking place to

Dafna11 [192]

Answer:

When i cat climbs a tree it is using energy that was stored away. When you eat you are storing that energy in the food. when you cimb a tree you are burning calorius from that meal.

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3 years ago

How many moles of arsenic atoms are in 3.2 x 1021 atoms of arsenic?

GenaCL600 [577]

To convert atoms to moles, we need Avogadro's number (1 mol= 6.02 x 10²³ atoms)

$3.2 x10^{21} atoms (\frac{1 mol Arsenic}{6.02x10^{23} atoms} )= 0.00532 mol Arsenic$

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3 years ago