3 years ago

Why must all deadlier pesticides be developed?

1 answer:

8 0

Due to the other pesticides have outgrown their strength on today’s insects. All must be accompanied by mass paperwork for safety.

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Because of bronze'z high _________ , ancient Egyptians were able to use it to make mirrors

postnew [5]

Shiny and soft mental

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3 years ago

Sodium carbonate (Na2CO3) reacts with acetic acid (CH3COOH) to form sodium acetate (NaCH3COO), carbon dioxide (CO2), and water (

Evgen [1.6K]

Answer:

=3,723.3 J=3.72 but if it has the option of -3.72 kJ then use that

Explanation:

Use the formula q=m×Cp×delta T

m=1.500 kg=1,500 g

Co=2.52 J/g·k

delta T=0.985k

q=(1,500g)(2.52 J/g·k)(0.985k)

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3 years ago

What is the charge of an electron<br> A. -1<br> B. 0<br> C. +1<br> D. +2

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Answer:

Explanation:

I believe it is negative 1.

6 0

3 years ago

PLEASE HELP!

Anon25 [30]

Answer:

C. Mole

Explanation:

Chemical formula deals with mole number

4 0

2 years ago

How many moles of ca(oh)2 are in 25ml of 1.5 M solution?

Klio2033 [76]

Molar concentration is

$C=\frac{\eta}{V}$

$[V]=Liters$

$[\eta]=mol$

$\eta=C*V$

$V=25~mL=0.025~L$

$\eta=1.5*0.025$

$\boxed{\boxed{\eta=0.0375~moles}}$

6 0

3 years ago